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Select the fish below. | [
"salmon",
"box turtle"
] | 0 | Fish live underwater. They have fins, not limbs. A manta ray is an example of a fish. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A box turtle is a reptile. It has scaly, waterproof skin.
A salmon is a fish. It lives underwater. It has fins, not limbs. | |
Is sweat a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 1 | closed choice | grade4 | natural science | physics | States of matter | Identify and sort 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... | Sweat is a liquid. A liquid can change shape. But it still takes up the same amount of space.
When you exercise, drops of sweat may drip down your face. | ||
Not supported with pagination yet | Which sentence is more formal? | [
"Trisha didn't enter student politics until her junior year.",
"Trisha did not enter student politics until her junior year."
] | 1 | closed choice | grade6 | language science | writing-strategies | Author's purpose and tone | Which sentence is more formal? | Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing:
Type | Examples
slang | cool, awesome
idioms | knock your socks off
conversational language | gonna, kinda, yeah
abbreviated language | ASAP, FYI
overly simple or imprecise lan... | The first sentence is less formal. You can tell because it uses a contraction (didn't).
The second sentence does not use a contraction, so it is more formal. | |
Which of the following organisms is the omnivore in this food web? | [
"black rockfish",
"zooplankton",
"kelp bass",
"orca"
] | 2 | Below is a food web from an ocean ecosystem in Monterey Bay, off the coast of California.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | Interpret food webs I | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Omnivores are consumers that eat both producers and other consumers. So, an omnivore has arrows pointing to it from at least one producer and at least one consumer.
The black rockfish has only one arrow pointing to it. This arrow starts from the zooplankton, which is a consumer. So, the black rockfish is a consumer but... | |
Which solution has a higher concentration of purple particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2.",
"The strength 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 | 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 | What information supports the conclusion that Lauren inherited this trait? | [
"Lauren's parents have red hair. They passed down this trait to Lauren.",
"Lauren and her mother both wear their hair in braids."
] | 0 | Read the description of a trait.
Lauren has red hair. | 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? | [
"New Jersey",
"Maryland",
"Connecticut",
"New Hampshire"
] | 1 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. Maryland is farthest west. | ||
Which country is highlighted? | [
"Kiribati",
"the Marshall Islands",
"Tuvalu",
"Nauru"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Kiribati. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
"There's nothing I love more than skipping lunch," Mr. Atkinson told the flight attendant when he learned that no food would be available on his cross-country flight. | [
"verbal irony",
"personification"
] | 0 | closed choice | grade7 | 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.
Nothing I love more shows verbal irony because Mr. Atkinson is probably upset that there isn't anything to eat. | |
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"
] | 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... | The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... | |
Which three months have over 200millimeters of precipitation in Singapore? | [
"May, June, and July",
"November, December, and January",
"August, September, and October"
] | 1 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Singapore, look at the graph.
Choice "Jan" is incorrect.
Choice "May" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.... | |
Not supported with pagination yet | Which is smoother? | [
"plastic water pitcher",
"sandpaper"
] | 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... | Smooth is a property. A smooth material is not rough or bumpy.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the plastic water pitcher is smoother. If you touch the side of a plastic water pitcher, it will not feel rough or bumpy. | |
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."
] | 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 sizes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... | |
Which country is highlighted? | [
"Tonga",
"Tuvalu",
"Fiji",
"Samoa"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | |||
Not supported with pagination yet | Which is stickier? | [
"wood board",
"jam"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. | 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 jam is stickier. If you touch jam, it will stick to you. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | 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 greater distance between magnets, the magnitude of the magnetic force between them is smaller.
There is a greater distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is smaller in Pair 2 than in Pair 1. | |
Not supported with pagination yet | Which tense does the sentence use?
His dog chased the chipmunk up a tree. | [
"future tense",
"past tense",
"present tense"
] | 1 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in past tense. You can tell because it uses a past-tense verb, chased. The verb ends in -ed and tells you about something that has already happened. | |
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 smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 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 sizes. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 1 than in Pair 2. So, the magnit... | |
What is the name of the colony shown? | [
"Virginia",
"Maryland",
"Connecticut",
"North Carolina"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | |||
Which animal is also adapted to be camouflaged among green leaves? | [
"shield mantis",
"black widow spider"
] | 0 | Leaf insects live in the forests of Asia and Australia. The is adapted to be camouflaged among green leaves.
Figure: leaf insect. | 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 leaf insect.
The leaf insect has a green leaf-shaped body. It is adapted to be camouflaged among green leaves. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The shield mantis has a green leaf-shaped body. It is adapted to be ... | |
Not supported with pagination yet | What information supports the conclusion that Elizabeth acquired this trait? | [
"Elizabeth likes to photograph birds at the zoo.",
"Elizabeth was not born knowing how to identify different bird calls. She had to learn this skill."
] | 1 | Read the description of a trait.
Elizabeth is good at identifying birds from their calls. | 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 | Compare the motion of two mountain bikers. Which mountain biker was moving at a lower speed? | [
"a mountain biker who moved 150miles in 10hours",
"a mountain biker who moved 170miles in 10hours"
] | 0 | closed choice | grade2 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects movi... | Look at the distance each mountain biker moved and the time it took to move that distance.
One mountain biker moved 150 miles in 10 hours.
The other mountain biker moved 170 miles in 10 hours.
Notice that each mountain biker spent the same amount of time moving. The mountain biker who moved 150 miles moved a shorter di... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 1 than in Pair 2. So, the magnit... | |
Not supported with pagination yet | What information supports the conclusion that Donald inherited this trait? | [
"Donald's biological father has curly hair.",
"Donald's coworker also has curly hair.",
"Donald and his biological parents have brown hair."
] | 0 | Read the description of a trait.
Donald has curly hair. | 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.... | |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Rainbow Falls in Hilo, Hawaii.
Hilo is a city on the island of Hawaii. Hilo is known for its lush landscapes and beautiful waterfalls. Many waterfalls were larger than usual when over five inches of rain fell during the first two weeks of November.
Hint: Weather is what the atmosphere is like at 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.
Hilo is a city on the island of Hawaii. Hilo is known for its lush landscapes and beautiful waterfalls. Many waterfalls were larger than usual when over five inches of rain fell during the first two weeks of November.
The underlined part of the passage tells you about the amount of rain that... | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Ruth can ride a bicycle. | [
"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 bicycle. Instead, many people learn how to ride. So, riding a bicycle is an acquired trait. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Senator Bowen announced today that she plans to cut funding to early childhood education programs. The last thing we need is a government official who hates children! | [
"bandwagon fallacy: the assumption that the popular choice is automatically correct",
"straw man: a misrepresentation of an opponent's position that makes it easier to argue against"
] | 1 | closed choice | grade6 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Senator Bowen hates children, because she wants to cut education funding. However, the fact that Senator Bowen wants to cut education funding doesn't necessarily suggest that she hates children. This illustrates a type of logical fallacy known as a straw man. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
The thing that makes Jeffrey stand out as a remarkable cellist is that he's a marvelous musician who plays the cello splendidly. | [
"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",
"circular reasoning: an argument that supports a claim with the claim itself"
] | 2 | closed choice | grade10 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Jeffrey is a remarkable cellist because he plays the cello well. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning. | |
Select the bird below. | [
"koala",
"painted stork"
] | 1 | Birds have feathers, two wings, and a beak. A robin 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 painted stork is a bird. It has feathers, two wings, and a beak.
Storks wade in shallow water to look for food. Storks eat fish, insects, worms, and other small animals.
A koala is a mammal. It has fur and feeds its young milk.
Koalas sleep for up to 20 hours a day! | |
Not supported with pagination yet | How long is a school bus? | [
"15 yards",
"15 feet"
] | 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 school bus is 15 yards.
15 feet is too short. |
Not supported with pagination yet | Which object has less thermal energy? | [
"a 5-kilogram brick at a temperature of 150°C",
"a 5-kilogram brick at a temperature of 155°C"
] | 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 slow down, the temperature goes down. The matter now has both ... | The two bricks have the same mass but different temperatures. Since the 150°C brick is colder than the 155°C brick, it has less thermal energy. |
Which animal is also adapted to be camouflaged in the snow? | [
"polar bear",
"hedgehog"
] | 0 | s live in the Canadian Arctic and Greenland. The is adapted to be camouflaged in the snow.
Figure: Arctic hare. | 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 Arctic hare.
During the winter, the Arctic hare 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.
The polar bear has white fur covering its body. It is... | |
Not supported with pagination yet | Which figure of speech is used in this text?
A vote for me is a vote for change, not a vote for the status quo. | [
"antithesis",
"apostrophe"
] | 0 | closed choice | grade11 | 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 antithesis, the contrasting of opposing ideas within a parallel grammatical structure.
The sentence contrasts two parallel phrases, a vote for change and a vote for the status quo. | |
Which ocean is highlighted? | [
"the Indian Ocean",
"the Southern Ocean",
"the Arctic Ocean",
"the Pacific Ocean"
] | 2 | 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 Arctic Ocean. | ||
Not supported with pagination yet | Select the one animal that has all of the mammal traits listed above. | [
"Gray tree frogs hatch from eggs without shells. They live underwater when they are tadpoles. They move onto land when they become adults. The moist skin of adult gray tree frogs can be green or gray. The color of their skin helps them hide on rocks or plants.",
"African elephants have thin hair covering their bo... | 1 | Mammals are a group of animals with similar traits. The following traits can be used to identify mammals:
They feed their offspring milk.
They have fur or hair. Observe the animals and read the descriptions. | closed choice | grade5 | natural science | biology | Classification | Use evidence to classify mammals, birds, fish, reptiles, and amphibians | Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, sc... | To decide if an animal is part of a group, look at the traits of the group.
Mammals have the following traits:
They feed their offspring milk.
They have fur or hair.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A gray tree frog has the following traits... |
Which continent is highlighted? | [
"Africa",
"Europe",
"North America"
] | 0 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is Africa. | ||
Not supported with pagination yet | What do these two changes have in common?
a banana getting ripe on the counter
deep-frying chicken | [
"Both are chemical changes.",
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are caused by heating."
] | 0 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
A banana getting ripe on the counter is a chemical change. As a banana ripens, the type of matter in it changes. The peel changes color and the inside becomes softer and sweeter.
Deep-frying chicken is a chemical change. The heat causes the matter in the chicken to change. Cooked chicke... | |
Which property do these three objects have in common? | [
"flexible",
"bouncy",
"colorful"
] | 0 | 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 flexible object can be folded or bent without breaking easily. All three objects are flexible.
A colorful object has one or more bright colors. The feather is colorful, but the potato sack and the belt are not.
A bouncy object will bounce back from... | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear ms. stewart,",
"Dear Ms. Stewart,"
] | 1 | 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 first greeting is correct:
Its first word is capitalized, and it ends with a comma. Ms. Stewart is capitalized because it is a proper noun. | |
Which of these states is farthest north? | [
"Florida",
"South Carolina",
"Tennessee",
"Delaware"
] | 3 | 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. Delaware is farthest north. | ||
Which solution has a higher concentration of purple particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each purple 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 purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Norma wants to play a guitar solo on our next recording. Her father is a horrible musician, though, so I doubt that Norma's any good either. | [
"guilt by association: a negative association intended to discredit someone or something",
"straw man: a misrepresentation of an opponent's position that makes it easier to argue against"
] | 0 | closed choice | grade7 | 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 Norma must be a bad guitar player, because her father is a horrible musician. However, even though Norma's father is a horrible musician, that doesn't necessarily mean that Norma is as well. This illustrates a type of logical fallacy known as guilt by association. | |
Not supported with pagination yet | Complete the sentence.
Tying a shoelace is a (). | [
"chemical change",
"physical change"
] | 1 | closed choice | grade2 | natural science | chemistry | Physical and chemical change | Identify physical and chemical changes | Chemical changes and physical changes are two ways matter can change.
In a chemical change, the type of matter changes.
Burning a piece of paper is a chemical change. The paper changes into ash and smoke.
In a physical change, the type of matter stays the same.
Cutting a piece of paper is a physical change. The cut pie... | Tying a shoelace is a physical change. The shoelace gets a different shape. But it is still made of the same type of matter. | |
What is the name of the colony shown? | [
"Ohio",
"North Carolina",
"Massachusetts",
"Connecticut"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Connecticut. | |||
Which part of the peach tree do we usually eat? | [
"the stem",
"the root",
"the fruit"
] | 2 | People use peach trees for food. We usually eat the part of this plant that contains the seeds. It grows from a pollinated flower. | closed choice | grade4 | natural science | biology | Plants | Classify fruits and vegetables as plant parts | The fruits and vegetables we eat are parts of plants! Plants are made up of different structures. The different structures carry out important functions.
The roots take in water and nutrients from the soil. They also hold the plant in place in the soil.
The stem supports the plant. It carries food, water, and nutrients... | The part of the peach tree we usually eat is the fruit. It contains the seeds. | |
What is the capital of Maine? | [
"Montpelier",
"Annapolis",
"Augusta",
"Portland"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | |||
Based on the continuum scale, which birds have heavier eggs? | [
"swans",
"geese"
] | 0 | This continuum scale compares the average weights of the eggs of several birds. | closed choice | grade6 | language science | writing-strategies | Visual elements | Read graphic organizers | A graphic organizer is a chart or picture that shows how ideas, facts, or topics are related to one another.
When you read, look for graphic organizers included in the text. You can use these images to find key information. You can also create your own graphic organizers with information that you've read. Doing this ca... | A continuum scale compares things by ordering them along a line. This continuum scale compares the average weights of the eggs of several birds.
Birds with lighter eggs are shown to the left. Birds with heavier eggs are shown to the right. Swan is shown farther to the right than goose, so swans have heavier eggs. | |
Which three months have the same average precipitation? | [
"December, January, and February",
"September, October, and November",
"June, July, and August"
] | 1 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Chicago, look at the graph.
Choice "Jan" is incorrect.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Aug" is incorrect.
Choice "Sep" is incorrect.
Choice "Oct" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
C... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
From the look on her face, Josie is carrying an albatross around her neck. | [
"the Bible",
"a poem"
] | 1 | closed choice | grade12 | 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 an albatross around her neck is a poem.
In Samuel Taylor Coleridge's poem "The Rime of the Ancient Mariner," a sailor shoots and kills an albatross, an action that curses the ship and crew. As his crew members die, the Ancient Mariner feels his guilt hanging like the albatross around his neck... | |
Not supported with pagination yet | Which is a simple sentence? | [
"I slept deeply all night long, but this morning I still feel tired.",
"In 1900, the U.S. state with the largest population was New York."
] | 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.
In 1900, the U.S. state with the largest population was New York. | |
Which trait did Ichthyornis have? Select the trait you can observe in the drawing. | [
"fur",
"teeth"
] | 1 | This drawing shows the skeleton of an ancient animal called Ichthyornis. This drawing was made by looking at the animal's fossils. | closed choice | grade6 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | ||
Not supported with pagination yet | What information supports the conclusion that Adam inherited this trait? | [
"Adam and his siblings all have naturally straight hair.",
"Adam's biological mother often wears her naturally brown hair in a bun.",
"Adam and his biological father have short hair."
] | 1 | Read the description of a trait.
Adam has naturally brown hair. | closed choice | grade7 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Which continent is highlighted? | [
"South America",
"Australia",
"Africa",
"Asia"
] | 0 | 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 South America. | ||
Which is this organism's common name? | [
"Chlamydosaurus kingii",
"frilled lizard"
] | 1 | This organism is a frilled lizard. It is also called Chlamydosaurus kingii. | closed choice | grade8 | 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,... | Chlamydosaurus kingii is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Chlamydosaurus kingii is the organism's scientific name. So, you know that frilled lizard is the common name. | |
Not supported with pagination yet | Which letter opening is more formal? | [
"Dear Mr. Boyer,",
"Dear Andrew,"
] | 0 | closed choice | grade9 | 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 first letter opening is more formal. It uses the recipient's personal title and last name. The other opening uses the recipient's first name, suggesting a more familiar relationship. | |
Not supported with pagination yet | What is the mass of an elephant? | [
"5,765 kilograms",
"5,765 grams"
] | 0 | Select the better estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose metric units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using metric units, mass may be written with units of grams or kilograms.
There... | The better estimate for the mass of an elephant is 5,765 kilograms.
5,765 grams is too light. |
Not supported with pagination yet | Which holiday greeting is more formal? | [
"Happy 4th from the crew at Regan's.",
"Best wishes for an enjoyable Independence Day from the entire staff at Regan's Cafe."
] | 1 | closed choice | grade9 | 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 first holiday greeting is more formal. It uses more elevated language (Independence Day, the entire staff). The other holiday greeting uses casual language (happy 4 th, the crew) that is more familiar in tone. | |
Not supported with pagination yet | What does the personification in this text suggest?
Jim tried to ignore his unfinished essay, but it glared at him from across the room. | [
"It bothered Jim that the essay wasn't finished.",
"The essay was printed in large type."
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Personification is giving human characteristics to nonhuman things.
The trees danced in the wind. | The text uses personification, giving human characteristics to nonhuman things.
Glared at him suggests that it bothered Jim that the essay wasn't finished. The essay is like a person who is bothering Jim. | |
Not supported with pagination yet | What do these two changes have in common?
tying a shoelace
breaking a piece of glass | [
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by heating.",
"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.
Tying a shoelace is a physical change. The shoelace gets a different shape. But it is still made of the same type of matter.
Breaking a piece of glass is a physical change. The glass gets broken into pieces. But each piece is still made of the same type of matter.
Step 2: Look at each a... | |
What is the capital of Maryland? | [
"Augusta",
"Annapolis",
"Baltimore",
"Biloxi"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | |||
Not supported with pagination yet | Does this passage describe the weather or the climate?
The air was muggy and humid today where Bill lives. | [
"weather",
"climate"
] | 0 | 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.
The air was muggy and humid today where Bill lives.
Humidity is the amount of water in the air.
This passage tells you about the humidity today where Bill lives. It describes the atmosphere at a certain place and time. So, this passage describes the weather. | |
Not supported with pagination yet | Using only these supplies, which question can Logan investigate with an experiment? | [
"Do cloth towels dry faster if they are hung in the laundry room or in the backyard?",
"When hung in the laundry room, do black cloth towels or white cloth towels dry more quickly?",
"Does a small cloth towel or a large cloth towel dry faster when hung in the backyard?"
] | 0 | After Logan cleans up a spill, he hangs a wet cloth towel in the laundry room. Two hours later, he notices that the towel has partially dried. He wonders what factors affect how cloth dries. So, he decides to design an experiment. He has the following supplies available:
two identical white cloth towels
water
a clothes... | 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... | |
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"Turquoise is a solid. It is not made by living things.",
"Wood is not a pure substance. It is a solid.",
"Chrysotile is a pure substance. It is a solid."
] | 1 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify minerals using properties | 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... | Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Chrysotile is a mineral.
Wood is not a pure substance. But all minerals are pure substances.
So, wood is not a mineral.
Turquoise is a mineral. | |
Which of these continents does the prime meridian intersect? | [
"Europe",
"North America",
"South America"
] | 0 | 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 Europe. It does not intersect South America or North America. | ||
Not supported with pagination yet | What is the mass of a bicycle? | [
"23 pounds",
"23 ounces",
"23 tons"
] | 0 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of a bicycle is 23 pounds.
23 ounces is too light and 23 tons is too heavy. |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
When I learned the details of Pamela's Faustian bargain, I was in disbelief. | [
"literature",
"history"
] | 0 | closed choice | grade9 | 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 Faustian bargain is literature.
In a play by Christopher Marlowe based on the legend of Faust, a man strikes a deal with the devil. Disregarding the long-term consequences of his actions, he sells his soul in exchange for power.
The allusion Faustian bargain means a compromise of one's values... | |
Which property do these two objects have in common? | [
"bouncy",
"sweet"
] | 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.
Sugar has a sweet taste. Both objects are sweet.
A bouncy object will bounce back from the floor if you drop it. The chocolate bar is not bouncy.
The property that both objects have in common is sweet. | |
Not supported with pagination yet | Which tense does the sentence use?
Ben and Maria will swim in the warm pool. | [
"present tense",
"future tense",
"past tense"
] | 1 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, swim. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
From the look on her face, Celine is carrying an albatross around her neck. | [
"a poem",
"Egyptian history"
] | 0 | closed choice | grade8 | 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 an albatross around her neck is a poem.
In Samuel Taylor Coleridge's poem "The Rime of the Ancient Mariner," a sailor shoots and kills an albatross, an action that curses the ship and crew. As his crew members die, the Ancient Mariner feels his guilt hanging like the albatross around his neck... | |
Which of the following could Pamela's test show? | [
"how much the new turbine would weigh",
"whether the new turbine could produce 10% more electricity",
"if the new turbine could turn easily"
] | 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 | grade7 | 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 east? | [
"Louisiana",
"Delaware",
"Arizona",
"Florida"
] | 1 | closed choice | grade4 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Delaware is farthest east. | ||
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Lisa asked Annie to volunteer at the event, so her absence today is a surprise.",
"Lisa asked Annie to volunteer at the event, so Annie's absence today is a surprise."
] | 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 her could refer to Lisa's or Annie's.
The second answer choice shows a possible correction for the vague pronoun reference. Her has been replaced with Annie's.
Lisa asked Annie to volunteer at the event, so Annie's absence today is a surprise. | |
Not supported with pagination yet | What does the verbal irony in this text suggest?
According to Mr. Brock's kids, his snoring is as quiet as a jackhammer. | [
"The snoring is subtle.",
"The snoring is loud."
] | 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.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking dow... | The text uses verbal irony, which involves saying one thing but implying something very different.
As quiet as a jackhammer suggests that the snoring is loud. A jackhammer is not quiet, and neither is Mr. Brock's snoring. | |
Not supported with pagination yet | Would you find the word himself on a dictionary page with the following guide words?
hot - hygiene | [
"yes",
"no"
] | 1 | 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 himself is not between the guide words hot - hygiene, it would not be found on that page. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
You may be impressed by Senator Holland's work with low-income communities, but the fact remains that he graduated from an elite university. He couldn't possibly empathize with low-income constituents. | [
"appeal to nature: the assumption that natural things are always good",
"guilt by association: a negative association intended to discredit someone or something",
"hasty generalization: a broad claim based on too few observations"
] | 1 | closed choice | grade12 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Senator Holland can't empathize with his low-income constituents because he went to an elite university. However, going to an elite university doesn't necessarily mean you're out of touch. This illustrates a type of logical fallacy known as guilt by association. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 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, but some of them are different sizes. | closed choice | grade5 | natural science | physics | Magnets | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
map - midnight | [
"me",
"moose"
] | 0 | closed choice | 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 me is between the guide words map - midnight, it would be found on that page. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Don't try to tell me that you only watch educational programming, Christina! I know for a fact that your sister only watches reality television. | [
"circular reasoning: an argument that supports a claim with the claim itself",
"guilt by association: a negative association intended to discredit someone or something"
] | 1 | closed choice | grade7 | 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 Christina must watch reality television, because her sister watches reality television. However, even though Christina's sister watches reality television, that doesn't necessarily mean that Christina does, too. This illustrates a type of logical fallacy known as guilt by association. | |
Which of these states is farthest east? | [
"Mississippi",
"California",
"Wyoming",
"Washington"
] | 0 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Mississippi is farthest east. | ||
Which country is highlighted? | [
"Jamaica",
"Haiti",
"the Dominican Republic",
"Dominica"
] | 0 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Jamaica. | |||
Which country is highlighted? | [
"Grenada",
"Barbados",
"Saint Vincent and the Grenadines",
"Saint Lucia"
] | 2 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | |||
Which statement describes the Cerrado ecosystem? | [
"It has a small amount of rain.",
"It has soil that is poor in nutrients."
] | 1 | Figure: Cerrado.
The savanna grasslands of Brazil are called the Cerrado. The Cerrado covers over one-fifth of Brazil and is home to termites, anteaters, armadillos, and other organisms. | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A savanna grassland is a type of ecosystem. Savanna grasslands have the following features: warm summers and warm winters, a rainy season and a dry season, and soil that is poor in nutrients. So, the following statements describe the Cerrado ecosystem: warm summers and warm winters, a rainy season and a dry season, and... | |
What is the capital of Virginia? | [
"Nampa",
"Richmond",
"Arlington",
"Norfolk"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | |||
Complete the sentence.
A douglas fir seed can grow into (). | [
"a male cone",
"a new plant",
"pollen"
] | 1 | Douglas fir seeds grow inside of cones. | closed choice | grade4 | natural science | biology | Plants | Describe and construct conifer life cycles | Conifers are plants that grow cones. Conifers use their cones to reproduce, or make new plants like themselves. How do conifers use their cones to reproduce?
Conifers can grow male and female cones. Male cones make pollen, and female cones make eggs. Pollination is what happens when wind blows pollen from male cones on... | A seed can germinate and grow into a new plant.
The new plant can grow male cones and pollen. But a seed does not grow into a male cone or pollen. | |
What type of rock is chalk? | [
"sedimentary",
"metamorphic",
"igneous"
] | 0 | This is a piece of chalk. Chalk forms below the ocean floor. It is made of the body parts of tiny marine organisms. The main mineral in chalk is calcite.
Some marine organisms make hard shells. When the organisms die, these shells fall to the ocean floor. Over time, layers of broken shells can get pressed together into... | 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 ... | Chalk is a sedimentary rock. Like other sedimentary rocks, it forms from layers of sediment.
Many marine organisms make shells. These shells can fall to the ocean floor when the organisms die. The shells are a type of sediment. They usually build up in layers. Over time, the top layers press down on the bottom layers, ... | |
What is the capital of New Hampshire? | [
"Concord",
"Augusta",
"Manchester",
"Austin"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Concord is the capital of New Hampshire. | |||
Which property matches this object? | [
"bouncy",
"blue"
] | 0 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
Blue is a color.
This color is blue. The basketball is not blue.
A bouncy object will bounce back from the floor if you drop it. The basketball is bouncy. | |
Not supported with pagination yet | Which tense does the sentence use?
Anthony will read his book before bed. | [
"past tense",
"present tense",
"future tense"
] | 2 | closed choice | grade5 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, read. The verb tells you about something that is going to happen. | |
Which air temperature was measured within the outlined area shown? | [
"8°C",
"12°C",
"17°C"
] | 0 | The map below shows air temperatures in the lower atmosphere on June 12, 2013. The outlined area shows an air mass that influenced weather in South America on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research Labo... | closed choice | grade6 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show air temperatures.
The map's legend tells you the temperature that each color represents. Colors on the left in the legend represent lower temperatures than colors on the right. For ... | Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent.
The legend tells you that this air mass contained air with temperatures between 0°C and 10°C.
8°C is within this range.
12°C and 17°C are outside of this range. | |
Which solution has a higher concentration of yellow particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... | |
Select the organism in the same species as the American kestrel. | [
"Phoebastria nigripes",
"Falco sparverius",
"Ardea goliath"
] | 1 | This organism is an American kestrel. Its scientific name is Falco sparverius. | closed choice | grade4 | 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 American kestrel's scientific name is Falco sparverius.
Falco sparverius has the same scientific name as an American kestrel. So, these organisms are in the same species.
Ardea goliath does not have the same scientific name as an American kestrel. So, Falco sparverius and Ardea goliath are not in the same species.
P... | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Lucy asked Rachel to volunteer at the event, so Rachel's absence today is a surprise.",
"Lucy asked Rachel to volunteer at the event, so her absence today is a surprise."
] | 1 | 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 second answer choice contains a vague pronoun reference. The pronoun her could refer to Lucy's or Rachel's.
The first answer choice shows a possible correction for the vague pronoun reference. Her has been replaced with Rachel's.
Lucy asked Rachel to volunteer at the event, so Rachel's absence today is a surprise. | |
Not supported with pagination yet | What is the volume of a bathroom sink? | [
"10 liters",
"10 milliliters"
] | 0 | Select the better estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.... | The better estimate for the volume of a bathroom sink is 10 liters.
10 milliliters is too little. |
Not supported with pagination yet | Complete the sentence.
A piece of apple turning brown is a (). | [
"physical change",
"chemical change"
] | 1 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Identify 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.
Burning a piece of paper is a chemical change. When paper gets hot enough, it reacts with oxygen in the air and burn... | A piece of apple turning brown is a chemical change. The apple reacts with oxygen in the air and turns into a different type of matter.
If you scrape off the brown layer of the apple, the inside is still white. The inside hasn't touched the air. So the chemical change didn't happen to that part of the apple. | |
Is Rafflesia arnoldii made up of one cell? | [
"yes",
"no"
] | 1 | This organism is Rafflesia arnoldii. It is a member of the plant kingdom.
Rafflesia arnoldii has the largest flowers in the world. A single flower can be three feet wide! R. arnoldii is commonly called a corpse flower because the flower smells like rotting meat. | yes or no | grade5 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Rafflesia arnoldii is a plant. Plants are made up of many cells. | |
Which animal's skin is also adapted for survival in cold places? | [
"Eurasian lynx",
"fire salamander"
] | 0 | s live in the Canadian Arctic and Greenland. The 's skin is adapted to help the animal survive in cold places.
Figure: Arctic hare. | closed choice | grade3 | 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 Arctic hare.
During the winter, the Arctic hare has thick fur covering its skin. Its skin is adapted for survival in cold places. The Arctic hare uses its fur to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
During the winter, the Eurasi... | |
Not supported with pagination yet | What do these two changes have in common?
mixing lettuce and salad dressing
sewing an apron | [
"Both are caused by cooling.",
"Both are chemical changes.",
"Both are caused by heating.",
"Both are only physical changes."
] | 3 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Mixing lettuce and salad dressing is a physical change. Together, the salad and dressing make a mixture. But making this mixture does not form a different type of matter.
Sewing an apron is a physical change. The fabric and thread that make up the apron get a new shape, but the type of ... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Last year, the city of Greenpoint allocated more money to public parks. This year, however, littering increased, so the increase in park funding must have been responsible. | [
"appeal to nature: the assumption that natural things are always good",
"false causation: the assumption that because two things happened together, one caused the other"
] | 1 | closed choice | grade7 | 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 increased park funding was responsible for an increase in littering. However, even though littering increased after funding to parks was increased, that doesn't necessarily mean that the funding was responsible. This illustrates a type of logical fallacy known as false causation. | |
Which statement best describes the average monthly precipitation in Boston? | [
"Precipitation does not change much from month to month in Boston.",
"About the same amount of precipitation falls each month between May and October.",
"March is the month with the highest average precipitation."
] | 1 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. 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 Boston, look at the graph.
Choice "Mar" is incorrect.
Choice "May" is incorrect.
Choice "Oct" is incorrect.
Choice "Precipitation does not change much from month to month in Boston." is incorrect.
On average, more precipitation falls between November and April than betwee... |
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.