image imagewidth (px) 53 760 ⌀ | question stringlengths 14 862 | choices listlengths 2 5 | answer int8 0 4 | hint stringlengths 0 1.85k | task stringclasses 3
values | grade stringclasses 12
values | subject stringclasses 3
values | topic stringclasses 26
values | category stringclasses 119
values | skill stringclasses 321
values | lecture stringclasses 256
values | solution stringlengths 0 2.72k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Which of these states is farthest east? | [
"Indiana",
"Utah",
"Louisiana",
"North Dakota"
] | 0 | closed choice | grade4 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Indiana is farthest east. | ||
What can Kaylee and Jeffrey trade to each get what they want? | [
"Jeffrey can trade his almonds for Kaylee's tomatoes.",
"Kaylee can trade her tomatoes for Jeffrey's sandwich.",
"Jeffrey can trade his broccoli for Kaylee's oranges.",
"Kaylee can trade her tomatoes for Jeffrey's broccoli."
] | 3 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Kaylee and Jeffrey open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Kaylee wante... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Kaylee wanted broccoli in her lunch and Jeffrey was hoping for tomatoes. Look at the labeled part of the images.
Kaylee has tomatoes. Jeffrey has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | ||
What type of rock is diorite? | [
"igneous",
"sedimentary"
] | 0 | Diorite is a type of rock. When melted rock cools below the earth's surface, it can form diorite. Diorite is usually made of large mineral grains. | closed choice | grade3 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when a rock is chang... | Diorite is an igneous rock. Like other igneous rocks, it forms when melted rock cools and hardens.
Melted rock is a hot, thick liquid. As melted rock cools, solid mineral grains begin to form. When the melted rock becomes solid, it forms igneous rock. The word igneous comes from the Latin word ignis, which means fire. | |
Which of the following could Rosa and Suzie's test show? | [
"if the concrete from each batch took the same amount of time to dry",
"if a new batch of concrete was firm enough to use"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Which animal's legs are also adapted for wading? | [
"great egret",
"African fish eagle"
] | 0 | Shoebills live near marshes and lakes in Africa. They eat fish, frogs, and small reptiles that live in shallow water. Shoebills hunt their prey by walking through water, or wading.
The 's legs are adapted for wading. They are lightweight and keep the bird's body above the water.
Figure: shoebill. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the shoebill.
Long legs help the shoebill keep its body above the surface of the water while wading. Thin legs are easier to move through the water.
Now look at each animal. Figure out which animal has a similar adaptation.
The great egret has long, thin legs. Its legs are adapted for wading.
The... | |
Not supported with pagination yet | What is the volume of a water balloon? | [
"585 milliliters",
"585 liters"
] | 0 | Select the better estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.... | The better estimate for the volume of a water balloon is 585 milliliters.
585 liters is too much. |
Select the amphibian below. | [
"piranha",
"blue-footed booby",
"western toad",
"woodpecker"
] | 2 | Amphibians have moist skin and begin their lives in water.
Amphibians are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
A poison dart frog is an example of an amphibian. | closed choice | grade4 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals. | A western toad is an amphibian. It has moist skin and begins its life in water.
Toads do not have teeth! They swallow their food whole.
A woodpecker is a bird. It has feathers, two wings, and a beak.
Woodpeckers have strong beaks. They use their beaks to drill into wood to hunt for food.
A piranha is a fish. It lives u... | |
Is tillite a mineral or a rock? | [
"mineral",
"rock"
] | 1 | Tillite has the following properties:
no fixed crystal structure
made up of coarse and fine sediment grains
solid
found in nature
not made by living things
not a pure substance | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | The properties of tillite match the properties of a rock. So, tillite is a rock. | |
As Jill pulls on the leash, what is the direction of the opposing force? | [
"forward",
"backward"
] | 0 | The text below describes a pair of opposing forces. Opposing forces act on an object in opposite directions. Read the text. Then answer the question below.
Jill and her dog, Sparky, are stopped while on a walk. Sparky sees a squirrel and tugs on his leash. Think about two of the forces that act on the leash:
Jill pulls... | closed choice | grade3 | natural science | physics | Force and motion | How do balanced and unbalanced forces affect motion? | A force is a push or a pull that acts on an object. Each force acts on an object in a certain direction. If two forces act on an object in opposite directions, they are called opposing forces. | Find the direction Jill pulls on the leash.
Jill and her dog, Sparky, are stopped while on a walk. Sparky sees a squirrel and tugs on his leash. Think about two of the forces that act on the leash:
Jill pulls backward.
Sparky pulls forward.
The text tells you that Jill pulls backward. The opposite direction is forward.... | |
What is the name of the colony shown? | [
"Iowa",
"North Carolina",
"Maryland",
"Washington, D.C."
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Maryland. | |||
What is the capital of Missouri? | [
"Jefferson City",
"Saint Paul",
"Saint Louis",
"Kansas City"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | |||
What are the fingers of a banana plant? | [
"the bananas",
"the stems"
] | 0 | Read the passage about bananas.
Bananas grow on banana plants in large bunches. Each group of bananas in a bunch is called a hand, and each banana is a finger.
Banana plants may look like trees, but they're not. They don't have trunks. Instead, they have thick stems made of leaves. Banana plants are chopped down once a... | closed choice | grade2 | language science | reading-comprehension | Independent reading comprehension | Read and understand informational passages | Look at the passage. It tells you what the fingers of a banana plant are.
Bananas grow on banana plants in large bunches. Each group of bananas in a bunch is called a hand, and each banana is a finger. | ||
Not supported with pagination yet | Does this passage describe the weather or the climate?
Morning clouds usually clear up by noon where Judith lives. | [
"weather",
"climate"
] | 1 | closed choice | grade5 | natural science | earth-science | Weather and climate | What's the difference between weather and climate? | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the text carefully.
Morning clouds usually clear up by noon where Judith lives.
This passage tells you about the usual pattern of clouds where Judith lives. It does not describe what the weather is like on a particular day. So, this passage describes the climate. | |
Not supported with pagination yet | What does the metaphor in this text suggest?
Trudy felt a roller coaster of emotions when she heard the news. | [
"Trudy had varied feelings.",
"Trudy felt delighted about the news."
] | 0 | closed choice | grade8 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A metaphor compares two things that are not actually alike without using like or as.
The snow formed a blanket over the town. | The text uses a metaphor, comparing two things that are not actually alike without using like or as.
The metaphor Trudy felt a roller coaster of emotions suggests that Trudy had varied feelings. A roller coaster has a dramatic mix of ups and downs, and so do Trudy's feelings. | |
Not supported with pagination yet | Using only these supplies, which question can Javier investigate with an experiment? | [
"Do rubber balloons stick to a wooden door or a metal door longer after being rubbed on his hair?",
"Do rubber balloons stick to a cotton blanket or a wooden door longer after being rubbed on his hair?",
"Do rubber balloons or foil balloons stick to the wooden door longer after being rubbed on his hair?"
] | 1 | Javier went to a magic show. The magician rubbed a balloon on her hair and then held the balloon against a wall. When the magician released the balloon, Javier was amazed to see that it stuck to the wall! He wonders what factors affect how well balloons stick to different surfaces. So, he decides to design an experimen... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
What is the capital of Texas? | [
"Austin",
"Atlanta",
"Houston",
"Dallas"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Austin is the capital of Texas. | |||
Which solution has a higher concentration of pink particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | 1 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... | |
Which of these cities is marked on the map? | [
"San Francisco",
"Portland",
"Salt Lake City",
"San Diego"
] | 3 | closed choice | grade5 | social science | geography | Cities | Cities of the West | The city is San Diego, California. Portland, Salt Lake City, and San Francisco are marked with gray circles on the map below. | |||
Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: Taj Mahal.
The Taj Mahal receives over two million visitors each year. A large group of tourists got soaked during a rainstorm there last week.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade5 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
The Taj Mahal receives over two million visitors each year. A large group of tourists got soaked during a rainstorm there last week.
The underlined part of the passage tells you about a rainstorm that happened at the Taj Mahal last week. This passage describes the atmosphere at a certain pla... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
I've heard that fast food can lead to health problems, but I don't believe it. My grandpa ate fast food every day of his adult life, and he lived to be ninety-one. | [
"appeal to nature: the assumption that natural things are always good",
"slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences",
"hasty generalization: a broad claim based on too few observations"
] | 2 | closed choice | grade10 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that fast food must not lead to health problems because the speaker's grandfather ate fast food every day and lived to ninety-one. However, one person's experience doesn't disprove a general pattern. This illustrates a type of logical fallacy known as a hasty generalization. | |
Which country is highlighted? | [
"Kiribati",
"Tuvalu",
"Papua New Guinea",
"Nauru"
] | 0 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Kiribati. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
Michelle and Raymond had met before through mutual friends, but they had never been alone together until their first date. | [
"oxymoron",
"euphemism"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses an oxymoron, a joining of two seemingly contradictory terms.
Alone together is a contradiction, because being alone means by yourself, but together means with someone else. | |
What is the capital of Connecticut? | [
"Boston",
"Hartford",
"New Haven",
"Bridgeport"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Hartford is the capital of Connecticut. | |||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
spiral - such | [
"slice",
"stranger"
] | 1 | closed choice | grade7 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since stranger is between the guide words spiral - such, it would be found on that page. | |
What happened after the Starving Time? | [
"The Virginia Company gave up Jamestown to Spanish explorers.",
"The Virginia Company only sent women and children to Jamestown.",
"The Virginia Company stopped sending colonists to Jamestown.",
"The Virginia Company started sending more colonists to Jamestown."
] | 3 | During the Starving Time in 1609, many of the first Jamestown settlers died. The timeline below shows events in Jamestown after the Starving Time. Look at the timeline. Then answer the question below. | closed choice | grade4 | social science | us-history | English colonies in North America | Jamestown: growth of a colony | Look at the timeline.
The Starving Time was between 1609 and 1610. The timeline shows that many ships arrived in Jamestown during 1610 and 1611. Those ships arrived because the Virginia Company started sending more colonists to Jamestown. Some of the new colonists were women and children, but most were men. | ||
Complete the text to describe the diagram.
Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium. | [
"to the left than to the right",
"to the right than to the left"
] | 1 | The diagram below shows a solution with one solute. Each solute particle is represented by a green ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.
The diagram shows how the solution can change over time ... | closed choice | grade6 | natural science | chemistry | Solutions | Diffusion across membranes | In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion.
A... | Look at the diagram again. It shows you how the solution changed during the process of diffusion.
Before the solute particles reached equilibrium, there were 6 solute particles on the left side of the membrane and 4 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... | |
Which material is this towel made of? | [
"porcelain",
"cotton"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the towel.
The towel is made of cotton.
Towels are usually made of a looped cotton fabric called terry cloth. Terry cloth towels can absorb a lot of water. | ||
Not supported with pagination yet | How long is a passenger airplane? | [
"200 miles",
"200 inches",
"200 yards",
"200 feet"
] | 3 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of a passenger airplane is 200 feet.
200 inches is too short. 200 yards and 200 miles are too long. |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"sample A",
"neither; the samples have the same temperature"
] | 0 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B mus... | |
Not supported with pagination yet | Which orange has a higher temperature? | [
"the orange with more thermal energy",
"the orange with less thermal energy"
] | 0 | Two oranges are identical except for their thermal energies. | closed choice | grade6 | natural science | physics | Thermal energy | How are temperature and mass related to thermal energy? | Matter is made of tiny particles called atoms. Atoms are always moving.
The energy of moving atoms is called thermal energy. The total amount of thermal energy in matter depends on three things: the type of matter, the amount of matter, and how fast the atoms are moving.
Temperature measures how hot or cold matter is. ... | The two oranges are made of the same material and have the same mass. So, the orange with more thermal energy has a higher temperature. |
Not supported with pagination yet | Is the following trait inherited or acquired?
Haley is good at knitting hats. | [
"acquired",
"inherited"
] | 0 | Hint: People who can knit had to learn how to do it. | closed choice | grade4 | natural science | biology | Traits and heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | People are not born knowing how to knit. Instead, many people learn how to knit. Knitting well takes practice. So, knitting well is an acquired trait. |
Not supported with pagination yet | Which figure of speech is used in this text?
I've heard that Sidney & Co. is downsizing, so I'm happy to see that their store in downtown Greenville will remain open for now. | [
"euphemism",
"hyperbole"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Downsizing is an indirect way of saying that the company is planning on firing employees, closing shops or branches, and/or reducing its budget. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample B",
"sample A"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, but the particles in sample B have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sampl... | |
Not supported with pagination yet | Select the living thing. | [
"hockey puck",
"cane toad"
] | 1 | closed choice | grade3 | natural science | biology | Classification | Identify living and nonliving things | All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. Living things use this energy to grow and change. All living things grow and change during their lives.
All living things sense changes in the world around them. Living things might sense ... | A hockey puck is not a living thing.
Hockey pucks do not have all of the traits of living things. They do not grow or respond to the world around them. They do not need food or water.
A cane toad is a living thing.
Cane toads grow and respond to the world around them. They need food and water. | |
Not supported with pagination yet | What information supports the conclusion that Megan inherited this trait? | [
"Megan and her father both have dark hair.",
"Megan's parents have dark skin. They passed down this trait to Megan."
] | 1 | Read the description of a trait.
Megan has dark skin. | closed choice | grade3 | natural science | biology | Heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | Using only these supplies, which question can Joey investigate with an experiment? | [
"Does a certain kind of tomato plant grow taller when planted in a clay pot or in a plastic pot?",
"Which of the three types of tomato seeds sprouts the fastest?",
"Which type of soil will cause a certain kind of tomato plant to grow the most fruit?"
] | 1 | Joey and his classmates are growing tomato plants in the school garden. He wonders what factors affect how tomato plants grow. So, he decides to design an experiment. He has the following supplies available:
three different types of tomato seeds
one bag of potting soil
five identical clay pots
water | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Select the organism in the same genus as the American white pelican. | [
"Ardea alba",
"Pelecanus rufescens",
"Bubo scandiacus"
] | 1 | This organism is an American white pelican. Its scientific name is Pelecanus erythrorhynchos. | closed choice | grade6 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | An American white pelican's scientific name is Pelecanus erythrorhynchos. The first word of its scientific name is Pelecanus.
Ardea alba is in the genus Ardea. The first word of its scientific name is Ardea. So, Ardea alba and Pelecanus erythrorhynchos are not in the same genus.
Pelecanus rufescens is in the genus Pele... | |
Not supported with pagination yet | Based on this information, what is Toffee's phenotype for the body hair trait? | [
"a hairy body",
"a hairless body"
] | 1 | In a group of deer mice, some individuals have a hairy body and others have a hairless body. In this group, the gene for the body hair trait has two alleles. The allele for a hairy body (B) is dominant over the allele for a hairless body (b).
Toffee is a deer mouse from this group. Toffee has the homozygous genotype bb... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Toffee's genotype for the body hair gene is bb. Toffee's genotype of bb has only b alleles. The b allele is for a hairless body. So, Toffee's phenotype for the body hair trait must be a hairless body.
To check this answer, consider whether Toffee's alleles are dominant or recessive. The allele for a hairy body (B) is d... |
Not supported with pagination yet | What kind of sentence is this?
I can't believe settlers went over that mountain without cars! | [
"interrogative",
"exclamatory"
] | 1 | closed choice | grade4 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence tells about something, but it shows surprise and ends with an exclamation point. It is an exclamatory sentence. | |
Not supported with pagination yet | Which tense does the sentence use?
Dan will dust off the shelf with a rag. | [
"future tense",
"past tense",
"present tense"
] | 0 | closed choice | grade3 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, dust. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
see - stroke | [
"scissors",
"sit"
] | 1 | closed choice | grade2 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since sit is between the guide words see - stroke, it would be found on that page. | |
Not supported with pagination yet | Based on this information, what is this pea plant's genotype for the flower position gene? | [
"axial flowers",
"FF"
] | 1 | This passage describes the flower position trait in pea plants:
In a group of pea plants, some individuals have axial flowers and others have terminal flowers. In this group, the gene for the flower position trait has two alleles. The allele F is for axial flowers, and the allele f is for terminal flowers.
A certain p... | closed choice | grade8 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's genotype for a gene is its combination of alleles for that gene. The pea plant has two alleles for axial flowers (F). So, the plant's genotype for the flower position gene is FF. |
Not supported with pagination yet | Compare the motion of three sailboats. Which sailboat was moving at the highest speed? | [
"a sailboat that moved 35kilometers west in 5hours",
"a sailboat that moved 90kilometers west in 5hours",
"a sailboat that moved 55kilometers east in 5hours"
] | 1 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each sailboat moved and the time it took to move that distance. The direction each sailboat moved does not affect its speed.
Notice that each sailboat moved for 5 hours. The sailboat that moved 90 kilometers moved the farthest distance in that time. So, that sailboat must have moved at the highest ... | |
Not supported with pagination yet | What do these two changes have in common?
melting wax
baking an apple pie | [
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by heating.",
"Both are caused by cooling."
] | 2 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
Melting wax is a change of state. So, it is a physical change. The wax changes from solid to liquid. But it is still made of the same type of matter.
Baking an apple pie is a chemical change. The type of matter in the pie changes when it is baked. The crust turns brown, and the apples b... | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample B",
"sample A"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade7 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sample B mus... | |
Which statement describes the Great Victoria Desert ecosystem? | [
"It has dry, thin soil.",
"It has only a few types of organisms."
] | 0 | Figure: Great Victoria Desert.
The Great Victoria Desert is a hot desert ecosystem located in Western Australia and South Australia. It is the largest desert in Australia! The Great Victoria Desert is home to the rare great desert skink. To stay cool during the day, great desert skinks live in holes they dig in the gro... | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A hot desert is a type of ecosystem. Hot deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, the following statements describe the Great Victoria Desert ecosystem: a small amount of rain, dry, thin soil, and many different types of organisms. It has a ... | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Jada plays hockey. | [
"acquired",
"inherited"
] | 0 | Hint: Playing hockey takes practice. | closed choice | grade3 | natural science | biology | Heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | People are not born knowing how to play hockey. Instead, some people learn how to play hockey. Playing the sport takes practice. So, playing hockey is an acquired trait. |
Not supported with pagination yet | Which text uses the word unique in its traditional sense? | [
"Reid bought his unique coffee table from a factory outlet store in Oakdale.",
"Reid custom ordered his unique coffee table from a master craftsman in Oakdale."
] | 1 | closed choice | grade9 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The first text uses unique in its traditional sense: being the only one of its kind.
Reid custom ordered his unique coffee table from a master craftsman in Oakdale.
The second text uses unique in its nontraditional sense: interesting or unusual. Reid's coffee table is an interesting style, but it was made in a factory ... | |
Which property do these two objects have in common? | [
"scratchy",
"yellow"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
Yellow is a color.
This color is yellow. Both objects are yellow.
A scratchy object is rough and itchy against your skin. Neither of the objects are scratchy.
The property that both objects have in common is yellow. | |
Which continent is highlighted? | [
"South America",
"Australia",
"Europe",
"Africa"
] | 2 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Europe. | ||
Which month is the wettest on average in Christchurch? | [
"May",
"August",
"December"
] | 0 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Christchurch, look at the graph.
Choice "May" is incorrect.
Choice "Aug" is incorrect.
Choice "Dec" is incorrect.
May has an average monthly precipitation of about 70 millimeters. This is higher than in any other month. So, May is the wettest month on average. | |
Complete the text to describe the diagram.
Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium. | [
"to the right than to the left",
"to the left than to the right"
] | 0 | The diagram below shows a solution with one solute. Each solute particle is represented by a yellow ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.
The diagram shows how the solution can change over time... | closed choice | grade6 | natural science | chemistry | Solutions | Diffusion across membranes | In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion.
A... | Look at the diagram again. It shows you how the solution changed during the process of diffusion.
Before the solute particles reached equilibrium, there were 8 solute particles on the left side of the membrane and 4 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... | |
Which property matches this object? | [
"bendable",
"hard"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. | Look at the object.
Think about each property.
A hard object keeps its shape when you squeeze it. The shield is hard.
A bendable object can be bent without breaking. The shield is not bendable. | |
What is the expected ratio of offspring that have Marfan syndrome to offspring that do not have Marfan syndrome? Choose the most likely ratio. | [
"2:2",
"4:0",
"0:4",
"1:3",
"3:1"
] | 1 | This passage describes the Marfan syndrome trait in humans:
Marfan syndrome is a condition that affects a protein called fibrillin. Fibrillin helps support many parts of the human body and also affects growth. Humans with Marfan syndrome tend to be taller than average and have long limbs, fingers, and toes. They may al... | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring that do or do not have Marfan syndrome, consider whether each phenotype is the dominant or recessive allele's version of the Marfan syndrome trait. The question tells you that the M allele, which is for having Marfan syndrome, is dominant over the m ... | |
What can Devin and Connor trade to each get what they want? | [
"Devin can trade his tomatoes for Connor's broccoli.",
"Connor can trade his almonds for Devin's tomatoes.",
"Connor can trade his broccoli for Devin's oranges.",
"Devin can trade his tomatoes for Connor's sandwich."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Devin and Connor open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Devin wanted b... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Devin wanted broccoli in his lunch and Connor was hoping for tomatoes. Look at the labeled part of the images.
Devin has tomatoes. Connor has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | ||
Not supported with pagination yet | What do these two changes have in common?
a slice of banana turning brown
burning food on a stove | [
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by heating."
] | 2 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
A slice of banana turning brown is a chemical change. The part of the banana in contact with the air reacts with oxygen and turns into a different type of matter.
Burning food on a stove is a chemical change. When the food burns, the type of matter in it changes. The food turns black an... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Ms. Gordon has suggested that our schools let students take statistics instead of algebra to graduate. Frankly, it is puzzling to me that she thinks algebra is a useless subject. | [
"circular reasoning: an argument that supports a claim with the claim itself",
"appeal to nature: the assumption that natural things are always good",
"straw man: a misrepresentation of an opponent's position that makes it easier to argue against"
] | 2 | closed choice | grade12 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Ms. Gordon thinks algebra is useless because she would let students take statistics instead. However, Ms. Gordon only claimed that students should be allowed to take statistics instead of algebra. She did not suggest that algebra is a useless subject. This illustrates a type of logical fallacy know... | |
Not supported with pagination yet | Choose the poem that uses end rhyme. | [
"The summer and autumn had been so wet,\nThat in winter the corn was growing yet:\n'Twas a sorrowful sight to see, all around,\nThe grain lie rotting on the ground.",
"Black shapes bending,\nTaxicabs crush in the crowd.\nThe tops are each a shining square\nShuttles that steadily press through woolly fabric."
] | 0 | From John Gould Fletcher, "London Excursion" and adapted from Robert Southey, "The Legend of Bishop Hatto" | closed choice | grade4 | language science | reading-comprehension | Poetry elements | Identify elements of poetry | Poetry is a special kind of writing. It has many elements that make it different from ordinary writing. Knowing these elements can help you talk about poetry, understand it better, and enjoy it more.
A poem rhymes when it has a pattern of words that end in the same sound.
End rhyme is when the rhymes appear at the end ... | This poem uses end rhyme. Its rhymes come at the end of its lines.
That in winter the corn was growing yet:
The grain lie rotting on the ground. |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
The candidate's fixation on his opponent's failure to wear a flag pin on flag day seemed at times to border on McCarthyism. | [
"British history",
"U.S. history"
] | 1 | closed choice | grade11 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Gree... | The source of the allusion McCarthyism is U.S. history.
In the 1950 s, U.S. senator Joseph McCarthy led a ruthless investigation of Americans whom he accused of being Communist sympathizers. Based on flimsy or nonexistent evidence, the accusations created a climate of suspicion and fear.
The allusion McCarthyism means ... | |
Which months have average temperatures of 30°C or higher in Dubai? | [
"October through February",
"May through September",
"January through May"
] | 1 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Temperature is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average temperature for each month. The average temperature can be used to describe the climate of a location.
A line graph can be used t... | To describe the average temperature trends in Dubai, look at the graph.
Choice "Feb" is incorrect.
Choice "May" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Choice "Jan" is incorrect.
The average temperatures in May, June, July, August, and September are all 30°C or higher. So, May through Septem... | |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Grand Canyon.
The Grand Canyon is a steep, wide canyon that receives many visitors each year. During the summer, the temperatures at the top of the canyon are usually mild, while the bottom of the canyon is much hotter.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pat... | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
The Grand Canyon is a steep, wide canyon that receives many visitors each year. During the summer, the temperatures at the top of the canyon are usually mild, while the bottom of the canyon is much hotter.
The underlined part of the passage tells you about the usual temperature pattern at th... | |
Which of these states is farthest south? | [
"Minnesota",
"Maine",
"Wyoming",
"Washington"
] | 2 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the south arrow is pointing. Wyoming is farthest south. | ||
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"neither; the samples have the same temperature",
"sample B"
] | 0 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... | |
Which country is highlighted? | [
"Saint Lucia",
"Haiti",
"Saint Vincent and the Grenadines",
"Barbados"
] | 3 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Barbados. | |||
What is the capital of Utah? | [
"Denver",
"Cheyenne",
"Orlando",
"Salt Lake City"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Salt Lake City is the capital of Utah. | |||
Not supported with pagination yet | What information supports the conclusion that Deb inherited this trait? | [
"Deb's hair is the same color as her brown eyes.",
"Deb's father has brown eyes. He passed this trait down to Deb."
] | 1 | Read the description of a trait.
Deb has brown eyes. | closed choice | grade4 | natural science | biology | Traits and heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | How long is an adult alligator? | [
"11 miles",
"11 yards",
"11 inches",
"11 feet"
] | 3 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of an adult alligator is 11 feet.
11 inches is too short. 11 yards and 11 miles are too long. |
What is the capital of South Carolina? | [
"Jackson",
"Charleston",
"Columbia",
"Baton Rouge"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Columbia is the capital of South Carolina. | |||
Not supported with pagination yet | What information supports the conclusion that Max acquired this trait? | [
"Max learned how to knit in an after school program.",
"Max knits sweaters using cotton, wool, and other types of yarn."
] | 0 | Read the description of a trait.
Max knows how to knit sweaters. | closed choice | grade3 | natural science | biology | Heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Select the organism in the same genus as the Morelet's tree frog. | [
"Crocodylus moreletii",
"Agalychnis callidryas",
"Lissotriton vulgaris"
] | 1 | This organism is a Morelet's tree frog. Its scientific name is Agalychnis moreletii. | closed choice | grade7 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Morelet's tree frog's scientific name is Agalychnis moreletii. The first word of its scientific name is Agalychnis.
Agalychnis callidryas is in the genus Agalychnis. The first word of its scientific name is Agalychnis. So, Agalychnis callidryas and Agalychnis moreletii are in the same genus.
Lissotriton vulgaris is i... | |
Not supported with pagination yet | Which figure of speech is used in this text?
Rhianna's Bistro used to be a great place to go for a delicious and carefully prepared dinner, but nobody goes there anymore: it's too crowded. | [
"oxymoron",
"paradox"
] | 1 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a paradox, a statement that might at first appear to be contradictory, but that may in fact contain some truth.
Nobody goes there anymore: it's too crowded at first appears to be contradictory, because if no one goes to the restaurant, then the restaurant should be empty, not crowded. However, it contains... | |
Not supported with pagination yet | What does the verbal irony in this text suggest?
"It was my good luck to have to study for a test while all my friends went to the water park," Steven remarked. | [
"Steven was upset about staying home.",
"Steven wanted time to catch up on his responsibilities."
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking dow... | The text uses verbal irony, which involves saying one thing but implying something very different.
Good luck ironically suggests that Steven was upset about staying home. Steven was actually unlucky because he couldn't join his friends at the water park. | |
Not supported with pagination yet | What does the simile in this text suggest?
The president said that his belief in freedom of expression is as solid as the ground we stand on. | [
"The president's belief in freedom of expression is firm and unwavering.",
"The president's belief in freedom of expression is recorded in a document."
] | 0 | closed choice | grade9 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A simile uses like or as to compare two things that are not actually alike.
The cat's fur was as dark as the night. | The text includes a simile, using like or as to compare two things that are not actually alike.
The simile solid as the ground we stand on suggests that the president's belief in freedom of expression is firm and unwavering. The ground is solid and firm, which indicates that the president's belief is, too. | |
Not supported with pagination yet | Would you find the word admire on a dictionary page with the following guide words?
actually - afraid | [
"yes",
"no"
] | 0 | yes or no | grade4 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since admire is between the guide words actually - afraid, it would be found on that page. | |
Which specific humidity level was measured within the outlined area shown? | [
"2 grams of water vapor per kilogram of air",
"11 grams of water vapor per kilogram of air",
"12 grams of water vapor per kilogram of air"
] | 0 | The map below shows humidity in the lower atmosphere on October 17, 2013. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in North America on that day.
Look at the map. Then, answer the question below.
Data source: Unite... | closed choice | grade7 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 0 and 6 grams of water vapor per kilogram of air.
2 grams of water vapor per kilogram of... | |
Not supported with pagination yet | Based on this information, what is this plant's phenotype for the fruit texture trait? | [
"bumpy fruit",
"smooth fruit"
] | 1 | In a group of cucumber plants, some individuals have bumpy fruit and others have smooth fruit. In this group, the gene for the fruit texture trait has two alleles. The allele for smooth fruit (f) is recessive to the allele for bumpy fruit (F).
A certain cucumber plant from this group has the homozygous genotype ff for ... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | The cucumber plant's genotype for the fruit texture gene is ff. The cucumber plant's genotype of ff has only f alleles. The f allele is for smooth fruit. So, the cucumber plant's phenotype for the fruit texture trait must be smooth fruit.
To check this answer, consider whether the cucumber plant's alleles are dominant ... |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Identify the question that Samuel's experiment can best answer. | [
"Do cardinals eat more seeds per visit from feeders containing sunflower seeds compared to feeders containing flax seeds?",
"Do cardinals visit feeders containing sunflower seeds more often than feeders containing flax seeds?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Samuel set up five pairs of platform bird feeders around his yard. He filled one feeder in each pair with sunflower seeds and the other feeder with flax seeds. For one week, Samuel watched cardinals visiting the feeders... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Which text uses the word factoid in its traditional sense? | [
"Oscar subscribed to an online newsletter about African wildlife; he enjoyed receiving daily factoids about the wild animals' natural habitats and behavior.",
"Oscar seemed to know a lot about African wildlife, but it turned out that his knowledge was mostly based on factoids gleaned from unreliable websites."
] | 1 | closed choice | grade9 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The second text uses factoid in its traditional sense: something made up presented as a true fact.
Oscar seemed to know a lot about African wildlife, but it turned out that his knowledge was mostly based on factoids gleaned from unreliable websites.
The first text uses factoid in its nontraditional sense: a trivial but... | |
Not supported with pagination yet | What information supports the conclusion that Jennifer inherited this trait? | [
"Jennifer and her mother both wear their hair in braids.",
"Jennifer's parents have red hair. They passed down this trait to Jennifer."
] | 1 | Read the description of a trait.
Jennifer has red hair. | closed choice | grade3 | natural science | biology | Heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | Which is scratchier? | [
"metal flute",
"sandpaper"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. | Scratchy is a property. A scratchy material is rough and itchy against your skin.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the sandpaper is scratchier. If you touch a piece of sandpaper, it will feel rough and itchy. | |
The United States has a federal system. Based on these definitions, which of these statements would most likely be made by a person who lives under a federal system? | [
"Both my state and national government officials have power over important issues.",
"I only pay attention to state politics since the national government has almost no power.",
"My national government officials decide most issues that come up."
] | 0 | Think about the name of the United States of America. As the name shows, the country has both a united national government and a collection of state governments. In the following questions, you will learn about the relationship between the national government and state governments. You will also learn about how state a... | closed choice | grade6 | social science | civics | Government | State and local government | |||
Which country is highlighted? | [
"Dominica",
"the Dominican Republic",
"Antigua and Barbuda",
"The Bahamas"
] | 0 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Dominica. | |||
Which property do these three objects have in common? | [
"soft",
"blue",
"sticky"
] | 0 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A soft object changes shape when pressed or squeezed. All three objects are soft.
Blue is a color.
This color is blue. The dress and the grapefruit are not blue.
A sticky object can attach or stick to other things. The dress and the tissue are not st... | |
Not supported with pagination yet | Select the activity that doesn't belong. | [
"sweep",
"scrub",
"swing",
"wipe"
] | 2 | closed choice | grade3 | language science | vocabulary | Categories | Select the words that don't belong | Swing doesn't belong.
Sweep, wipe, and scrub all name ways to clean. | ||
Which of the following organisms is the omnivore in this food web? | [
"parasitic jaeger",
"bear sedge",
"grizzly bear"
] | 2 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade6 | natural science | biology | Ecological interactions | Interpret food webs I | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Omnivores are consumers that eat both producers and other consumers. So, an omnivore has arrows pointing to it from at least one producer and at least one consumer.
The grizzly bear has an arrow pointing to it from the bilberry, which is a producer. The grizzly bear also has an arrow pointing to it from the barren-grou... | |
Which country is highlighted? | [
"Papua New Guinea",
"Australia",
"Fiji",
"Tuvalu"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Australia.
Is Australia a country or a continent?
Both! Australia is a country in Oceania, a region made up of many lands and islands in the Pacific Ocean. Many people say that Australia is the world's smallest continent. But some people call Oceania a continent instead. | |||
Which property do these two objects have in common? | [
"bouncy",
"soft"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A soft object changes shape when you squeeze it. Both objects are soft.
A bouncy object will bounce back from the floor if you drop it. Neither of the objects are bouncy.
The property that both objects have in common is soft. | |
Not supported with pagination yet | Based on this information, what is Admiral's genotype for the body color gene? | [
"a gray body",
"BB"
] | 1 | In a group of guppies, some individuals have a gray body and others have a golden body. In this group, the gene for the body color trait has two alleles. The allele B is for a gray body, and the allele b is for a golden body.
Admiral, a guppy from this group, has a gray body. Admiral has two alleles for a gray body. | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's genotype for a gene is its combination of alleles for that gene. Admiral has two alleles for a gray body (B). So, Admiral's genotype for the body color gene is BB. |
Not supported with pagination yet | Compare the motion of three motorboats. Which motorboat was moving at the lowest speed? | [
"a motorboat that moved 140kilometers east in 5hours",
"a motorboat that moved 235kilometers west in 5hours",
"a motorboat that moved 205kilometers west in 5hours"
] | 0 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each motorboat moved and the time it took to move that distance. The direction each motorboat moved does not affect its speed.
Notice that each motorboat moved for 5 hours. The motorboat that moved 140 kilometers moved the shortest distance in that time. So, that motorboat must have moved at the lo... | |
Not supported with pagination yet | How long is a parking space? | [
"8 centimeters",
"8 kilometers",
"8 meters",
"8 millimeters"
] | 2 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using metric units, length can be written with units of millimeters, centimeters, meters, or kilometers. One meter contains 100 centimeters or 1,000 millimeters. So, 1 meter is lar... | The best estimate for the length of a parking space is 8 meters.
8 millimeters and 8 centimeters are too short. 8 kilometers is too long. |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
member - musket | [
"mark",
"mitt"
] | 1 | closed choice | grade4 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since mitt is between the guide words member - musket, it would be found on that page. | |
Not supported with pagination yet | What does the allusion in this text suggest?
When Diana claimed she had loaded the dishwasher before turning on Dancing with the Stars, her mother replied, "Your nose is growing!" | [
"Diana was trustworthy.",
"Diana was lying."
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An allusion is a brief reference to something or someone well known, often from history or literature.
"I'd better get home before I turn into a pumpkin!" Lila remarked. | The text uses an allusion, a brief reference to someone or something well known.
The allusion nose is growing suggests that Diana was lying. In the story of Pinocchio, when Pinocchio lies, his nose grows longer. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
In this election, we've seen the highest voter turnout ever recorded. If you have any doubts about Eric Hong's qualifications, just look at how many people have come out to vote for him. | [
"bandwagon fallacy: the assumption that the popular choice is automatically correct",
"false causation: the assumption that because two things happened together, one caused the other"
] | 0 | closed choice | grade6 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Eric Hong is the most qualified candidate, because so many voters turned out to vote. However, even though many people voted for him, that doesn't necessarily mean that Eric Hong is the most qualified candidate. This illustrates a type of logical fallacy known as the bandwagon fallacy. | |
Which statement is supported by these pictures? | [
"The American lobster has legs, but Homarus hakelensis did not.",
"The American lobster has claws, and so did Homarus hakelensis."
] | 1 | Look at the two pictures below. The American lobster is a modern organism, and Homarus hakelensis is an extinct one. The American lobster has many of the traits that Homarus hakelensis had. | closed choice | grade4 | natural science | earth-science | Fossils | Compare ancient and modern organisms: use observations to support a hypothesis | Fossils are the remains of organisms that lived long ago. Scientists look at fossils to learn about the traits of ancient organisms. Often, scientists compare fossils to modern organisms.
Some ancient organisms had many traits in common with modern organisms. Other ancient organisms were very different from any organis... | The American lobster has claws and legs.
This fossil shows the remains of claws and legs. So, Homarus hakelensis had both claws and legs.
Choice "The American lobster has claws, and so did Homarus hakelensis." is incorrect.
This statement is supported by the pictures. You can see that the American lobster has claws. Fr... | |
What is the probability that a bitter melon plant produced by this cross will have light brown seeds? | [
"2/4",
"4/4",
"1/4",
"3/4",
"0/4"
] | 0 | In a group of bitter melon plants, some individuals have dark brown seeds and others have light brown seeds. In this group, the gene for the seed color trait has two alleles. The allele for dark brown seeds (D) is dominant over the allele for light brown seeds (d).
This Punnett square shows a cross between two bitter m... | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | ||
Select the chemical formula for this molecule. | [
"HO",
"H2O",
"H3O2",
"H2O2"
] | 1 | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Identify chemical formulas for ball-and-stick models | Every substance around you is made up of atoms. Atoms can link together to form molecules. The links between atoms in a molecule are called chemical bonds. Different molecules are made up of different chemical elements, or types of atoms, bonded together.
Scientists use both ball-and-stick models and chemical formulas ... | H is the symbol for hydrogen. According to the legend, hydrogen atoms are shown in light gray. O is the symbol for oxygen. According to the legend, oxygen atoms are shown in red. This ball-and-stick model shows a molecule with two hydrogen atoms and one oxygen atom. The chemical formula will contain the symbols H and O... | ||
Not supported with pagination yet | Select the mixture. | [
"sugar",
"yogurt"
] | 1 | closed choice | grade2 | natural science | physics | Mixtures | Identify mixtures | A pure substance is made of only one type of matter.
A mixture is made of two or more types of matter mixed together. | ||
What is the expected ratio of offspring with mirror scales to offspring with normal scales? Choose the most likely ratio. | [
"2:2",
"1:3",
"3:1",
"4:0",
"0:4"
] | 3 | This passage describes the scale type trait in common carp:
Carp are large freshwater fish that are often raised for food. Before a carp is cooked, its scales are usually removed. Normally, carp are covered in small scales arranged in straight rows. But carp with mirror scales have large scales arranged in scattered pa... | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with mirror scales or normal scales, consider whether each phenotype is the dominant or recessive allele's version of the scale type trait. The question tells you that the A allele, which is for normal scales, is dominant over the a allele, which is ... |
Subsets and Splits
Validation Subject & Topic Summary
Reveals the distribution and count of images across different subjects, topics, and categories, highlighting the most prevalent combinations.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of entries across different topics where images are missing, allowing for a more representative analysis of text-only data.
SQL Console for derek-thomas/ScienceQA
This query provides a balanced sample of text entries across different topics, ensuring that each topic is proportionally represented, which is useful for further analysis or model training.
Random Sample by Topic Ratio
This query balances the dataset by randomly selecting a proportional number of items from each topic to create a balanced subset of 3000 items, revealing how well-represented each topic is in the dataset.
Topic Counts by Grade
Provides a breakdown of the number of questions by topic (physics, chemistry, biology, geography) for each grade level, revealing the distribution of question types.
Validation Category Counts
Counts the number of unique questions per category, helping to understand the distribution of questions across different categories.
SQL Console for derek-thomas/ScienceQA
Identifies categories, questions, and answers that appear more than four times in the validation dataset with images, highlighting common or repetitive entries.
ScienceQA Validation Grouped Data
Provides a count of images and overall occurrences for each combination of subject, topic, category, and answer, helping to identify popular or common configurations.
Train Data with Numeric Choices
This query identifies distinct rows in the dataset where one of the elements in the choices column contains a number and the image column is null, providing insight into data completeness and specific patterns in the choices.
Physics Train with Images and Lectures
Retrieves physics educational records with images and lectures for specific grade levels, providing basic filtering but offering limited analytical insight beyond data availability.
Physics Q&As with Images
Retrieves physics-related training examples with images for specific grade levels, providing basic filtered data but offering limited analytical insight beyond simple categorization.
Physics Questions Gr 2-6 With Images
Retrieves physics-related test items with images for specific grade levels, providing basic filtered data but offering limited analytical insights beyond simple data retrieval.
Filter Text-only Train Questions
Retrieves questions and related metadata from the dataset excluding those with images, offering basic data filtering.
Skills Without Images
Counts the number of skills where the image is missing, providing a basic overview of incomplete data.
Top 10 Hard Text Questions
Retrieves the top 10 longest questions without images, ordered by grade level in descending order, providing basic insight into potentially more complex questions.
SQL Console for derek-thomas/ScienceQA
Counts the occurrences of each category, question, and answer combination where an image is present, providing basic filtering on the dataset.
List ScienceQA Topics
Lists all unique topics in the dataset, which provides a basic overview of the categories present.
Cultural Questions Without Images
Retrieves 100 entries from the 'train' dataset where the image is missing and the topic is 'culture', providing basic filtering with limited analytical value.
Biology Skills for Grades 2 & 3
Lists unique skills and categories for biology topics in grades 2 and 3, providing basic filtering of the dataset.
Biology Qs for Grades 2 &
Retrieves all entries for grade 2 and grade 3 students focusing on the biology topic, providing a basic filtered view of the dataset.
Biology Grade 3 Questions Count
Counts the number of entries for grade 3 students in the biology topic, providing a basic count of data points.
Select Test Rows With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering without deep analytical value.
Test Images Query
This query retrieves a limited sample of rows where the image column is not null, providing basic filtering but minimal analytical value.
Test Data with Images
The query filters out rows where the image column is not null, providing a basic subset of the data but without much analytical insight.
Select Test Entries With Images
The query retrieves all records from the 'test' table where the 'image' column is not null, providing basic filtering but no deeper analytical insight.