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Which of these states is farthest west? | [
"Vermont",
"Oregon",
"Maine",
"Pennsylvania"
] | 1 | 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 west arrow is pointing. Oregon is farthest west. | ||
Not supported with pagination yet | Compare the motion of two blue whales. Which blue whale was moving at a lower speed? | [
"a blue whale that moved 75miles in 10hours",
"a blue whale that moved 100miles in 10hours"
] | 0 | closed choice | grade2 | 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 mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects movi... | Look at the distance each blue whale moved and the time it took to move that distance.
One blue whale moved 75 miles in 10 hours.
The other blue whale moved 100 miles in 10 hours.
Notice that each blue whale spent the same amount of time moving. The blue whale that moved 75 miles moved a shorter distance in that time. ... | |
What is the direction of this push? | [
"toward the bride's foot",
"away from the bride's foot"
] | 1 | A bride kicks over a pot of rice. Her foot pushes the pot, and the rice spills out. | closed choice | grade2 | natural science | physics | Force and motion | Identify pushes and pulls | One object can make another object move with a push or a pull.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The bride's kick is a type of push. She kicks the pot of rice away from her foot and spills the rice. The direction of the push is away from the bride's foot. | |
Not supported with pagination yet | Complete the statement.
Krypton is (). | [
"an elementary substance",
"a compound"
] | 0 | Krypton is one of the rarest gases found in Earth's atmosphere. The chemical formula for krypton is Kr. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using chemical formulas | Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For s... | You can tell whether krypton is an elementary substance or a compound by counting the number of symbols in its chemical formula. A symbol contains either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for krypton is Kr. This formula contains one symbol: Kr. So, the... |
Not supported with pagination yet | Which sentence states a fact? | [
"Hawaii is too far from the other states.",
"The state of Hawaii is located in the Pacific Ocean."
] | 1 | closed choice | grade5 | social science | civics | Social studies skills | Identify facts and opinions | A fact is something that can be proved to be true. Facts can be proved by observing, measuring, or studying information.
The flag of the United States has 13 stripes.
This is a fact. It can be proved by looking at the flag and counting the number of stripes.
An opinion is something that a person believes, thinks, or fe... | The second sentence states a fact.
The state of Hawaii is located in the Pacific Ocean.
It can be proved by finding Hawaii on a world map.
The first sentence states an opinion.
Hawaii is too far from the other states.
Too far shows what a person believes, thinks, or feels. Another person might have a different opinion ... | |
What is the capital of Montana? | [
"Phoenix",
"Missoula",
"Helena",
"Cheyenne"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Helena is the capital of Montana. | |||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 2.",
"The magnetic force is stronger in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. | |
Which animal's body is better adapted for protection against a predator with sharp teeth? | [
"queen scallop",
"hyrax"
] | 0 | Desert tortoises are adapted to protect themselves from a predator with sharp teeth. They have hard outer shells covering their bodies. A can pull its head and legs into its shell when attacked.
Figure: desert tortoise. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the desert tortoise.
The desert tortoise has a hard outer shell. Its body is adapted for protection against a predator with sharp teeth. The hard shell makes it difficult for predators to hurt or kill the desert tortoise.
Now look at each animal. Figure out which animal has a similar adaptation.
... | |
What is the capital of Iowa? | [
"Frankfort",
"Des Moines",
"Madison",
"Cedar Rapids"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Des Moines is the capital of Iowa. | |||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
advertise - alike | [
"afford",
"approach"
] | 0 | closed choice | grade8 | 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 afford is between the guide words advertise - alike, it would be found on that page. | |
Not supported with pagination yet | Which sentence states a fact? | [
"Summers in the United States are too hot.",
"In North America, summer starts in late June."
] | 1 | closed choice | grade5 | social science | civics | Social studies skills | Identify facts and opinions | A fact is something that can be proved to be true. Facts can be proved by observing, measuring, or studying information.
The flag of the United States has 13 stripes.
This is a fact. It can be proved by looking at the flag and counting the number of stripes.
An opinion is something that a person believes, thinks, or fe... | The second sentence states a fact.
In North America, summer starts in late June.
It can be proved by checking a calendar.
The first sentence states an opinion.
Summers in the United States are too hot.
Too hot shows what a person believes, thinks, or feels. Another person might have a different opinion about how hot is... | |
Not supported with pagination yet | Which figure of speech is used in this text?
We don't need to decrease the cost of the product; we need to increase the quality of the product. | [
"euphemism",
"antithesis"
] | 1 | 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 antithesis, the contrasting of opposing ideas within a parallel grammatical structure.
The sentence contrasts two things related to a product, decrease the cost and increase the quality. | |
Not supported with pagination yet | Which is the stickiest? | [
"jam",
"cardboard",
"nylon shorts"
] | 0 | closed choice | grade4 | 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. Some examples of properties are shiny, hard, fragile, and stretchy.
For examp... | Sticky is a property. A sticky material easily attaches to other things.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the jam is the stickiest. If you touch jam, it will stick to you. | |
Which solution has a higher concentration of purple particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | 1 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade8 | 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 purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... | |
Which property do these three objects have in common? | [
"yellow",
"transparent",
"smooth"
] | 2 | 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.
You can see clearly through a transparent object. The glass bottle is transparent, but the gold ring and the car bumper are not.
Yellow is a color.
This color is yellow. The gold ring is yellow, but the glass bottle and the car bumper are not.
A smoo... | |
Not supported with pagination yet | Which phrase has a more negative connotation? | [
"use water",
"waste water"
] | 1 | closed choice | grade4 | language science | vocabulary | Shades of meaning | Positive and negative connotation | Connotation is the feeling or idea that goes along with a word or phrase. Some words are close in meaning but have different connotations.
For example, think about the words eager and impatient. They both mean wanting something to happen, but they have different connotations.
Eager has a positive connotation. It is a n... | Waste water has a more negative connotation. If you waste water, you use it in a bad way. | |
Does Danio rerio have cells that have a nucleus? | [
"no",
"yes"
] | 1 | This organism is Danio rerio. It is a member of the animal kingdom.
Danio rerio is commonly called a zebrafish. Young zebrafish are see-through! Scientists can easily observe their insides. This trait makes zebrafish a useful organism for scientists to study. | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Danio rerio is an animal. Animal cells have a nucleus. | |
Not supported with pagination yet | Based on this information, what is Nutmeg's phenotype for the fur color trait? | [
"ff",
"light fur"
] | 1 | In a group of rock pocket mice, some individuals have dark fur and others have light fur. In this group, the gene for the fur color trait has two alleles. The allele F is for dark fur, and the allele f is for light fur.
Nutmeg, a rock pocket mouse from this group, has light fur. Nutmeg has two alleles for light fur. | 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 phenotype for a trait is its observable version of that trait. Nutmeg's observable version of the fur color trait is light fur. So, Nutmeg's phenotype for the fur color trait is light fur. |
Select the reptile below. | [
"western rattlesnake",
"gorilla"
] | 0 | Reptiles have scaly, waterproof skin. Most reptiles live on land. An American alligator is an example of a reptile. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A western rattlesnake is a reptile. It has scaly, waterproof skin.
A gorilla is a mammal. It has fur and feeds its young milk. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
We cannot have shorter prison sentences, even for low-level criminals. It would only be a matter of time before all prison sentences were reduced and violent offenders were roaming the streets! | [
"ad hominem: an attack against the person making the argument, rather than the argument itself",
"bandwagon fallacy: the assumption that the popular choice is automatically correct",
"slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences"
] | 2 | closed choice | grade11 | 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 going easy on low-level criminals will lead to going easy on violent criminals, too. However, there is no reason why easing penalties for low-level criminals must necessarily lead to changes to penalties for violent criminals. This illustrates a type of logical fallacy known as the slippery slope f... | |
Not supported with pagination yet | Complete the sentence.
A () can grow into a new plant. | [
"petal",
"leaf",
"seed"
] | 2 | closed choice | grade4 | natural science | biology | Plants | Describe and construct flowering plant life cycles | Many plants have flowers. These plants can use their flowers to reproduce, or make new plants like themselves. How do plants use their flowers to reproduce?
First, the male part of the flower makes pollen, and the female part makes eggs. Animals, wind, or water can move pollen. Pollination is what happens when pollen i... | A seed can germinate and grow into a new plant.
Plants can grow leaves and petals. But leaves and petals cannot grow into a new plant. | |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Granada Province.
Granada Province is located in southern Spain. Clouds often cover the mountains year-round in this part of the country.
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.
Granada Province is located in southern Spain. Clouds often cover the mountains year-round in this part of the country.
The underlined part of the passage tells you about the usual pattern of cloud cover in Granada Province. This passage does not describe what the weather is like on a partic... | |
Not supported with pagination yet | Which organ works in groups to move the body's bones? | [
"heart",
"stomach",
"brain",
"muscles"
] | 3 | closed choice | grade5 | natural science | biology | Animals | Human organs and their functions | |||
Identify the question that Jada's experiment can best answer. | [
"Does linen fabric turn darker than cotton fabric when soaked in a mixture of black dye and water?",
"Does fabric turn darker when soaked in a mixture of black dye and water for 15 minutes compared to 30 minutes?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Jada prepared ten buckets, each with one gallon of boiling water and three tablespoons of black fabric dye. Jada soaked white linen fabric squares in five of the buckets, and white cotton fabric squares in the other fiv... | 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... | ||
What is the expected ratio of offspring that have horns to offspring that do not have horns? Choose the most likely ratio. | [
"0:4",
"2:2",
"1:3",
"4:0",
"3:1"
] | 3 | In a group of cows, some individuals have horns and others do not. In this group, the gene for the horns trait has two alleles. The allele for having horns (h) is recessive to the allele for not having horns (H).
This Punnett square shows a cross between two cows. | 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 horns, consider whether each phenotype is the dominant or recessive allele's version of the horns trait. The question tells you that the h allele, which is for having horns, is recessive to the H allele, which is for not having... | |
Which property matches this object? | [
"hard",
"soft"
] | 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 track suit is not hard.
A soft object changes shape when you squeeze it. The track suit is soft. | |
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 | 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 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... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
bicycle - butterfly | [
"bee",
"bruise"
] | 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 bruise is between the guide words bicycle - butterfly, it would be found on that page. | |
Which property matches this object? | [
"soft",
"translucent"
] | 1 | Select the better answer. | closed choice | grade3 | 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. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A translucent object lets light through. But you cannot see clearly through a translucent object. The icicle is translucent.
A soft object changes shape when pressed or squeezed. The icicle is not soft. | |
What can Fernando and Manuel trade to each get what they want? | [
"Fernando can trade his tomatoes for Manuel's carrots.",
"Manuel can trade his broccoli for Fernando's oranges.",
"Manuel can trade his almonds for Fernando's tomatoes.",
"Fernando can trade his tomatoes for Manuel'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.
Fernando and Manuel open their lunch boxes in the school cafeteria. Neither Fernando nor Manuel got everything that they wanted. ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Fernando wants broccoli. Manuel wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want. | ||
Which property matches this object? | [
"stretchy",
"transparent"
] | 1 | Select the better answer. | closed choice | grade3 | 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. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
You can see clearly through a transparent object. The glass flask is transparent.
A stretchy object gets longer when you pull on it. The glass flask is not stretchy. | |
Not supported with pagination yet | Which object has less thermal energy? | [
"a 10-kilogram block of iron at a temperature of 225°F",
"a 10-kilogram block of iron at a temperature of 210°F"
] | 1 | The objects are identical except for their temperatures. | closed choice | grade3 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both ... | The two blocks of iron have the same mass but different temperatures. Since the 210°F block is colder than the 225°F block, it has less thermal energy. |
Select the fish below. | [
"salmon",
"woodpecker"
] | 0 | Fish live underwater. They have fins, not limbs. A tiger shark is an example of a fish. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A salmon is a fish. It lives underwater. It has fins, not limbs.
A woodpecker is a bird. It has feathers, two wings, and a beak. | |
Which of these states is farthest south? | [
"North Dakota",
"California",
"Rhode Island",
"Washington"
] | 1 | closed choice | grade5 | 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 south arrow is pointing. California is farthest south. | ||
Not supported with pagination yet | Select the description that doesn't belong. | [
"slowly",
"poorly",
"swiftly",
"quickly"
] | 1 | closed choice | grade3 | language science | vocabulary | Categories | Select the words that don't belong | Poorly doesn't belong.
Swiftly, slowly, and quickly all describe the speed at which something happens. | ||
Which of these states is farthest north? | [
"Indiana",
"Arizona",
"Florida",
"Mississippi"
] | 0 | closed choice | grade3 | 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 north arrow is pointing. Indiana is farthest north. | ||
What is the capital of South Dakota? | [
"Pierre",
"Des Moines",
"Sioux Falls",
"Rapid City"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Pierre is the capital of South Dakota. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
Michael returned to the parking lot to find his car somewhat destroyed. Apparently someone had crashed into it while he was working and had broken the entire front windshield. | [
"hyperbole",
"oxymoron"
] | 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 an oxymoron, a joining of two seemingly contradictory terms.
Somewhat destroyed is a contradiction, because somewhat means partially or moderately, and destroyed implies totally wrecked. | |
Not supported with pagination yet | Which tense does the sentence use?
I tell Katy my opinions about her music. | [
"present tense",
"past tense",
"future tense"
] | 0 | closed choice | grade4 | 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 present tense. You can tell because it uses a present-tense verb, tell. The verb tells you about something that is true or happening now. | |
Which part of a pine tree can grow into a new tree? | [
"a seed",
"a needle"
] | 0 | This diagram shows the life cycle of a pine tree. | closed choice | grade8 | natural science | biology | Plant reproduction | Angiosperm and conifer life cycles | Gymnosperms are plants that have seeds but not flowers. Conifers are a type of a gymnosperm. Instead of flowers, conifers have cones. Conifers use their cones for sexual reproduction.
Most conifer trees have both male and female cones. The male cones produce pollen. The female cones produce eggs and a sticky substance ... | A seed can grow into a new tree. When a seed lands on the ground, it can germinate and grow into a new plant.
A pine tree's needles are its leaves! The needles make most of the food for the tree using photosynthesis. They do not grow into a new tree. | |
Not supported with pagination yet | Select the invertebrate. | [
"robin",
"echidna",
"western rattlesnake",
"dung beetle"
] | 3 | Hint: Insects, spiders, and worms are invertebrates. | closed choice | grade5 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A western rattlesnake is a reptile. Like other reptiles, a western rattlesnake is a vertebrate. It has a backbone.
A dung beetle is an insect. Like other insects, a dung beetle is an invertebrate. It does not have a backbone. It has an exoskeleton.
An echidna is a mammal. Like other mammals, an echidna is a vertebrate.... |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni... | |
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... | Each particle in sample B has more mass than each particle in sample A. The particles in sample B also 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 ... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are... | |
Not supported with pagination yet | Based on this information, what is Tim's genotype for the Thomsen disease gene? | [
"Mm",
"having Thomsen disease"
] | 0 | This passage describes the Thomsen disease trait in humans:
In a group of humans, some individuals have Thomsen disease and others do not. In this group, the gene for the Thomsen disease trait has two alleles. The allele M is for having Thomsen disease, and the allele m is for not having Thomsen disease.
Tim, a human ... | 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. Tim has one allele for having Thomsen disease (M) and one allele for not having Thomsen disease (m). So, Tim's genotype for the Thomsen disease gene is Mm. |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Tower of David.
The Tower of David is in the Old City of Jerusalem. Winds in this part of Jerusalem are typically light and from the west.
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 Tower of David is in the Old City of Jerusalem. Winds in this part of Jerusalem are typically light and from the west.
The underlined part of the passage tells you about the usual wind patterns in Jerusalem. This passage does not describe what the weather is like on a particular day. So,... | |
Is Rangifer tarandus made up of many cells? | [
"no",
"yes"
] | 1 | This organism is Rangifer tarandus. It is a member of the animal kingdom.
Rangifer tarandus is commonly called a reindeer. Both male and female reindeer grow large antlers on their heads. Each year, reindeer naturally shed their antlers. The antlers usually fall off in the spring or summer. Then, over the next three to... | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Rangifer tarandus is an animal. Animals are made up of many cells. | |
What is the capital of Delaware? | [
"Dover",
"Topeka",
"Wilmington",
"Wichita"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Dover is the capital of Delaware. | |||
Not supported with pagination yet | What do these two changes have in common?
carving a piece of wood
butter melting on a hot day | [
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by heating.",
"Both are caused by cooling."
] | 1 | 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.
Carving a piece of wood is a physical change. The wood changes shape, but it is still made of the same type of matter.
Butter melting on a hot day is a change of state. So, it is a physical change. The butter changes from solid to liquid, but it is still made of the same type of matter.... | |
Which property do these three objects have in common? | [
"rough",
"sticky",
"soft"
] | 2 | Select the best answer. | closed choice | grade3 | 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. | Look at each object.
For each object, decide if it has that property.
A rough object feels scratchy when you touch it. The dress and the ball of wet clay are not rough.
A soft object changes shape when pressed or squeezed. All three objects are soft.
A sticky object can attach or stick to other things. The dress and th... | |
Not supported with pagination yet | Select the reptile. | [
"domestic pig",
"tortoise",
"leafy seadragon",
"American toad"
] | 1 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Reptiles have scaly, waterproof skin. Most reptiles live on land. | A leafy seadragon is a fish. It lives underwater. It has fins, not limbs.
A seadragon's body looks like a clump of seaweed. This helps the seadragon hide from its predators.
An American 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 domest... | |
Look at the models of molecules below. Select the elementary substance. | [
"methane",
"nitrogen",
"methanol"
] | 1 | closed choice | grade6 | natural science | chemistry | Atoms and molecules | Identify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | |||
What is the capital of Tennessee? | [
"Columbia",
"Bismarck",
"Jackson",
"Nashville"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Nashville is the capital of Tennessee. | |||
Which country is highlighted? | [
"Solomon Islands",
"the Marshall Islands",
"Australia",
"Papua New Guinea"
] | 2 | 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 month has the highest average precipitation in Santiago? | [
"June",
"March",
"October"
] | 0 | 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. Precipitation, or rain and snow, is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in Santiago, look at the graph.
Choice "Mar" is incorrect.
Choice "Jun" is incorrect.
Choice "Oct" is incorrect.
June has an average monthly precipitation of about 80 millimeters. This is higher than in any other month. So, June has the highest average precipitation. | |
What is the name of the colony shown? | [
"New Jersey",
"Maine",
"Massachusetts",
"South Carolina"
] | 0 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New Jersey. | |||
According to the timeline, which of the following statements is true about the period between 500 BCE and 50 BCE? | [
"Rome was at war only a few times during these years.",
"Rome was always at war during these years.",
"Rome was at war for most of these years.",
"Rome was almost never at war for more than two years."
] | 2 | Rome is the name of a city, but it can also refer to the Roman Republic. The Roman Republic began to rule many new places between 500 BCE and 50 BCE. In the questions that follow, you will learn more about the spread of the republic during that time.
This timeline shows when the Roman Republic was at war and peace duri... | closed choice | grade7 | social science | world-history | Rome and the Byzantine Empire | The Roman Republic: part II | Look at the timeline below. The different shades show periods of time when Rome was at war or at peace. The legend shows which shade represents war and which represents peace.
On the timeline, periods of war take up more space than periods of peace do. So, Rome was at war for most of the years between 500 BCE and 50 BC... | ||
Not supported with pagination yet | Would you find the word income on a dictionary page with the following guide words?
iodine - its | [
"yes",
"no"
] | 1 | 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 income is not between the guide words iodine - its, it would not be found on that page. | |
What is the name of the colony shown? | [
"Virginia",
"Mississippi",
"Washington, D.C.",
"Maryland"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Maryland. | |||
Not supported with pagination yet | Which logical fallacy is used in the text?
Janelle has no school spirit—she never comes to any of our football games. | [
"circular reasoning: an argument that supports a claim with the claim itself",
"false dichotomy: an argument that presents only two choices when more options exist"
] | 1 | 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 Janelle doesn't have school spirit, because she doesn't go to football games. However, there may be a number of reasons why Janelle doesn't go to football games. This illustrates a type of logical fallacy known as a false dichotomy. | |
Not supported with pagination yet | Select the plant. | [
"Ladybugs walk and fly.",
"Watercress has small green leaves."
] | 1 | closed choice | grade2 | natural science | biology | Classification | Identify plants and animals | Plants and animals are living things. Living things are called organisms.
Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can.
Animals also come in many shapes and sizes. Most animals can move around. A... | Watercress is a plant. It has small green leaves.
Watercress can grow in water or in the ground.
A ladybug is an animal. It walks and flies.
Some ladybugs have spots. Other types of ladybugs have stripes! | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 1.",
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 2."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The washing machine () when Fernando ran an oversized load of laundry. | [
"complained",
"broke"
] | 0 | closed choice | grade10 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the word complained. It describes the washing machine as if it were a grumpy, overworked person. | |
Not supported with pagination yet | Which type of sentence is this?
As Luca sat down on the rickety old chair, it abruptly collapsed beneath him. | [
"simple",
"compound-complex",
"compound",
"complex"
] | 3 | closed choice | grade8 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is complex. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction as.
As Luca sat down on the rickety old chair, it abruptly collapsed beneath him. | |
Which of the following could Franklin's test show? | [
"if the spacecraft was damaged when using a parachute with a 1 m vent going 200 km per hour",
"how steady a parachute with a 1 m vent was at 200 km per hour",
"whether a parachute with a 1 m vent would swing too much at 400 km per hour"
] | 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 | grade8 | 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 property do these four objects have in common? | [
"flexible",
"translucent",
"soft"
] | 1 | Select the best answer. | closed choice | grade5 | 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 flexible object can be folded or bent without breaking easily. The jello is flexible, but the wet ice cube is not.
A soft object changes shape when pressed or squeezed. The jello is soft, but the wet ice cube is not.
A translucent object lets light... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | 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, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, 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. Poles that are different attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Which object has the least thermal energy? | [
"a fish tank at a temperature of 17°C",
"a fish tank at a temperature of 19°C",
"a fish tank at a temperature of 23°C"
] | 0 | The objects are identical except for their temperatures. | closed choice | grade4 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both ... | All three fish tanks have the same mass but different temperatures. Since the 17°C fish tank is the coldest, it has the least thermal energy. |
Does Drosophila melanogaster have cells that have a nucleus? | [
"no",
"yes"
] | 1 | This organism is Drosophila melanogaster. It is a member of the animal kingdom.
Drosophila melanogaster is commonly called a fruit fly. Many scientists study fruit flies to learn about how animals grow and live. | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | Drosophila melanogaster is an animal. Animal cells have a nucleus. | ||
Not supported with pagination yet | Is the following trait inherited or acquired?
Karen has two arms and two legs. | [
"inherited",
"acquired"
] | 0 | Hint: Karen was born with two arms and two legs. | 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... | Most humans are born with two arms and two legs. So, having two arms and two legs is an inherited trait. |
Not supported with pagination yet | What information supports the conclusion that Ariana inherited this trait? | [
"Ariana's parents have red hair. They passed down this trait to Ariana.",
"Ariana and her mother both wear their hair in braids."
] | 0 | Read the description of a trait.
Ariana has red hair. | closed choice | grade6 | natural science | biology | Genes to traits | 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 from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Which of these organisms contains matter that was once part of the bilberry? | [
"bear sedge",
"grizzly bear"
] | 1 | 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 | grade7 | natural science | biology | Ecological interactions | Interpret food webs II | 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... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the bilberry.There are two paths matter can take from the bilberry to the Arctic fox: bilberry Arctic fox. bilberry brown lemming Arctic fox. There is one path matter can take ... | |
During this time, thermal energy was transferred from () to (). | [
"each vial . . . the surroundings",
"the surroundings . . . each vial"
] | 1 | Scientists in a laboratory were working with insulin, a protein often used to treat diabetes. They left two identical vials of insulin in different places. This table shows how the temperature of each vial changed over 15minutes. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each vial increased, which means that the thermal energy of each vial increased. So, thermal energy was transferred from the surroundings to each vial. | |
Which property do these three objects have in common? | [
"smooth",
"bouncy",
"scratchy"
] | 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 scratchy object is rough and itchy against your skin. None of the objects are scratchy.
A bouncy object will bounce back from the floor if you drop it. The wet bar of soap and the ceramic mug are not bouncy.
A smooth object is not scratchy or rough... | |
Which animal's feet are also adapted for sticking to smooth surfaces? | [
"Madagascar day gecko",
"American alligator"
] | 0 | Red-eyed tree frogs live in the rain forests of Central America. They spend most of their lives in trees. The feet of the tree frog are adapted to stick to the smooth surfaces of leaves.
Figure: red-eyed tree frog. | 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.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the red-eyed tree frog.
The red-eyed tree frog has wide, sticky toes. Its feet are adapted for sticking to smooth surfaces. The red-eyed tree frog uses its toes to walk on the smooth surfaces of leaves without slipping.
Now look at each animal. Figure out which animal has a similar adaptation.
Th... | |
What is the capital of Utah? | [
"Boise",
"Helena",
"Richmond",
"Salt Lake City"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Salt Lake City is the capital of Utah. | |||
Not supported with pagination yet | Which correctly shows the title of a book? | [
"\"Rain, Shine, or Snow\"",
"***Rain, Shine, or Snow***"
] | 1 | closed choice | grade3 | language science | punctuation | Formatting | Formatting titles | The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead.
A Midsummer Night's Dream
The title of a poem, song, or article should be in quotation marks.
"You Are My Sunshine" | A book should be in italics.
The correct title is **Rain, Shine, or Snow**. | |
Not supported with pagination yet | Last year, 50,000 people lived in the city of Newport. But since then, 8,000 people have moved away. What probably happened to the overall supply of houses for sale in Newport? | [
"The supply probably went down.",
"The supply probably went up."
] | 1 | closed choice | grade7 | social science | economics | Supply and demand | Understand overall supply and demand | Overall supply is the total amount of a good or service that producers make and sell. There are several things that can make overall supply go up or down. The table below shows how changes to these things might affect overall supply.
| Resources | Number of producers or suppliers | Expected change in demand
Supply goe... | The population of Newport fell by 8,000 people. Many of the people who have left are probably trying to sell their houses. Since more people are trying to sell their houses, the number of suppliers of houses for sale in Newport has gone up. So, the supply of houses for sale probably went up, too. | |
Not supported with pagination yet | What kind of sentence is this?
What made Isabelle so upset? | [
"exclamatory",
"interrogative"
] | 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 asks something, and it ends with a question mark. It is an interrogative sentence. | |
Not supported with pagination yet | Which body part protects the body's soft parts? | [
"skeleton",
"muscles",
"heart"
] | 0 | closed choice | grade2 | natural science | biology | Animals | Body parts and their functions | |||
Which of these states is farthest south? | [
"California",
"Maine",
"Nebraska",
"Michigan"
] | 0 | closed choice | grade5 | 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 south arrow is pointing. California is farthest south. | ||
Based on the text, where might you find these singing dogs? | [
"at dog shows in America",
"in zoos in Australia",
"in the mountains of New Guinea"
] | 2 | Read the text about singing dogs.
One dog begins howling. Others join in. Some of the howls are high, and some of the howls are low. So, when a group howls together, it can sound like singing. These unique sounds are made by New Guinea singing dogs, and they are quite different from the sounds other dogs make.
New Guin... | closed choice | grade3 | language science | reading-comprehension | Informational texts: level 1 | Read passages about animals | Look at the text in bold below. It tells you where you might find these singing dogs.
New Guinea singing dogs live in the mountains on the island of New Guinea. However, they are very shy and rarely seen. They look a lot like other kinds of wild dogs, but in some ways, they are more like cats. They are great climbers a... | ||
Which country is highlighted? | [
"the Federated States of Micronesia",
"Palau",
"Vanuatu",
"Nauru"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | |||
Which is this organism's common name? | [
"Cybister sugillatus",
"diving beetle"
] | 1 | This organism is Cybister sugillatus. It is also called a diving beetle. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Cybister sugillatus is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Cybister sugillatus is the organism's scientific name. So, you know that diving beetle is the common name. | |
Not supported with pagination yet | What is the volume of a water balloon? | [
"500 liters",
"500 milliliters"
] | 1 | 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 500 milliliters.
500 liters is too much. |
Not supported with pagination yet | What do these two changes have in common?
picking up a paper clip with a magnet
breaking a ceramic plate | [
"Both are caused by heating.",
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling."
] | 2 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Picking up a paper clip with a magnet is a physical change. The paper clip sticks to the magnet, but it is still made of the same type of matter.
Breaking a ceramic plate is a physical change. The plate gets broken into pieces. But each piece is still made of the same type of matter.
St... | |
Which continent is highlighted? | [
"Antarctica",
"Europe",
"North America",
"Australia"
] | 1 | closed choice | grade8 | 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 property do these three objects have in common? | [
"sweet",
"fuzzy",
"blue"
] | 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.
Blue is a color.
This color is blue. The blueberry is blue, but the caramel corn and the chocolate syrup are not.
Sugar has a sweet taste. All three objects are sweet.
A fuzzy object is covered in soft hair. None of the objects are fuzzy.
The propert... | |
Not supported with pagination yet | Select the plant. | [
"Papyrus has a long thin stem.",
"Wombats eat plants."
] | 0 | closed choice | grade2 | natural science | biology | Classification | Identify plants and animals | Plants and animals are living things. Living things are called organisms.
Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can.
Animals also come in many shapes and sizes. Most animals can move around. A... | Papyrus is a plant. It has a long thin stem with green leaves on top.
You can make paper out of the stems of papyrus plants!
A wombat is an animal. It eats plants.
Wombats have strong claws. They use their claws to dig tunnels called burrows. | |
Not supported with pagination yet | Which is a complex sentence? | [
"The package includes some old letters from my grandma to my dad and a broken pocket watch.",
"Air will leak out of the tire until you find the hole and repair it."
] | 1 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple, compound, or complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
aft... | The second sentence is the complex sentence. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction until.
Air will leak out of the tire until you find the hole and repair it. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
distinct - dreadful | [
"dare",
"donkey"
] | 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 donkey is between the guide words distinct - dreadful, it would be found on that page. | |
Not supported with pagination yet | Complete the sentence.
Dew appearing on grass in the morning is a (). | [
"chemical change",
"physical change"
] | 1 | closed choice | grade5 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form new molecules. The types of molecules in matter before an... | Dew appearing on grass in the morning is a change of state. So, it is a physical change. Water vapor in the air touches the cool grass and becomes liquid.
The water vapor changes state to become dew, but it is still made of water. A different type of matter is not formed. | |
Which of the following organisms is the tertiary consumer in this food web? | [
"sea otter",
"sea urchin",
"phytoplankton",
"kelp bass"
] | 3 | Below is a food web from an ocean ecosystem in Monterey Bay, off the coast of California.
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 | grade8 | 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... | Tertiary consumers eat secondary consumers. So, in a food web, tertiary consumers have arrows pointing to them from secondary consumers. Secondary consumers have arrows pointing to them from primary consumers. And primary consumers have arrows pointing to them from producers.
The sea otter has an arrow pointing to it f... | |
Which continent is highlighted? | [
"Europe",
"Australia",
"Africa",
"South America"
] | 0 | closed choice | grade5 | social science | geography | Oceans and continents | Identify 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. | ||
Not supported with pagination yet | Which tense does the sentence use?
Cows eat the grass on the hill. | [
"future tense",
"present tense",
"past tense"
] | 1 | closed choice | grade2 | 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 present tense. You can tell because it uses a present-tense verb, eat. The verb tells you about something that is true or happening now. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... | |
Select the reptile below. | [
"Mojave rattlesnake",
"barking tree frog"
] | 0 | Reptiles have scaly, waterproof skin. Most reptiles live on land. A box turtle is an example of a reptile. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A barking tree frog is an amphibian. It has moist skin and begins its life in water.
There are many kinds of tree frogs. Most tree frogs are very small. They can walk on thin branches.
A Mojave rattlesnake is a reptile. It has scaly, waterproof skin.
Rattlesnakes have fangs they can use to inject venom into their prey. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Don't try to tell me that you only watch educational programming, Akira! I know for a fact that your sister only watches reality television. | [
"guilt by association: a negative association intended to discredit someone or something",
"false dichotomy: an argument that presents only two choices when more options exist"
] | 0 | closed choice | grade8 | 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 Akira must watch reality television, because her sister watches reality television. However, even though Akira's sister watches reality television, that doesn't necessarily mean that Akira does, too. This illustrates a type of logical fallacy known as guilt by association. | |
Which property do these three objects have in common? | [
"sour",
"salty",
"shiny"
] | 1 | 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 lemon has a sour taste. The ocean water and the fries are not sour.
Potato chips have a salty taste. All three objects are salty.
A shiny object reflects a lot of light. You can usually see your reflection in a shiny object. The ocean water is shin... | |
Which statement best describes the average monthly precipitation in New Orleans? | [
"October is the wettest month.",
"The wettest months of the year are June, July, and August.",
"February is wetter than June."
] | 1 | 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 New Orleans, look at the graph.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Oct" is incorrect.
Choice "October is the wettest month." is incorrect.
Every other month has a higher average precipitation... |
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.