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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 | Using only these supplies, which question can Cassie investigate with an experiment? | [
"Do candles with thick wicks or with thin wicks produce more smoke?",
"Do large candles or small candles produce more smoke?",
"Do scented candles or unscented candles produce more smoke?"
] | 0 | Cassie is burning some new candles. She notices that they produce different amounts of smoke. She wonders what factors affect how much smoke a candle produces. So, she decides to design an experiment. She has the following supplies available:
two large unscented candles with thick wicks
two large unscented candles with... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Which of these states is farthest south? | [
"Nevada",
"Washington",
"New York",
"South Dakota"
] | 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. Nevada is farthest south. | ||
Not supported with pagination yet | Is this a run-on sentence?
A helium-filled balloon called the Double Eagle II completed the first transatlantic balloon flight in history in 1978, it landed in a barley field near Paris about 140 hours after lifting off from Presque Isle, Maine. | [
"no",
"yes"
] | 1 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify run-on sentences | 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 run-on sentence is formed when two sentences are run together, joined by just a comma or by no punctuation at all. If only a comma is used, the run-on is called a comma s... | This is a run-on sentence. It is a comma splice formed from two sentences run together, joined by just a comma.
A helium-filled balloon called the Double Eagle II completed the first transatlantic balloon flight in history in 1978, it landed in a barley field near Paris about 140 hours after lifting off from Presque Is... | |
Not supported with pagination yet | Suppose Andrew decides to buy a copy of the book. Which result would be a cost? | [
"Andrew will spend money to buy the book.",
"Andrew will get to keep the book as long as he wants."
] | 0 | Andrew is deciding whether to buy a copy of a book or borrow it from the library. He would like to be able to keep the book as long as he wants, but buying the book would cost money. He could borrow the book for free, but he would have to return it in a few weeks. | 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 Andrew wants or needs:
Andrew will spend money to buy the book. |
Not supported with pagination yet | Which tense does the sentence use?
The woman hammers the nails. | [
"present tense",
"past tense",
"future tense"
] | 0 | closed choice | grade3 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, hammers. The verb ends in -s and tells you about something that is true or happening now. | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Mr. Carson,",
"Dear Mr. carson,"
] | 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. Mr. Carson is capitalized because it is a proper noun. | |
Not supported with pagination yet | Assume all other forces on the television are balanced. Which statement describes the forces on the television? | [
"The forces are unbalanced, so there is a net force on the television.",
"The forces are balanced, so there is no net force on the television."
] | 1 | Luke is trying to lift a heavy old television. He is pulling up on the television with a force of 500N. Earth's gravity is pulling down on the television with a force of 500N. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Balanced and unbalanced forces | A force is a push or a pull that acts on an object. Every force has a direction and a magnitude, or strength. If two forces act on an object in opposite directions, the forces are called opposing forces.
When opposing forces have the same magnitude, they are balanced. If all the forces on an object are balanced, there ... | To determine if there is a net force on the television, look at the forces:
Luke is pulling the television up with a force of 500 N.
Earth's gravity is pulling the television down with a force of 500 N.
The forces are in opposite directions, and the forces have the same magnitude: 500 N. This means that the forces are ... |
What is the capital of Colorado? | [
"Denver",
"Baltimore",
"Richmond",
"Juneau"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Denver is the capital of Colorado. | |||
Identify the question that Wayne's experiment can best answer. | [
"Do cardinals visit feeders containing sunflower seeds more often than feeders containing flax seeds?",
"Do cardinals eat more seeds per visit from feeders containing sunflower seeds compared to feeders containing flax seeds?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Wayne set up five pairs of platform bird feeders around his yard. He filled one feeder in each pair with sunflower seeds and the other feeder with flax seeds. For one week, Wayne watched cardinals visiting the feeders d... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Is the following statement true or false?
An animal cell has a cell wall. | [
"true",
"false"
] | 1 | true-or false | grade4 | natural science | biology | Cells | Cell part functions: true or false | An animal cell has a cell wall.
This statement is false. A plant cell has a cell wall, but an animal cell does not. The cell wall gives a plant cell its fixed shape. Most animal cells do not have a fixed shape. | ||
Not supported with pagination yet | Ethan starts to pull the wagon across the yard. To move the wagon at the same speed each time, which friend does Ethan need to pull with a larger force? | [
"a friend who weighs 21 pounds",
"a friend who weighs 28 pounds"
] | 1 | Ethan gives two friends a ride in his wagon. One friend sits in the wagon at a time. | closed choice | grade2 | natural science | physics | Force and motion | How do mass and force affect motion? | A force is a push or a pull.
A force can make an object start moving or stop an object that is moving. A force can also make an object speed up, slow down, or change direction.
Forces can be different sizes.
Think about trying to move a heavy object and a light object. Imagine you want to move them at the same speed. Y... | Look for the friend who is heavier.
A friend who weighs 28 pounds is heavier than a friend who weighs 21 pounds. So, to move the wagon at the same speed each time, Ethan needs to use a larger force to start moving the wagon with a friend who weighs 28 pounds. |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"neither; the samples have the same temperature",
"sample A"
] | 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 sample A has more mass than each particle in sample B. The particles in sample A also have a higher average speed than the particles 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 ... | |
What is the capital of Indiana? | [
"Fort Wayne",
"Providence",
"Montpelier",
"Indianapolis"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Indianapolis is the capital of Indiana. | |||
Not supported with pagination yet | Is the following trait inherited or acquired?
Melissa plays basketball. | [
"acquired",
"inherited"
] | 0 | Hint: Playing basketball takes practice. | closed choice | grade4 | natural science | biology | Traits and heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | People are not born knowing how to play basketball. Instead, some people learn how to play basketball. Playing the sport takes practice. So, playing basketball is an acquired trait. |
What is the name of the colony shown? | [
"New York",
"New Hampshire",
"West Virginia",
"Vermont"
] | 0 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | |||
Which animal's legs are also adapted for wading? | [
"painted stork",
"African penguin"
] | 0 | Great egrets live near marshes, rivers, and lakes. They eat fish, frogs, insects, and small reptiles that live in shallow water. Great egrets hunt their prey by walking through water, or wading.
The 's legs are adapted for wading. They are lightweight and keep the bird's body above the water.
Figure: great egret. | closed choice | grade3 | 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 great egret.
Long legs help the great egret keep its body above the surface of the water while wading. Thin legs are easier to move through the water.
Now look at each animal. Figure out which animal has a similar adaptation.
The painted stork has long, thin legs. Its legs are adapted for wad... | |
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"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade7 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample 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... | |
What can Jonathan and Paula trade to each get what they want? | [
"Paula can trade her almonds for Jonathan's tomatoes.",
"Jonathan can trade his tomatoes for Paula's broccoli.",
"Jonathan can trade his tomatoes for Paula's carrots.",
"Paula can trade her broccoli for Jonathan's oranges."
] | 1 | 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.
Jonathan and Paula open their lunch boxes in the school cafeteria. Neither Jonathan nor Paula got everything that they wanted. Th... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Jonathan wants broccoli. Paula 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. | ||
Is dish soap a solid, a liquid, or a gas? | [
"a solid",
"a gas",
"a liquid"
] | 2 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | 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... | Dish soap is a liquid. A liquid takes the shape of any container it is in.
If you pour dish soap out of a bottle, the dish soap will change shape. But the dish soap will still take up the same amount of space. | ||
Not supported with pagination yet | Which set of instructions is more formal? | [
"Wash hands, utensils, and work surfaces after touching raw meat or poultry.",
"If you're going to be touching raw meat or poultry, you'd better wash your hands, forks, knives, and cutting boards afterward."
] | 0 | closed choice | grade11 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The second set of instructions is more formal. It uses more impersonal language and a direct command (wash utensils). The other set of instructions uses more conversational language (if you're going to be touching, you'd better). | |
Not supported with pagination yet | Does this passage describe the weather or the climate?
The wind is weak today in Dover, Delaware. | [
"weather",
"climate"
] | 0 | 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 | grade4 | 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.
The wind is weak today in Dover, Delaware.
This passage tells you about the wind speed in Dover today. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Not supported with pagination yet | Would you find the word who on a dictionary page with the following guide words?
wake - wildlife | [
"yes",
"no"
] | 0 | yes or no | 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 who is between the guide words wake - wildlife, it would be found on that page. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
led - log | [
"laugh",
"lime"
] | 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 lime is between the guide words led - log, it would be found on that page. | |
Which property do these four objects have in common? | [
"slippery",
"sour",
"soft"
] | 0 | 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 soft object changes shape when pressed or squeezed. The jello is soft, but the wet ice cube is not.
A slippery object is hard to hold onto or stand on. All four objects are slippery.
A lemon has a sour taste. The wet ice cube and the jello are not ... | |
Which property do these two objects have in common? | [
"yellow",
"salty"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
Potato chips have a salty taste. Both objects are salty.
Yellow is a color.
This color is yellow. The potato chips are yellow, but the ocean water is not.
The property that both objects have in common is salty. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Ava said there's no way Scotland's Loch Ness Monster is real, but she's not even Scottish, so there's no way she could really know. | [
"straw man: a misrepresentation of an opponent's position that makes it easier to argue against",
"false dichotomy: an argument that presents only two choices when more options exist",
"ad hominem: an attack against the person making the argument, rather than the argument itself"
] | 2 | closed choice | grade9 | 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 Ava's claim that the Loch Ness Monster isn't real is not valid because she's not Scottish. This is a personal attack on Ava's background that isn't relevant to whether her claim is valid. This illustrates a type of logical fallacy known as ad hominem. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Gwen told her friends that Mark was a typical Peter Pan type. | [
"a song",
"literature"
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion Peter Pan is literature.
In a J. M. Barrie novel, the character Peter Pan retreats to Neverland and refuses to grow up.
The allusion Peter Pan means a person who won't take on adult responsibilities. | |
Not supported with pagination yet | Based on this information, what is Marina's phenotype for the tail spots trait? | [
"a spotted tail",
"an unspotted tail"
] | 1 | In a group of guppies, some individuals have a spotted tail and others have an unspotted tail. In this group, the gene for the tail spots trait has two alleles. The allele for a spotted tail (I) is dominant over the allele for an unspotted tail (i).
Marina is a guppy from this group. Marina has the homozygous genotype ... | 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 ... | Marina's genotype for the tail spots gene is ii. Marina's genotype of ii has only i alleles. The i allele is for an unspotted tail. So, Marina's phenotype for the tail spots trait must be an unspotted tail.
To check this answer, consider whether Marina's alleles are dominant or recessive. The allele for a spotted tail ... |
Not supported with pagination yet | Is the following trait inherited or acquired?
Regan plays hockey. | [
"acquired",
"inherited"
] | 0 | 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 play hockey. Instead, some people learn how to play hockey. Playing the sport takes practice. So, playing hockey is an acquired trait. | |
Which of these continents does the prime meridian intersect? | [
"North America",
"Africa",
"South America"
] | 1 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Africa. It does not intersect South America or North America. | ||
Which state is highlighted? | [
"New Hampshire",
"Pennsylvania",
"Vermont",
"Connecticut"
] | 2 | closed choice | grade3 | social science | geography | States | Identify states of the Northeast | This state is Vermont. | |||
What is the expected ratio of offspring with a tall stem to offspring with a short stem? Choose the most likely ratio. | [
"4:0",
"1:3",
"2:2",
"3:1",
"0:4"
] | 0 | In a group of pea plants, some individuals have a tall stem and others have a short stem. In this group, the gene for the stem height trait has two alleles. The allele for a short stem (h) is recessive to the allele for a tall stem (H).
This Punnett square shows a cross between two pea plants. | 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 tall stem or a short stem, consider whether each phenotype is the dominant or recessive allele's version of the stem height trait. The question tells you that the h allele, which is for a short stem, is recessive to the H allele, which is for ... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Max spoke at the city council meeting, claiming the new recycling regulations were draconian. | [
"Greek history",
"a fable"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Gree... | The source of the allusion draconian is Greek history.
Draco, a government official in seventh-century Athens, Greece, wrote a code of laws that called for severe punishments for even minor offenses.
The allusion draconian means harsh. | |
Which of these states is farthest west? | [
"Maine",
"Vermont",
"Connecticut",
"North Carolina"
] | 3 | 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 west arrow is pointing. North Carolina is farthest west. | ||
Which is the main persuasive appeal used in this ad? | [
"logos (reason)",
"ethos (character)",
"pathos (emotion)"
] | 2 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to pathos, or emotion. It triggers fear of the discomforts of being sick. | ||
Which country is highlighted? | [
"Saint Kitts and Nevis",
"Haiti",
"Jamaica",
"Cuba"
] | 2 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Jamaica. | |||
Not supported with pagination yet | What is the volume of a large trash can? | [
"17 fluid ounces",
"17 cups",
"17 gallons"
] | 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 large trash can is 17 gallons.
17 fluid ounces and 17 cups are both too little. |
Not supported with pagination yet | Which object has the most thermal energy? | [
"a cookie at a temperature of 62°F",
"a cookie at a temperature of 85°F",
"a cookie at a temperature of 94°F"
] | 2 | 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 move faster, the temperature goes up. The matter now has both ... | All three cookies have the same mass but different temperatures. Since the 94°F cookie is the hottest, it has the most thermal energy. |
Not supported with pagination yet | Select the fish. | [
"horned frog",
"cassowary",
"Amazon tree boa",
"tiger shark"
] | 3 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Fish live underwater. They have fins, not limbs. | An Amazon 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 cassowary is a bird. It has feathers, two wings, and a beak.
Cassowaries have wings, but they cannot fly! They can run very fast.
A horned frog is a... | |
Not supported with pagination yet | What is the temperature of a warm loaf of bread? | [
"60°C",
"60°F"
] | 0 | Select the better estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Estimate temperatures | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Temperature can be written with units of degrees Fahrenheit (°F) or Celsius (°C). Use the list below to compare the two units.
212°F | Water boils | 100°C
98.6°F | Body temperature | 37°C
68°F ... | The better estimate for the temperature of a warm loaf of bread is 60°C.
60°F is too cold. |
Not supported with pagination yet | Which is stickier? | [
"tape",
"ice cube"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. | Sticky is a property. A sticky material can stick to other things.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the tape is stickier. If you touch a piece of tape, it will stick to you. | |
What can Aaliyah and Wanda trade to each get what they want? | [
"Wanda can trade her almonds for Aaliyah's tomatoes.",
"Wanda can trade her broccoli for Aaliyah's oranges.",
"Aaliyah can trade her tomatoes for Wanda's sandwich.",
"Aaliyah can trade her tomatoes for Wanda'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.
Aaliyah and Wanda open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Aaliyah wante... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Aaliyah wanted broccoli in her lunch and Wanda was hoping for tomatoes. Look at the labeled part of the images.
Aaliyah has tomatoes. Wanda has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | ||
Not supported with pagination yet | What information supports the conclusion that Mark inherited this trait? | [
"Mark's friend also has hazel eyes.",
"Mark wears glasses and so do his sisters.",
"Mark's biological father wears contacts in his hazel eyes."
] | 2 | Read the description of a trait.
Mark has hazel eyes. | closed choice | grade8 | 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.... | |
Not supported with pagination yet | Select the mammal. | [
"hippopotamus",
"great white shark",
"arroyo toad",
"great crested newt"
] | 0 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Mammals have hair or fur and feed their young milk. | 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 great crested newt is an amphibian. It has moist skin and begins its life in water.
Some newts live in water. Other newts live on land but lay their eggs in water.
A great white shar... | |
Not supported with pagination yet | Using only these supplies, which question can Tessa investigate with an experiment? | [
"Will eight ounces of carbonated water or eight ounces of tap water get warmer when placed in a jar in the sun?",
"When placed in the sun, will eight ounces of water in a glass jar or eight ounces of water in a plastic cup get warmer?",
"When placed in the sun, will eight ounces of water in a closed jar or eigh... | 2 | Tessa leaves a glass jar of cold tea outside in full sunlight. When she goes to get it, she notices that the tea is warm. She wonders what factors affect how warm a liquid gets from sitting in the sunlight. So, she decides to design an experiment. She has the following supplies available:
two identical glass jars
two j... | 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 | Based on this information, what is Digby's phenotype for the fur color trait? | [
"brown fur",
"black fur"
] | 0 | In a group of Labrador retrievers, some individuals have black fur and others have brown fur. In this group, the gene for the fur color trait has two alleles. The allele for brown fur (f) is recessive to the allele for black fur (F).
Digby is a Labrador retriever from this group. Digby has the homozygous genotype ff fo... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Digby's genotype for the fur color gene is ff. Digby's genotype of ff has only f alleles. The f allele is for brown fur. So, Digby's phenotype for the fur color trait must be brown fur.
To check this answer, consider whether Digby's alleles are dominant or recessive. The allele for brown fur (f) is recessive to the all... |
Not supported with pagination yet | What information supports the conclusion that Jon acquired this trait? | [
"Jon learned to identify insects by reading many books about insects.",
"Jon likes to look at butterflies and beetles."
] | 0 | Read the description of a trait.
Jon is good at identifying insects. | closed choice | grade3 | natural science | biology | Heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
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 weaker in Pair 2.",
"The magnetic force is weaker 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. | 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. | Distance affects the strength of the magnetic force. But the distance between the magnets in Pair 1 and in Pair 2 is the same.
So, the strength of the magnetic force is the same in both pairs. | |
Not supported with pagination yet | Select the reptile. | [
"mandarinfish",
"bull shark",
"leaf-tailed gecko",
"eastern newt"
] | 2 | 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 leaf-tailed gecko is a reptile. It has scaly, waterproof skin.
Many geckos have special pads on their toes. The pads help them climb up plants and rocks.
A bull shark is a fish. It lives underwater. It has fins, not limbs.
Bull sharks can live in both fresh and salt water. They are found in rivers and in shallow part... | |
Which three months have an average precipitation of around 3.5inches in Seattle? | [
"May, June, and October",
"June, July, and December",
"February, March, and October"
] | 2 | 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 Seattle, look at the graph.
Choice "Feb" is incorrect.
Choice "Mar" is incorrect.
Choice "May" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Oct" is incorrect.
Choice "Dec" is incorrect.
Choice "February, March, and October" is incorrect.
Feb... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 1 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
kangaroo - kitten | [
"kerosene",
"knight"
] | 0 | closed choice | grade6 | 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 kerosene is between the guide words kangaroo - kitten, it would be found on that page. | |
Which animal is also adapted to be camouflaged in the snow? | [
"Arctic wolf",
"common hawk-cuckoo"
] | 0 | Short-tailed weasels live in cold, snowy areas in Europe. The short tailed weasel is adapted to be camouflaged in the snow.
Figure: short-tailed weasel. | closed choice | grade5 | 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 short-tailed weasel.
During the winter, the short-tailed weasel has white fur covering its body. It is adapted to be camouflaged in the snow. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
This Arctic wolf has white fur coveri... | |
Based on the arrows, which of the following organisms is a consumer? | [
"Arctic fox",
"lichen"
] | 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 | grade4 | natural science | biology | Ecosystems | Interpret food webs | 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... | Consumers eat other organisms. So, there are arrows in a food web that point from other organisms to consumers.
The lichen does not have any arrows pointing to it. So, the lichen is a producer, not a consumer.
The Arctic fox has arrows pointing to it from the bilberry and the collared lemming. So, the Arctic fox is a c... | |
What is the capital of Montana? | [
"Boise",
"Missoula",
"Helena",
"Billings"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Helena is the capital of Montana. | |||
Not supported with pagination yet | How long is a basketball court? | [
"32 miles",
"32 feet",
"32 yards",
"32 inches"
] | 2 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of a basketball court is 32 yards.
32 inches and 32 feet are too short. 32 miles is too long. |
Not supported with pagination yet | Read the following excerpt from a student essay. How can the writer best improve his or her organization?
When I worked on my grandparents' farm one summer, I spent a lot of time caring for animals—feeding chickens and pigs, milking cows, and grooming horses. I decided to become a vegetarian. As a vegetarian, I eat lot... | [
"by making a general statement before giving specific examples",
"by adding a transition between the first two sentences",
"by reordering to keep related ideas together"
] | 1 | closed choice | grade12 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | During peer review, you read and respond to a fellow student's writing. While there are many methods and strategies that you can use for reviewing a text, it is generally helpful to frame your suggestions in concrete and constructive ways and to consider the following areas for revision:
Ideas and development: Does the... | The writer could best improve his or her organization by adding a transition between the first two sentences.
For example, the writer could provide a smoother transition between the first two sentences by adding text such as After realizing how much I love animals, I couldn't bear the idea of eating meat anymore.
When ... | |
Not supported with pagination yet | Which figure of speech is used in this text?
Carson's room is as tidy as an overgrown garden. | [
"verbal irony",
"pun"
] | 0 | closed choice | grade6 | language science | figurative-language | Literary devices | Classify figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
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 verbal irony, which involves saying one thing but implying something very different.
As tidy as an overgrown garden shows verbal irony because an overgrown garden is not tidy. | |
Not supported with pagination yet | Compare the motion of three speedboats. Which speedboat was moving at the highest speed? | [
"a speedboat that moved 235kilometers east in 5hours",
"a speedboat that moved 390kilometers east in 5hours",
"a speedboat that moved 330kilometers south in 5hours"
] | 1 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each speedboat moved and the time it took to move that distance. The direction each speedboat moved does not affect its speed.
Notice that each speedboat moved for 5 hours. The speedboat that moved 390 kilometers moved the farthest distance in that time. So, that speedboat must have moved at the hi... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | 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 north pole of one magnet is closest to the north pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. | |
Not supported with pagination yet | What information supports the conclusion that Joel acquired this trait? | [
"Joel learned how to knit in an after school program.",
"Joel knits sweaters using cotton, wool, and other types of yarn."
] | 0 | Read the description of a trait.
Joel knows how to knit sweaters. | closed choice | grade4 | natural science | biology | Traits and heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Which of these states is farthest west? | [
"North Dakota",
"Pennsylvania",
"Virginia",
"Florida"
] | 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 west arrow is pointing. North Dakota is farthest west. | ||
Which continent is highlighted? | [
"Asia",
"Australia",
"Africa",
"Europe"
] | 2 | 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 Africa. | ||
What is the expected ratio of offspring with wavy fur to offspring with straight fur? Choose the most likely ratio. | [
"0:4",
"1:3",
"2:2",
"3:1",
"4:0"
] | 2 | In a group of Syrian hamsters, some individuals have straight fur and others have wavy fur. In this group, the gene for the fur texture trait has two alleles. The allele for straight fur (F) is dominant over the allele for wavy fur (f).
This Punnett square shows a cross between two Syrian hamsters. | 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 wavy fur or straight fur, consider whether each phenotype is the dominant or recessive allele's version of the fur texture trait. The question tells you that the F allele, which is for straight fur, is dominant over the f allele, which is for wa... | |
Which area on the map shows China? | [
"B",
"C",
"D",
"A"
] | 0 | China is the largest country in East Asia. The official name of China is the People's Republic of China. China's eastern coast borders the Pacific Ocean, and its southwestern region borders the Himalayan Mountains. Look at the map. Then answer the question below. | closed choice | grade7 | social science | global-studies | Asia: society and environment | Country profile: China | Look back at the map. Find the compass rose, which shows the four main directions. Then locate other geographic features on the map, such as the Pacific Ocean and Himalayan Mountains. The information in the question gives clues to determining where China is located on the map:
China is the largest country in East Asia.... | ||
Which is the main persuasive appeal used in this ad? | [
"pathos (emotion)",
"logos (reason)",
"ethos (character)"
] | 0 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to pathos, or emotion. It links the product to a feeling of independence. | ||
Which of these states is farthest north? | [
"Colorado",
"South Carolina",
"Florida",
"Arkansas"
] | 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 north arrow is pointing. Colorado is farthest north. | ||
Not supported with pagination yet | What does the euphemism in this text suggest?
Mr. Pruitt is enjoying his golden years in a luxurious beachside community just down the street from his grandchildren. | [
"Mr. Pruitt lives near his family.",
"Mr. Pruitt is old."
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
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 golden years indicates that Mr. Pruitt is old. Golden years is a nicer way of referring to old age. | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The () sun beat down upon the heads of the construction workers. | [
"cruel",
"hot"
] | 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 cruel. It describes the sun as if it were a mean person. | |
Not supported with pagination yet | Which text uses the word disinterested in its traditional sense? | [
"As a teacher of American history, Mr. Ferguson tries to remain disinterested when discussing controversial issues, giving equal attention and consideration to each major viewpoint.",
"As an experienced teacher of American history, Mr. Ferguson believes that playing history-based trivia games will revive even the... | 0 | closed choice | grade12 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The first text uses disinterested in its traditional sense: unbiased or impartial.
As a teacher of American history, Mr. Ferguson tries to remain disinterested when discussing controversial issues, giving equal attention and consideration to each major viewpoint.
The second text uses disinterested in its nontraditional... | |
What is the capital of Maryland? | [
"Montpelier",
"Baltimore",
"Boston",
"Annapolis"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | |||
Which continent is highlighted? | [
"Asia",
"Antarctica",
"South America",
"North America"
] | 2 | 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 | What do these two changes have in common?
cutting an apple
breaking a rock in half | [
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by cooling."
] | 1 | 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.
Cutting an apple is a physical change. The apple gets a different shape. But it is still made of the same type of matter as the uncut apple.
Breaking a rock in half is a physical change. The rock gets broken into two pieces. But the pieces are still made of the same type of matter as th... | |
Not supported with pagination yet | Using only these supplies, which question can Bridget investigate with an experiment? | [
"When placed in the sun, does a glass jar wrapped in cotton heat up more than a glass jar wrapped in wool?",
"When wrapped in a cotton shirt and placed in the sun, does a large jar or a small jar heat up more?",
"When placed in the sun, does a glass jar wrapped in a black cotton shirt heat up more than a glass ... | 2 | Bridget is outside with her friend on a sunny day. Bridget is wearing a light-colored shirt, and she notices that she feels colder than her friend, who is wearing a dark shirt. She wonders what factors affect how fabric warms an object. So, she decides to design an experiment. She has the following supplies available:
... | 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 | Which figure of speech is used in this text?
The Conway family is going to spend two weeks in Ocean City, but for Jerry it will be a working vacation, since he'll be checking in with the office every day. | [
"euphemism",
"oxymoron"
] | 1 | closed choice | grade12 | 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.
Working vacation is a contradiction, because going on a vacation implies that you are taking a break from work. | |
Not supported with pagination yet | What information supports the conclusion that Albert inherited this trait? | [
"Albert likes to wear a blue sweater to match his blue eyes.",
"Albert's mother has blue eyes. She passed this trait down to Albert."
] | 1 | Read the description of a trait.
Albert has blue eyes. | closed choice | grade4 | natural science | biology | Traits and heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | What information supports the conclusion that Nathan acquired this trait? | [
"Nathan's scar was caused by an accident. He cut his arm when he fell off his bicycle.",
"Some scars fade more quickly than others."
] | 0 | Read the description of a trait.
Nathan has a scar on his right arm. | closed choice | grade5 | natural science | biology | Traits and heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | Select the vertebrate. | [
"banana slug",
"zebra dove",
"lion's mane jellyfish",
"monarch butterfly"
] | 1 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | 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 zebra dove is a bird. Like other birds, a zebra dove is a vertebrate. It has a backbone.
A monarch butterfly is an insect. Like other insects, a monarch butterfly is an invertebrate. It does not have a backbone. It has an exoskeleton.
Like other slugs, a banana slug is an invertebrate. It does not have a backbone. It... |
Which country is highlighted? | [
"Papua New Guinea",
"Australia",
"the Marshall Islands",
"the Federated States of Micronesia"
] | 3 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | |||
Not supported with pagination yet | What kind of sentence is this?
Why did the photographer choose to shoot the sunset in black and white? | [
"declarative",
"interrogative",
"exclamatory"
] | 1 | closed choice | grade6 | 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, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence asks something, and it ends with a question mark. It is an interrogative sentence. | |
Not supported with pagination yet | Which figure of speech is used in this text?
. . . the report of my death was an exaggeration.
—Mark Twain, in a notice that appeared in the New York Journal | [
"understatement",
"anaphora"
] | 0 | 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 understatement, which involves deliberately representing something as less serious or important than it really is.
Exaggeration is an understatement, since the report was in fact totally inaccurate. | |
Not supported with pagination yet | Would you find the word head on a dictionary page with the following guide words?
having - hop | [
"no",
"yes"
] | 1 | yes or no | grade3 | 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 head is between the guide words having - hop, it would be found on that page. | |
Select the bird below. | [
"coral snake",
"griffon vulture"
] | 1 | Birds have feathers, two wings, and a beak. A bald eagle is an example of a bird. | 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 griffon vulture is a bird. It has feathers, two wings, and a beak.
Vultures do not usually hunt live animals. They eat animals that are already dead! This behavior is called scavenging.
A coral snake is a reptile. It has scaly, waterproof skin.
Coral snakes spend most of their time underground or hiding under leaves. | |
What type of rock is marble? | [
"sedimentary",
"metamorphic",
"igneous"
] | 1 | This is a piece of marble. Marble forms when rocks such as limestone are changed by high temperature and pressure.
Marble is made mostly of the minerals calcite and dolomite. Polished marble is used to make floors and kitchen counters. | closed choice | grade7 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together, or compacted, to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when ... | Marble is a metamorphic rock. Like other metamorphic rocks, it forms when a rock is changed by high temperature and pressure.
Heat and pressure can change the type and arrangement of minerals in a rock. This change forms a new rock with different properties. Marble can form when sedimentary rocks such as limestone are ... | |
Which country is highlighted? | [
"Barbados",
"Trinidad and Tobago",
"Jamaica",
"Grenada"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Trinidad and Tobago. | |||
Is pyrite a mineral or a rock? | [
"rock",
"mineral"
] | 1 | Pyrite has the following properties:
found in nature
fixed crystal structure
solid
metallic luster
not made by living things
pure substance | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | Pyrite has all the properties of a mineral. So, pyrite is a mineral. | |
Not supported with pagination yet | Would you find the word express on a dictionary page with the following guide words?
entertain - erase | [
"no",
"yes"
] | 0 | yes or no | grade7 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since express is not between the guide words entertain - erase, it would not be found on that page. | |
Not supported with pagination yet | Which figure of speech is used in this text?
It's an open secret that Omar is writing a book based on his experiences living in Singapore. He never talks about it, but almost all his friends know. | [
"hyperbole",
"oxymoron"
] | 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 an oxymoron, a joining of two seemingly contradictory terms.
Open secret is a contradiction, because open describes something that is freely or publicly known, and a secret is hidden. | |
Not supported with pagination yet | Which is softer? | [
"cotton shirt",
"glass marbles"
] | 0 | closed choice | grade3 | 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... | Soft is a property. A soft material changes shape when pressed or squeezed.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the cotton shirt is softer. If you squeeze cotton fabric, it will change shape. | |
Which property do these three objects have in common? | [
"blue",
"rough",
"slippery"
] | 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 slippery object is hard to hold onto or stand on. The tree bark and the velcro are not slippery.
Blue is a color.
This color is blue. None of the objects are blue.
A rough object feels scratchy when you touch it. All three objects are rough.
The pr... | |
Look at the models of molecules below. Select the elementary substance. | [
"bromine",
"dichloromethane",
"fluoromethane"
] | 0 | 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 ... | |||
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"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, but the particles in sample A have a higher average speed than the particles 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, sampl... | |
Not supported with pagination yet | What kind of sentence is this?
You're an absolute genius for figuring out how to stop the leak! | [
"interrogative",
"declarative",
"exclamatory"
] | 2 | closed choice | grade6 | 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, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence tells about something, but it shows strong feeling and ends with an exclamation point. It is an exclamatory sentence. | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Leah told Mia that the fleece jacket on the bench looked like hers.",
"The fleece jacket that Leah saw on the bench looked like Mia's."
] | 0 | closed choice | grade6 | language science | pronouns | 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 second answer choice contains a vague pronoun reference. The pronoun hers could refer to Leah's or Mia's.
Leah told Mia that the fleece jacket on the bench looked like hers.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is clear.... | |
In this food chain, the diatom is a producer. Why? | [
"It makes its own food.",
"It eats another living thing."
] | 0 | This diagram shows a food chain from the River Frome, a freshwater ecosystem in England. | closed choice | grade3 | natural science | biology | Ecosystems | Identify roles in food chains | Every living thing needs food to stay alive. Living things get their food in different ways. A food chain shows how living things 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 ... | In this food chain, the diatom is a producer because it makes its own food. The diatom uses carbon dioxide, water, and sunlight to make its own food. | |
Select the fish below. | [
"cardinalfish",
"sea eagle"
] | 0 | Fish live underwater. They have fins, not limbs. A clownfish is an example of a fish. | 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 cardinalfish is a fish. It lives underwater. It has fins, not limbs.
Cardinalfish often live near coral reefs. They are nocturnal, which means that they are active mostly at night.
A sea eagle is a bird. It has feathers, two wings, and a beak.
Sea eagles use their sharp beaks to eat fish and other birds. | |
Which of these states is farthest south? | [
"Vermont",
"Michigan",
"Illinois",
"Maine"
] | 2 | 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. Illinois is farthest south. | ||
Not supported with pagination yet | Select the invertebrate. | [
"rockfish",
"green frog",
"Canadian lynx",
"monarch butterfly"
] | 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 monarch butterfly is an insect. Like other insects, a monarch butterfly is an invertebrate. It does not have a backbone. It has an exoskeleton.
A rockfish is a fish. Like other fish, a rockfish is a vertebrate. It has a backbone.
A Canadian lynx is a mammal. Like other mammals, a Canadian lynx is a vertebrate. It has... |
Not supported with pagination yet | Is a flashlight a good or a service? | [
"a service",
"a good"
] | 1 | closed choice | grade2 | social science | economics | Economics | Goods and services | Everything you can buy is either a good or a service.
A good is something you can touch or hold in your hands. For example, a hammer is a good.
A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service. | To decide whether a flashlight is a good or a service, ask these questions:
Is a flashlight something you can touch? Yes.
Is a flashlight a job you might pay someone else to do? No.
So, a flashlight is a good. |
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.