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What can Erin and Harper trade to each get what they want? | [
"Erin can trade her tomatoes for Harper's carrots.",
"Harper can trade her almonds for Erin's tomatoes.",
"Erin can trade her tomatoes for Harper's broccoli.",
"Harper can trade her broccoli for Erin's oranges."
] | 2 | 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.
Erin and Harper open their lunch boxes in the school cafeteria. Neither Erin nor Harper got everything that they wanted. The tabl... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Erin wants broccoli. Harper 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. | ||
Not supported with pagination yet | Which is a simple sentence? | [
"On the ferry to Ellis Island, Katy took a photograph, and now it's sitting in a frame on her dresser at home.",
"The forecast for tomorrow calls for strong winds and light rain."
] | 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 first sentence is the simple sentence. It is a single independent clause.
The forecast for tomorrow calls for strong winds and light rain. | |
Which property do these three objects have in common? | [
"yellow",
"shiny",
"rough"
] | 1 | 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 car bumper and the silver ring are not rough.
Yellow is a color.
This color is yellow. The gold nugget is yellow, but the car bumper and the silver ring are not.
A shiny object reflects a lot of li... | |
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 | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | |
What is the probability that an ornamental gourd plant produced by this cross will be heterozygous for the fruit color gene? | [
"4/4",
"0/4",
"3/4",
"2/4",
"1/4"
] | 3 | In a group of ornamental gourd plants, some individuals have yellow fruit and others have green fruit. In this group, the gene for the fruit color trait has two alleles. The allele for green fruit (f) is recessive to the allele for yellow fruit (F).
This Punnett square shows a cross between two ornamental gourd plants. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | ||
Not supported with pagination yet | Does this passage describe the weather or the climate?
Arianna put on an extra pair of socks this morning because it was so cold. | [
"climate",
"weather"
] | 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.
Arianna put on an extra pair of socks this morning because it was so cold.
This passage tells you about the temperature this morning where Arianna lives. It describes the atmosphere at a certain place and time. So, this passage describes the weather. | |
Not supported with pagination yet | Which correctly shows the title of a song? | [
"If You're Happy and You Know It",
"\"If You're Happy and You Know It\""
] | 1 | closed choice | grade6 | 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, article, or short story should be in quotation marks.
"You Are My Sunshine" | A song should be in quotation marks.
The correct title is "If You're Happy and You Know It." | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Jenny has a scar on her right leg. | [
"acquired",
"inherited"
] | 0 | Hint: Most scars are caused by accidents during a person's life. | 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... | Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait. |
Not supported with pagination yet | Would you find the word appoint on a dictionary page with the following guide words?
anxious - ask | [
"yes",
"no"
] | 0 | yes or no | grade5 | 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 appoint is between the guide words anxious - ask, it would be found on that page. | |
Which solution has a higher concentration of blue particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | grade7 | 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 blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... | |
Which animal is also adapted for flight? | [
"brahminy kite",
"three-toed sloth"
] | 0 | A has wings instead of arms. It is adapted for flight. Albatrosses fly long distances in search of food.
Figure: gray-headed albatross. | 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 gray-headed albatross.
The gray-headed albatross has long, powerful wings. It is adapted for flight. Long, powerful wings help the gray-headed albatross travel long distances by air.
Now look at each animal. Figure out which animal has a similar adaptation.
The brahminy kite has long, powerfu... | |
Complete the statement.
Hydrogen peroxide is (). | [
"an elementary substance",
"a compound"
] | 1 | The model below represents a molecule of hydrogen peroxide. Hydrogen peroxide can be used to kill bacteria on medical tools. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify 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 ... | Use the model to determine whether hydrogen peroxide is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the c... | |
Not supported with pagination yet | What is the volume of a coffee pot? | [
"11 gallons",
"11 fluid ounces",
"11 cups"
] | 2 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary 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 customary units, volume may be written in units of fluid ounces, cups,... | The best estimate for the volume of a coffee pot is 11 cups.
11 fluid ounces is too little and 11 gallons is too much. |
Not supported with pagination yet | Select the bird. | [
"brown pelican",
"spotted dolphin",
"zebra",
"great white shark"
] | 0 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds have feathers, two wings, and a beak. | A brown pelican is a bird. It has feathers, two wings, and a beak.
Brown pelicans live near water. They can dive underwater to catch fish.
A spotted dolphin is a mammal. It has hair and feeds its young milk.
Dolphins may look like sharks or other fish, but they are mammals! When a baby dolphin is born, it has hair arou... | |
Based on the definition of the "Columbian Exchange" above, which arrow could show a part of the Columbian Exchange? | [
"1",
"4",
"3"
] | 2 | In the following questions, you will learn about the Columbian Exchange. Historians use the term "Columbian Exchange" to describe the movement of diseases, animals, plants, people, and resources between the Americas and the rest of the world.
The map below shows different routes around the world. Look at the map. Then ... | closed choice | grade8 | social science | world-history | Age of Exploration | The Columbian Exchange | Remember that the term "Columbian Exchange" describes diseases, animals, plants, people, and resources traveling between the Americas and the rest of the world.
Look back at the map legend. The map legend shows that "the Americas" includes North America and South America.
So, these choices are correct:
These choices ar... | ||
Not supported with pagination yet | Select the one true statement. | [
"The cell membrane of an animal cell contains the master plan for cell activities and cell development.",
"The cytoplasm of a plant cell is inside the cell membrane.",
"Animal cells can have lysosomes but do not have vacuoles."
] | 1 | closed choice | grade8 | natural science | biology | Cells | Compare cells and cell parts | |||
Not supported with pagination yet | Read the following text from a student essay. How can the writer best improve his or her organization?
In the 1800s, egrets were hunted in the United States for their long white plumes (feathers). As a result, the birds were nearly wiped out completely. Thankfully, conservation measures were put in place, and the birds... | [
"by providing the description of egrets when they are first introduced",
"by removing the sentence about the egrets' expanded range"
] | 0 | closed choice | grade6 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | When you review a fellow student's writing, try to make your feedback clear and specific. You can use questions such as the following to guide your feedback:
Ideas and development: Does the writer express a clear main idea and develop it with evidence, examples, and analysis?
Organization: Does the writer order ideas i... | The writer could best improve his or her organization by providing the description of egrets when they are first introduced.
For example, the writer could move the underlined text to the beginning of the paragraph.
In the 1800 s, egrets were hunted in the United States for their long white plumes (feathers). As a resul... | |
What is the capital of Wyoming? | [
"Kansas City",
"Cheyenne",
"Baton Rouge",
"Sacramento"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Cheyenne is the capital of Wyoming. | |||
Which of the following statements is true? | [
"Genes are passed down from parents to offspring.",
"Eye color is an example of a gene."
] | 0 | Look at the image and read the text. Then, answer the question.
variation in the human eye color trait
All organisms inherit certain traits from their parents. Information about these inherited traits is found in genes. Genes are pieces of hereditary material that are passed from parents to offspring. An organism's gen... | closed choice | grade7 | natural science | biology | Genes to traits | Genes, proteins, and traits: understanding the genetic code | Genes affect traits.
Genes contain information about inherited traits.
All organisms have genes.
All organisms have genes that contain information about their inherited traits.
Genes are passed down from parents to offspring.
When an organism reproduces, it passes copies of its genes to its offspring. This is how infor... | ||
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 smaller in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 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 shapes. | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | |
Not supported with pagination yet | Select the mammal. | [
"Banggai cardinalfish",
"green moray eel",
"rabbit",
"arroyo toad"
] | 2 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Mammals have hair or fur and feed their young milk. | A green moray eel is a fish. It lives underwater. It has fins, not limbs.
Eels are long and thin. They may have small fins. They look like snakes, but they are fish!
An arroyo 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 rabbit is a mamm... | |
Not supported with pagination yet | Complete the statement. Assume that the sled's mass did not change.
The gravitational potential energy stored between the sled and Earth () as Susan rode down the hill. | [
"stayed the same",
"increased",
"decreased"
] | 2 | Read the text about an object in motion.
On a snowy day, Susan rode her sled down a big hill. | closed choice | grade6 | natural science | physics | Kinetic and potential energy | Identify changes in gravitational potential energy | Gravitational potential energy is stored between any two objects. So, for every object on or near Earth, there is gravitational potential energy stored between the object and Earth.
The amount of gravitational potential energy stored between an object and Earth depends on the mass of the object. The amount of gravitati... | Think about how the distance between the sled and the center of Earth changed.
The bottom of the hill was lower than the point where Susan started sledding. As Susan rode toward the bottom of the hill, the distance between the sled and the center of Earth decreased. So, the gravitational potential energy stored between... |
Not supported with pagination yet | What is the volume of a coffee pot? | [
"14 gallons",
"14 cups",
"14 fluid ounces"
] | 1 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary 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 customary units, volume may be written in units of fluid ounces, cups,... | The best estimate for the volume of a coffee pot is 14 cups.
14 fluid ounces is too little and 14 gallons is too much. |
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,... | Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1. | |
Not supported with pagination yet | Based on this information, what is this plant's phenotype for the flower form trait? | [
"single flowers",
"double flowers"
] | 0 | This passage describes the flower form trait in rose plants:
In a group of rose plants, some individuals have double flowers and others have single flowers. In this group, the gene for the flower form trait has two alleles. The allele for single flowers (f) is recessive to the allele for double flowers (F).
A certain ... | closed choice | grade8 | 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 rose plant's genotype for the flower form gene is ff. The rose plant's genotype of ff has only f alleles. The f allele is for single flowers. So, the rose plant's phenotype for the flower form trait must be single flowers.
To check this answer, consider whether the rose plant's alleles are dominant or recessive. Th... |
Not supported with pagination yet | What do these two changes have in common?
a sidewalk heating up in the sun
pouring milk on oatmeal | [
"Both are caused by cooling.",
"Both are chemical changes.",
"Both are caused by heating.",
"Both are only physical changes."
] | 3 | closed choice | grade3 | 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 sidewalk heating up in the sun is a physical change. The temperature of the sidewalk goes up, but the sidewalk is still made of the same type of matter.
Pouring milk on oatmeal is a physical change. The oatmeal and milk form a creamy mixture. But making this mixture does not form a di... | |
Is the following statement about our solar system true or false?
Earth is the largest planet that is made mainly of rock. | [
"true",
"false"
] | 0 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | The table tells you that Mercury, Venus, Earth, and Mars are the planets made mainly of rock. Of these planets, Earth is the largest. So, Earth is the largest planet that is made mainly of rock. | |
Not supported with pagination yet | What does the simile in this text suggest?
Monica rubbed coconut oil on her hands, which were like the parched earth during a drought. | [
"Monica's hands were dry and cracked.",
"Monica's hands were hot."
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Interpret the figure 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 like the parched earth during a drought suggests that Monica's hands were dry and cracked. A drought is a period without rain; the ground during a drought can become hard and cracked. | |
Not supported with pagination yet | Which text uses the word nauseous in its traditional sense? | [
"Everyone seemed to enjoy the magnolia-scented candle, but it made Marco feel rather nauseous.",
"Everyone seemed to enjoy the magnolia-scented candle, but Marco found the smell rather nauseous."
] | 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 nauseous in its traditional sense: causing disgust or nausea.
Everyone seemed to enjoy the magnolia-scented candle, but Marco found the smell rather nauseous.
The first text uses nauseous in its nontraditional sense: feeling disgusted or nauseated.
Everyone seemed to enjoy the magnolia-scented cand... | |
Which animal's mouth is also adapted to tear through meat? | [
"leopard",
"tamandua"
] | 0 | Cougars are carnivores, or meat eaters. They eat mammals such as deer and rabbits. The 's mouth is adapted to tear through meat.
Figure: cougar. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | 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 mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the cougar.
The cougar has a large mouth and sharp teeth. Its mouth is adapted to tear through meat. The cougar uses its large mouth to grab its prey. It uses its sharp teeth to cut up the meat of the prey into pieces it can swallow.
Now look at each animal. Figure out which animal has a similar ... | |
What is the capital of Alaska? | [
"Fairbanks",
"Frankfort",
"Anchorage",
"Juneau"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Juneau is the capital of Alaska. | |||
Which statement describes the Taklamakan Desert ecosystem? | [
"It has a small amount of rain or snow.",
"It has a medium amount of rain.",
"It has year-round snow."
] | 0 | Figure: Taklamakan Desert.
The Taklamakan Desert is a cold desert ecosystem in northwestern China. Towns in this desert were stops along the Silk Road, a historical trade route between China and eastern Europe. | closed choice | grade8 | 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 cold desert is a type of ecosystem. Cold deserts have the following features: a small amount of rain or snow, dry, thin soil, and long, cold winters. So, the following statement describes the Taklamakan Desert ecosystem: a small amount of rain or snow, dry, thin soil, and long, cold winters. It has a small amount of ... | |
What can Ben and Darnell trade to each get what they want? | [
"Darnell can trade his almonds for Ben's tomatoes.",
"Ben can trade his tomatoes for Darnell's sandwich.",
"Ben can trade his tomatoes for Darnell's broccoli.",
"Darnell can trade his broccoli for Ben's oranges."
] | 2 | 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.
Ben and Darnell open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Ben wanted broc... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Ben wanted broccoli in his lunch and Darnell was hoping for tomatoes. Look at the labeled part of the images.
Ben has tomatoes. Darnell 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. | ||
Identify the question that Josiah's experiment can best answer. | [
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?",
"Can pennies hold more drops of pure water or water mixed with hand soap?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Josiah used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Josiah recorded the number of drops he could add before the ... | closed choice | grade6 | 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 capital of Wisconsin? | [
"Des Moines",
"Madison",
"Milwaukee",
"Charleston"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Madison is the capital of Wisconsin. | |||
Not supported with pagination yet | Which object has more thermal energy? | [
"a 150-gram glass of water at a temperature of 85°F",
"a 150-gram glass of water at a temperature of 40°F"
] | 0 | 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 move faster, the temperature goes up. The matter now has both ... | The two glasses of water have the same mass but different temperatures. Since the 85°F glass of water is hotter than the 40°F glass of water, it has more thermal energy. |
Not supported with pagination yet | Would you find the word tame on a dictionary page with the following guide words?
thief - tortillas | [
"no",
"yes"
] | 0 | yes or no | 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 tame is not between the guide words thief - tortillas, it would not be found on that page. | |
Not supported with pagination yet | What does the euphemism in this text suggest?
Tiana is between jobs right now, so she's selling some of her old jewelry to help pay the bills. | [
"Tiana is unemployed.",
"Tiana is short on cash."
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Interpret the figure 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 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. | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The euphemism between jobs means that Tiana is unemployed. | |
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 A",
"sample B"
] | 2 | 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 | How long is a pen? | [
"6 inches",
"6 yards"
] | 0 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that a pencil is 8 long. You might be thinking, 8 what? Is the pencil 8 inches long? 8 feet? 8 miles?
The number 8 on its own does not give you much information about the len... | The better estimate for the length of a pen is 6 inches.
6 yards is too long. |
Not supported with pagination yet | Which bowl of cereal has a lower temperature? | [
"the bowl of cereal with less thermal energy",
"the bowl of cereal with more thermal energy"
] | 0 | Two bowls of cereal are identical except for their thermal energies. | closed choice | grade5 | natural science | physics | Heat and 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 bowls of cereal are made of the same material and have the same mass. So, the bowl of cereal with less thermal energy has a lower temperature. |
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 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater 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, 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,... | Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is greater in Pair 1 than in Pair 2. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Porter remarked that the new book on anti-gravity was impossible to put down. | [
"allusion",
"pun"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures 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.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses a pun, a word or phrase that humorously suggests more than one meaning.
Impossible to put down means that the book is so good that it is hard to stop reading. The phrase impossible to put down is also a joke about anti-gravity: if gravity pulls things down, perhaps anti-gravity does the opposite and makes... | |
Not supported with pagination yet | Which is the stickiest? | [
"book",
"steel beam",
"syrup"
] | 2 | 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 syrup is the stickiest. If you touch syrup, it will stick to you. | |
Which of these states is farthest west? | [
"Michigan",
"Utah",
"Maine",
"Rhode Island"
] | 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 west arrow is pointing. Utah is farthest west. | ||
Not supported with pagination yet | Which figure of speech is used in this text?
Dr. Duran is unhappy with her new assistant because simple tasks, like fetching coffee, take him years to finish. | [
"euphemism",
"hyperbole"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures 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 hyperbole, an obvious exaggeration that is not meant to be taken literally.
Take him years to finish is an exaggeration, since it probably does not take him entire years to fetch coffee. | |
Which property do these four objects have in common? | [
"sticky",
"stretchy",
"transparent"
] | 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 stretchy object gets longer when you pull on it. All four objects are stretchy.
You can see clearly through a transparent object. The helium balloons, the rubber band, and the melted marshmallow are not transparent.
A sticky object can attach or st... | |
During this time, thermal energy was transferred from () to (). | [
"the surroundings . . . each cake",
"each cake . . . the surroundings"
] | 1 | Lester baked two identical cakes. When he took them out of the oven, he left one cake in its pan and took the other cake out of its pan to put it on a plate. This table shows how the temperature of each cake changed over 5minutes. | 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 cake decreased, which means that the thermal energy of each cake decreased. So, thermal energy was transferred from each cake to the surroundings. | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"After Anna separated the walnuts from the shells, she placed them in a wooden bowl.",
"Anna placed the walnuts in a wooden bowl after she separated them from the shells."
] | 0 | closed choice | grade7 | language science | writing-strategies | Pronouns and antecedents | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun them could refer to the walnuts or the shells.
After Anna separated the walnuts from the shells, she placed them in a wooden bowl.
The second answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so ... | |
Not supported with pagination yet | Which phrase has a more positive connotation? | [
"a willful attitude",
"a resolute attitude"
] | 1 | closed choice | grade6 | 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... | A resolute attitude has a more positive connotation. Resolute and willful both denote being determined. However, resolute suggests acting with conviction and dedication, while willful suggests being disobedient. | |
In this food chain, the skunk is a consumer. Why? | [
"It makes its own food.",
"It eats another organism."
] | 1 | This diagram shows a food chain from a forest ecosystem in Virginia. | closed choice | grade4 | natural science | biology | Ecosystems | Identify roles in food chains | Every organism needs food to stay alive. Organisms get their food in different ways. A food chain shows how organisms in an ecosystem get their food.
Producers make their own food. Many producers use carbon dioxide, water, and sunlight to make sugar. This sugar is food for the producer.
Consumers eat other organisms. C... | In this food chain, the skunk is a consumer because it eats another organism. The skunk in this food chain eats the persimmon. | |
In this food web, which organism contains matter that eventually moves to the mushroom? | [
"lichen",
"collared lemming"
] | 0 | 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 | grade5 | natural science | biology | Ecosystems | 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 to the mushroom.
Arrows point from the collared lemming to the earthworm and the Arctic fox. The only arrow pointing from the Arctic fox leads to the earthworm. No arrows point from the earthworm to any... | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Your niece,\nErin",
"Your Niece,\nErin"
] | 0 | closed choice | grade4 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Which is this organism's common name? | [
"Danaus plexippus",
"monarch butterfly"
] | 1 | This organism is Danaus plexippus. It is also called a monarch butterfly. | 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,... | Danaus plexippus is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Danaus plexippus is the organism's scientific name. So, you know that monarch butterfly is the common name. | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Grandpa Brian,",
"Dear grandpa brian,"
] | 0 | closed choice | grade3 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The first greeting is correct:
Its first word is capitalized, and it ends with a comma. Grandpa Brian is capitalized because it is a proper noun. | |
Not supported with pagination yet | What do these two changes have in common?
an old sandwich rotting in a trashcan
chicken cooking in an oven | [
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are caused by heating."
] | 0 | 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 sandwich rotting is a chemical change. The matter in the sandwich breaks down and slowly turns into a different type of matter.
Cooking chicken is a chemical change. The heat causes the matter in the chicken to change. Cooked chicken and raw chicken are different types of matter.
Step... | |
Not supported with pagination yet | Which correctly shows the title of a movie? | [
"Nothing but Net",
"nothing but Net"
] | 0 | closed choice | grade4 | language science | capitalization | Formatting | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The word but is not important, so it should not be capitalized.
The correct title is Nothing but Net. | |
Not supported with pagination yet | Complete the sentence.
John Deere was a famous (). | [
"inventor",
"pilot",
"astronaut",
"writer"
] | 0 | closed choice | grade2 | social science | us-history | Historical figures | John Deere | John Deere was a famous American inventor. An inventor is someone who comes up with items or ideas that have never been made before.
John Deere was born in 1804. | ||
Is the following statement about our solar system true or false?
The volume of Mars is more than ten times as large as Mercury's. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To determine if this statement is true, calculate the value of ten times the volume of Mercury.
Then compare the result to the volume of Mars. The volume of Mars is 1.63 x 10^11 km^3, which is less than 6.08 x 10^11 km^3. So, the volume of Mars is less than ten times as large as Mercury's. | |
Not supported with pagination yet | What does the allusion in this text suggest?
With the gutters clogged and water rising in the streets, Christina, who was watching the storm from her window, commented, "We're going to need an ark to get out of here." | [
"Christina thinks the storm will cause major flooding.",
"Christina plans to build a boat."
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Interpret the figure 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 to an ark suggests that Christina thinks the storm will cause major flooding. In the Bible, it rains for forty days and forty nights; Noah, his family, and animals of every species survive the great flood in an ark that he bui... | |
Not supported with pagination yet | Select the reptile. | [
"hippopotamus",
"emerald tree boa",
"gray wolf",
"elephant seal"
] | 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. | An emerald tree boa is a reptile. It has scaly, waterproof skin.
Tree boas eat small mammals, birds, lizards, and frogs. Tree boas only need to eat once every few months!
A gray wolf is a mammal. It has fur and feeds its young milk.
Wolves often live in family groups. A wolf mother, father, and their children travel to... | |
Which country is highlighted? | [
"Fiji",
"Kiribati",
"Tuvalu",
"Tonga"
] | 2 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | |||
Not supported with pagination yet | Compare the motion of three cars. Which car was moving at the lowest speed? | [
"a car that moved 525kilometers east in 10hours",
"a car that moved 1,025kilometers south in 10hours",
"a car that moved 360kilometers west in 10hours"
] | 2 | 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 car moved and the time it took to move that distance. The direction each car moved does not affect its speed.
Notice that each car moved for 10 hours. The car that moved 360 kilometers moved the shortest distance in that time. So, that car must have moved at the lowest speed. | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"If Eve's skirt doesn't match the blouse, she will have to exchange the blouse for another item.",
"If Eve's skirt doesn't match the blouse, she will have to exchange it for another item."
] | 1 | closed choice | grade10 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun it could refer to Eve's skirt or the blouse.
The second answer choice shows a possible correction for the vague pronoun reference. It has been replaced with the blouse.
If Eve's skirt doesn't match the blouse, she will have to exchange the blouse f... | |
What is the probability that a watermelon plant produced by this cross will be heterozygous for the ground spot color gene? | [
"1/4",
"3/4",
"0/4",
"2/4",
"4/4"
] | 3 | This passage describes the ground spot color trait in watermelon plants:
Watermelon plants grow with their fruit resting on the ground. Over time, the bottom of each fruit develops a white or yellow spot called a ground spot. In some types of watermelon plants, the color of the ground spot is an inherited trait.
In a g... | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | ||
Not supported with pagination yet | Does the sentence use a simile or a metaphor?
Philip swam with ease across the swimming pool, like a dolphin. | [
"metaphor",
"simile"
] | 1 | closed choice | grade5 | language science | figurative-language | Literary devices | Identify similes and metaphors | Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A che... | Philip swam with ease across the swimming pool, like a dolphin.
The words Philip and dolphin are compared using the word like. So, the sentence uses a simile. | |
Not supported with pagination yet | How long is a basketball court? | [
"22 kilometers",
"22 meters"
] | 1 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that a pencil is 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers?
The number 16 on its own does not give you much informa... | The better estimate for the length of a basketball court is 22 meters.
22 kilometers is too long. |
Not supported with pagination yet | Which would stretch the most? | [
"cobalt",
"rubber toy",
"aluminum foil"
] | 1 | 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... | Stretchy is a property. A stretchy material gets longer when you pull on it.
Look at each picture, one at a time. Imagine pulling on the material shown in each picture.
Of the choices, the rubber toy would stretch the most. If you pull on the arms of a rubber stretch toy, they will get longer. | |
Not supported with pagination yet | Select the solid. | [
"milk",
"water in a fishbowl",
"rain puddle",
"beans"
] | 3 | closed choice | grade3 | natural science | physics | States of matter | Identify solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | The water in a fishbowl is a liquid. A liquid takes the shape of any container it is in. If you pour water from a fishbowl into a different container, the water will take the shape of that container. But the water will still take up the same amount of space.
Milk is a liquid. A liquid takes the shape of any container i... | |
Which ocean is highlighted? | [
"the Indian Ocean",
"the Arctic Ocean",
"the Pacific Ocean",
"the Atlantic Ocean"
] | 3 | closed choice | grade7 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Atlantic Ocean. | ||
Not supported with pagination yet | What kind of sentence is this?
Rosa put a bandage on my cut. | [
"declarative",
"exclamatory"
] | 0 | closed choice | grade5 | 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, and it ends with a period. It is a declarative sentence. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Strips of tinfoil winking like people . . .
—Sylvia Plath, "The Bee Meeting" | [
"apostrophe",
"assonance"
] | 1 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | 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 assonance, the repetition of a vowel sound in a series of nearby words.
The words strips, tinfoil, and winking share a vowel sound. | |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade3 | 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 north pole of one magnet is closest to the south pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Which figure of speech is used in this text?
At twenty-one, Darnel felt overwhelmed with adult responsibilities and wished he could fly off to Neverland. | [
"onomatopoeia",
"allusion"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures 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.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses an allusion, a brief reference to someone or something well known.
Neverland alludes to the story of Peter Pan, a boy who lived in Neverland and never grew up. | |
Select the organism in the same genus as the axolotl. | [
"Ambystoma texanum",
"Hyla versicolor",
"Tigrisoma mexicanum"
] | 0 | This organism is an axolotl. Its scientific name is Ambystoma mexicanum. | closed choice | grade5 | natural science | biology | 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 axolotl's scientific name is Ambystoma mexicanum. The first word of its scientific name is Ambystoma.
Tigrisoma mexicanum and Ambystoma mexicanum are not in the same genus.
These organisms are not in the same genus, but part of their scientific names is the same. Tigrisoma mexicanum and Ambystoma mexicanum have the ... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
whittle - women | [
"widow",
"wares"
] | 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 widow is between the guide words whittle - women, it would be found on that page. | |
Which continent is highlighted? | [
"Australia",
"Europe",
"Africa",
"South America"
] | 3 | 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 South America. | ||
Not supported with pagination yet | Which is a complex sentence? | [
"If you thought that dish was spicy, this dish will set your mouth on fire.",
"Avalanches can reach speeds of eighty miles per hour within five seconds."
] | 0 | 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 if.
If you thought that dish was spicy, this dish will set your mouth on fire. | |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Nassau.
Nassau, a city in the Bahamas, has many tourists each winter. On Tuesday, it was too humid for some tourists.
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 | 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.
Nassau, a city in the Bahamas, has many tourists each winter. On Tuesday, it was too humid for some tourists.
The underlined part of the passage tells you about the humidity in Nassau on Tuesday. This passage describes the atmosphere at a certain place and time. So, this passage describes th... | |
Not supported with pagination yet | In 1940, scientists invented a new form of synthetic, or artificial, rubber. It was cheaper to work with than natural rubber. What happened to the overall supply of rubber tires after 1940? | [
"The supply went down.",
"The supply 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... | Rubber is a resource used to make tires. Synthetic rubber is cheaper to work with than natural rubber.
When synthetic rubber was invented, rubber tires became cheaper to make. Producers could make more synthetic rubber tires for the same cost. So, the supply of rubber tires went up. | |
Which ocean is highlighted? | [
"the Pacific Ocean",
"the Indian Ocean",
"the Atlantic Ocean",
"the Southern Ocean"
] | 2 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Atlantic Ocean. | ||
Not supported with pagination yet | Which bath towel has a higher temperature? | [
"the bath towel with more thermal energy",
"the bath towel with less thermal energy"
] | 0 | Two 475-gram bath towels 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 bath towels are made of the same material and have the same mass. So, the bath towel with more thermal energy has a higher temperature. |
What is the name of the colony shown? | [
"Rhode Island",
"North Carolina",
"Pennsylvania",
"Florida"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Pennsylvania. | |||
What is the capital of Nevada? | [
"Las Vegas",
"Cheyenne",
"Carson City",
"Little Rock"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Carson City is the capital of Nevada. | |||
Which solution has a higher concentration of blue particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 0 | The diagram below is a model of two solutions. Each blue 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 blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... | |
Not supported with pagination yet | Based on this information, what is Dallas's phenotype for the coat color trait? | [
"a red coat",
"a black coat"
] | 1 | In a group of cows, some individuals have a black coat and others have a red coat. In this group, the gene for the coat color trait has two alleles. The allele for a red coat (l) is recessive to the allele for a black coat (L).
Dallas is a cow from this group. Dallas has the heterozygous genotype Ll for the coat color ... | closed choice | grade6 | 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 ... | You need to determine Dallas's phenotype for the coat color trait. First, consider the alleles in Dallas's genotype for the coat color gene. Then, decide whether these alleles are dominant or recessive.
The allele for a red coat (l) is recessive to the allele for a black coat (L). This means L is a dominant allele, and... |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Tower of David.
The Tower of David is in the Old City of Jerusalem. Visitors at the tower noticed that the wind suddenly shifted direction early this afternoon.
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 | 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 Tower of David is in the Old City of Jerusalem. Visitors at the tower noticed that the wind suddenly shifted direction early this afternoon.
The underlined part of the passage tells you about the wind direction in Jerusalem this afternoon. This passage describes the atmosphere at a certa... | |
Not supported with pagination yet | Is there a sentence fragment?
Even though rainbows often appear to contain a band of purple. It's just an optical illusion. | [
"no",
"yes"
] | 1 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify sentence fragments | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A sentence fragment is a group of words that does not express a complete thought.
Rehearsing daily because we have a concert in two weeks.
This fragment is missing a subjec... | There is a sentence fragment that does not express a complete thought.
Even though rainbows often appear to contain a band of purple. It's just an optical illusion.
Here is one way to fix the sentence fragment:
Even though rainbows often appear to contain a band of purple, it's just an optical illusion. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
I don't trust Professor Silva's findings. Another researcher at her university was caught falsifying data. So, it's likely Professor Silva has, too. | [
"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",
"appeal to nature: the assumption that natural things are always good"
] | 0 | 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 Professor Silva's research is untrustworthy because someone else at her university was caught falsifying data. However, this isn't necessarily true. The practices of one researcher at a university do not necessarily reflect the practices of another researcher at the same university. This illustrate... | |
Not supported with pagination yet | Based on this information, what is Smudge's phenotype for the body hair trait? | [
"a hairless body",
"a hairy body"
] | 0 | In a group of cats, 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 hairless body (b) is recessive to the allele for a hairy body (B).
Smudge is a cat from this group. Smudge has the homozygous genotype bb for the body... | closed choice | grade6 | 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 ... | Smudge's genotype for the body hair gene is bb. Smudge's genotype of bb has only b alleles. The b allele is for a hairless body. So, Smudge's phenotype for the body hair trait must be a hairless body.
To check this answer, consider whether Smudge's alleles are dominant or recessive. The allele for a hairless body (b) i... |
Not supported with pagination yet | Which word does not rhyme? | [
"dull",
"sell",
"tell"
] | 0 | closed choice | grade2 | language science | phonological-awareness | Rhyming | Which word does not rhyme? | Rhyming words are words that end with the same sound.
The words tip and slip rhyme. They both end with the same sound.
The words meet and treat also rhyme. They both end with the same sound, even though the sound has two different spellings.
The words tip and meet don't rhyme. They end with different sounds. | The words sell and tell rhyme. They both end with the ell sound.
The word dull does not rhyme. It ends with a different sound. | |
What is the expected ratio of offspring with a spotted coat to offspring with a black coat? Choose the most likely ratio. | [
"0:4",
"3:1",
"1:3",
"2:2",
"4:0"
] | 1 | In a group of leopards, some individuals have a spotted coat and others have a black coat. In this group, the gene for the coat pattern trait has two alleles. The allele for a black coat (a) is recessive to the allele for a spotted coat (A).
This Punnett square shows a cross between two leopards. | 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 a spotted coat or a black coat, consider whether each phenotype is the dominant or recessive allele's version of the coat pattern trait. The question tells you that the a allele, which is for a black coat, is recessive to the A allele, which is ... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | 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 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. | |
Which of the following could Kamal's test show? | [
"which design would have the least traffic noise in the concert area",
"which design would have the greatest distance between the concert area and the road",
"if at least 20% of the park would be shaded by trees in each design"
] | 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 of these states is farthest north? | [
"Rhode Island",
"Louisiana",
"Oklahoma",
"South Carolina"
] | 0 | 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 north arrow is pointing. Rhode Island is farthest north. | ||
Which is this organism's scientific name? | [
"blue jay",
"Cyanocitta cristata"
] | 1 | This organism is Cyanocitta cristata. It is also called a blue jay. | 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,... | Cyanocitta cristata is written in italics. The first word is capitalized, and the second word is not.
So, Cyanocitta cristata is the scientific name. | |
Not supported with pagination yet | Using only these supplies, which question can Kiara investigate with an experiment? | [
"Do small rocks or large rocks skip more times when thrown across the river?",
"Do round rocks or flat rocks skip more times when thrown across the river?",
"Do rocks skip more times when thrown across a river or across a pond?"
] | 0 | Kiara likes to skip rocks at the river. She notices that some of the rocks she throws skip off the surface of the water many times, while others skip once and then sink. She wonders what factors affect how well rocks skip on the water. So, she decides to design an experiment. She has the following supplies available:
1... | closed choice | grade6 | 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... | |
Not supported with pagination yet | Suppose Latrell decides to see the crocodiles. Which result would be a cost? | [
"Latrell will spend more time walking to the crocodiles. They are on the other side of the zoo, but the grizzly bears are close by.",
"Latrell will enjoy seeing the crocodiles more than he would have enjoyed seeing the grizzly bears."
] | 0 | Latrell is deciding whether to see the crocodiles or the grizzly bears at the zoo. He wants to see lots of animals, but the zoo is closing soon. | closed choice | grade5 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Latrell wants or needs:
Latrell will spend more time walking to the crocodiles. They are on the other side of the zoo, but the grizzly bears are close by. |
Not supported with pagination yet | Is the following trait inherited or acquired?
Franklin can ride a motorcycle. | [
"inherited",
"acquired"
] | 1 | closed choice | grade5 | 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 ride a motorcycle. Instead, many people learn how to ride. So, riding a motorcycle is an acquired trait. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Kendra's phone slipped out of her pocket, landing in the toilet with a plop. | [
"onomatopoeia",
"verbal irony"
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures 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.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses onomatopoeia, a word that expresses a sound.
Plop represents the sound of the phone landing in the toilet. |
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.