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Not supported with pagination yet | Which tense does the sentence use?
We will wait outside for Katie. | [
"present tense",
"past tense",
"future tense"
] | 2 | 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, wait. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | Which tense does the sentence use?
Both men and women work in the field. | [
"future tense",
"present tense",
"past tense"
] | 1 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, work. The verb tells you about something that is true or happening now. | |
Not supported with pagination yet | Suppose Liz decides to go as a ghost. Which result would be a cost? | [
"Liz will spend some time and money to get the costume.",
"Liz will get to wear the costume she is more excited about."
] | 0 | Liz is deciding whether to go as a ghost or a superhero to a costume party. She would rather go as a ghost. But she already has a superhero costume. | closed choice | grade4 | 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 Liz wants or needs:
Liz will spend some time and money to get the costume. |
What is the name of the colony shown? | [
"Florida",
"New Jersey",
"Indiana",
"Delaware"
] | 3 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Delaware. | |||
What is the capital of Ohio? | [
"Charleston",
"Columbus",
"Green Bay",
"Madison"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Columbus is the capital of Ohio. | |||
What is the capital of Texas? | [
"Austin",
"Lincoln",
"Jackson",
"Nampa"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Austin is the capital of Texas. | |||
Not supported with pagination yet | What is the volume of a ketchup packet? | [
"5 milliliters",
"5 liters"
] | 0 | Select the better estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.... | The better estimate for the volume of a ketchup packet is 5 milliliters.
5 liters is too much. |
Not supported with pagination yet | Select the vertebrate. | [
"poison frog",
"bess beetle"
] | 0 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade3 | 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 bess beetle is an insect. Like other insects, a bess beetle is an invertebrate. It does not have a backbone. It has a hard outer cover.
A poison frog is an amphibian. Like other amphibians, a poison frog is a vertebrate. It has a backbone. |
Complete the sentence.
The mutation in the () affected the structure and function of the (). | [
"leptin receptor protein . . . OB-R gene",
"OB-R gene . . . leptin receptor protein"
] | 1 | The following passage describes the effects of a gene mutation, which is a permanent change in a gene. Read the passage and then follow the instructions below.
As in humans, hunger in mice depends on how much food a mouse has eaten. When a mouse eats, its hunger is controlled by the leptin receptor protein.
The leptin... | closed choice | grade6 | natural science | biology | Genes to traits | Describe the effects of gene mutations on organisms | An organism's genes contain information about its proteins. Each gene encodes, or contains the instructions for making, one protein or a group of proteins.
A permanent change in a gene is called a mutation. Because a mutation changes a gene, the mutation may change the structure of the protein encoded by that gene.
The... | A mutation in a gene may affect the protein it encodes.
So, the mutation in the OB-R gene affected the structure and function of the leptin receptor protein. | |
Not supported with pagination yet | Compare the motion of three ships. Which ship was moving at the lowest speed? | [
"a ship that moved 720kilometers west in 10hours",
"a ship that moved 695kilometers east in 10hours",
"a ship that moved 180kilometers west in 10hours"
] | 2 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each ship moved and the time it took to move that distance. The direction each ship moved does not affect its speed.
Notice that each ship moved for 10 hours. The ship that moved 180 kilometers moved the shortest distance in that time. So, that ship must have moved at the lowest speed. | |
Not supported with pagination yet | Which is a compound sentence? | [
"The camera isn't working, so the battery must be dead.",
"The artist prepared a canvas for a new oil painting."
] | 0 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple or compound? | A simple sentence is a sentence with only one subject and predicate.
The pitcher threw the ball to first base.
A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so.
The pitcher threw the ball, and the batter hit it.
Some simple sentences have a compound subject or ... | The first sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction so.
The camera isn't working, so the battery must be dead. | |
Is aquamarine a mineral? | [
"yes",
"no"
] | 0 | Aquamarine has the following properties:
solid
naturally occurring
fixed crystal structure
pure substance
not made by living things | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Aquamarine has all the properties of a mineral. So, aquamarine is a mineral. | |
Not supported with pagination yet | What information supports the conclusion that Tammy acquired this trait? | [
"Tammy learned to speak two languages in school.",
"Tammy's mother speaks one language."
] | 0 | Read the description of a trait.
Tammy speaks two languages. | 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 | Assume all other forces on Devon are balanced. Which statement describes the forces on Devon? | [
"The forces are unbalanced, so there is a net force on Devon.",
"The forces are balanced, so there is no net force on Devon."
] | 0 | Devon is sitting on a roller coaster cart as it reaches the bottom of a big loop. Earth's gravity is pulling down on Devon with a force of 600N. The seat of the cart is pushing up on Devon with a force of 1,200N. | 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 Devon, look at the forces:
Earth's gravity is pulling Devon down with a force of 600 N.
The seat of the cart is pushing Devon up with a force of 1,200 N.
The forces are in opposite directions, and the forces have different magnitudes: 600 N and 1,200 N. This means that the forces... |
Which of these states is farthest west? | [
"Tennessee",
"Minnesota",
"Nebraska",
"Ohio"
] | 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 west arrow is pointing. Nebraska is farthest west. | ||
Is a bean a solid or a liquid? | [
"a liquid",
"a solid"
] | 1 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid or liquid | Solid and liquid 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 shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter is a li... | A bean is a solid. A solid has a size and shape of its own.
If you put many beans into a jar, the group of beans will take the shape of the jar, as a liquid would. But be careful! A bean is not a liquid. Each bean still has a size and shape of its own. | ||
Not supported with pagination yet | What does the idiom in this text suggest?
In such an unfamiliar environment, Emmett was a fish out of water. | [
"Emmett had not visited that location before.",
"Emmett felt out of place."
] | 1 | closed choice | grade6 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An idiom is an expression that cannot be understood literally. Its meaning must be learned.
The assignment was a piece of cake. | The text uses an idiom, an expression that cannot be understood literally.
The idiom a fish out of water suggests that Emmett felt out of place. A fish out of water is someone out of his or her usual, comfortable environment. | |
Select the organism in the same genus as the smooth newt. | [
"Lissotriton helveticus",
"Ambystoma mexicanum",
"Taricha torosa"
] | 0 | This organism is a smooth newt. Its scientific name is Lissotriton vulgaris. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A smooth newt's scientific name is Lissotriton vulgaris. The first word of its scientific name is Lissotriton.
Taricha torosa is in the genus Taricha. The first word of its scientific name is Taricha. So, Taricha torosa and Lissotriton vulgaris are not in the same genus.
Ambystoma mexicanum is in the genus Ambystoma. T... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Kimi has no school spirit—she never comes to any of our football games. | [
"false dichotomy: an argument that presents only two choices when more options exist",
"ad hominem: a personal attack against one's opponent"
] | 0 | closed choice | grade8 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Kimi doesn't have school spirit, because she doesn't go to football games. However, there may be a number of reasons why Kimi doesn't go to football games. This illustrates a type of logical fallacy known as a false dichotomy. | |
What is the capital of Mississippi? | [
"Oklahoma City",
"Atlanta",
"Jackson",
"Biloxi"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Jackson is the capital of Mississippi. | |||
Which property do these four objects have in common? | [
"stretchy",
"opaque",
"sour"
] | 1 | Select the best answer. | closed choice | grade5 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A stretchy object gets longer when you pull on it. The cracker is not stretchy.
An opaque object does not let light through. All four objects are opaque.
A lemon has a sour taste. The cracker is not sour.
The property that all four objects have in co... | |
Not supported with pagination yet | What does the personification in this text suggest?
There was never a sound beside the wood but one,
And that was my long scythe whispering to the ground.
—Robert Frost, "Mowing" | [
"The scythe gently touched the ground.",
"The scythe made a soft swishing sound."
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Personification is giving human characteristics to nonhuman things.
The trees danced in the wind. | The text uses personification, giving human characteristics to nonhuman things.
Whispering suggests that the scythe made a soft swishing sound. A whisper is a quiet way of speaking, and a scythe cutting through grass would make a gentle swishing sound similar to a whisper. | |
What is the probability that a Channel catfish produced by this cross will have a white body? | [
"2/4",
"0/4",
"1/4",
"4/4",
"3/4"
] | 3 | In a group of Channel catfish, some individuals have a brown body and others have a white body. In this group, the gene for the body color trait has two alleles. The allele for a brown body (B) is dominant over the allele for a white body (b).
This Punnett square shows a cross between two Channel catfish. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | ||
Not supported with pagination yet | Complete the statement.
During this chemical reaction, the solution becomes (). | [
"colder",
"warmer"
] | 1 | When a chemical reaction absorbs or releases thermal energy, the reaction causes a change in temperature. Read the passage about a chemical reaction that absorbs or releases thermal energy. Then, follow the instructions below.
Dutch chocolate is a special type of chocolate that has a dark color and a mild flavor. It is... | closed choice | grade6 | natural science | chemistry | Chemical reactions | Describe energy changes in chemical reactions | During a chemical reaction, thermal energy is absorbed or released as heat. This transfer of thermal energy changes the temperature of the reaction's surroundings. The surroundings are everything around the reaction, such as the solution that the reaction takes place in or the air nearby.
Some reactions release thermal... | To determine whether the solution becomes warmer or colder, look for the text that describes the movement of thermal energy during the reaction.Dutch chocolate is a special type of chocolate that has a dark color and a mild flavor. It is made by treating chocolate with a solution of water and sodium hydroxide (NaOH). W... |
Which continent is highlighted? | [
"Africa",
"Europe",
"Asia",
"South America"
] | 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 Asia. | ||
Which property do these three objects have in common? | [
"sour",
"stretchy",
"blue"
] | 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 stretchy object gets longer when you pull on it. None of the objects are stretchy.
Blue is a color.
This color is blue. None of the objects are blue.
A lemon has a sour taste. All three objects are sour.
The property that all three objects have in ... | |
Not supported with pagination yet | Look at the word. Does it have a closed syllable or an open syllable?
frost | [
"open",
"closed"
] | 1 | closed choice | grade2 | language science | word-study | Short and long vowels | Is the syllable open or closed? | Words are made up of syllables. Two kinds of syllables are closed and open.
A closed syllable has one vowel and ends with a consonant. It usually has a short vowel sound.
desk: short e
kit / ten: short i / short e
An open syllable ends with one vowel. It usually has a long vowel sound.
go: long o
he / ro: long e / long... | The word frost ends with a consonant and has a short vowel sound. So, it has a closed syllable. | |
Not supported with pagination yet | How long is a limousine? | [
"9 inches",
"9 feet",
"9 yards"
] | 2 | Select the best estimate. | closed choice | grade5 | 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.
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 limousine is 9 yards.
9 inches and 9 feet are both too short. |
Select the organism in the same genus as the Steller's sea eagle. | [
"Hyacinthus orientalis",
"Haliaeetus pelagicus",
"Alopias pelagicus"
] | 1 | This organism is a Steller's sea eagle. Its scientific name is Haliaeetus pelagicus. | closed choice | grade7 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Steller's sea eagle's scientific name is Haliaeetus pelagicus. The first word of its scientific name is Haliaeetus.
This organism and the Steller's sea eagle are in the same genus and the same species! Both organisms have the same scientific name, Haliaeetus pelagicus.
Hyacinthus orientalis is in the genus Hyacinthus... | |
Which animal's feet are also adapted for digging? | [
"six-banded armadillo",
"Weddell seal"
] | 0 | s are found in parts of North America. They live in burrows and eat other animals that also live in burrows. The feet of the are adapted for digging.
Figure: American badger. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the American badger.
The American badger has long, straight claws. Its feet are adapted for digging. The American badger uses its claws to break up soil and move it out of the way.
Now look at each animal. Figure out which animal has a similar adaptation.
The six-banded armadillo has long, straig... | |
Which property do these two objects have in common? | [
"sticky",
"rough"
] | 0 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A rough object feels scratchy when you touch it. The chocolate milkshake is not rough.
A sticky object can stick to other things. Both objects are sticky.
The property that both objects have in common is sticky. | |
Which property do these two objects have in common? | [
"scratchy",
"bouncy"
] | 1 | Select the better answer. | closed choice | grade2 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A scratchy object is rough and itchy against your skin. The tennis ball is not scratchy.
A bouncy object will bounce back from the floor if you drop it. Both objects are bouncy.
The property that both objects have in common is bouncy. | |
Which of these states is farthest north? | [
"Mississippi",
"Maine",
"Texas",
"Pennsylvania"
] | 1 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Maine is farthest north. | ||
Which animal's mouth is also adapted to tear through meat? | [
"aardvark",
"leopard"
] | 1 | are carnivores, or meat eaters. They eat small mammals and birds. The lynx's mouth is adapted to tear through meat.
Figure: Eurasian lynx. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the Eurasian lynx.
The Eurasian lynx has a large mouth and sharp teeth. Its mouth is adapted to tear through meat. The Eurasian lynx uses its large mouth to grab its prey. It uses its sharp teeth to cut up the meat of the prey into pieces it can swallow.
Now look at each animal. Figure out which ... | |
Not supported with pagination yet | Based on this information, what is Phoenix's phenotype for the cheek color trait? | [
"bright orange cheeks",
"RR"
] | 0 | In a group of cockatiels, some individuals have bright orange cheeks and others have pale orange cheeks. In this group, the gene for the cheek color trait has two alleles. The allele R is for bright orange cheeks, and the allele r is for pale orange cheeks.
Phoenix, a cockatiel from this group, has bright orange cheeks... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. Phoenix's observable version of the cheek color trait is bright orange cheeks. So, Phoenix's phenotype for the cheek color trait is bright orange cheeks. |
Not supported with pagination yet | The city of Dover has been one of the world's biggest makers of cough drops for many years. But last month, Dover's cough drop factories were destroyed by floods. What will probably happen to the overall supply of cough drops? | [
"The supply will probably go down.",
"The supply will probably go up."
] | 0 | closed choice | grade6 | social science | economics | Supply and demand | Understand overall supply and demand | Overall supply is the total amount of a good or service that producers make and sell. There are several things that can make overall supply go up or down. The table below shows how changes to these things might affect overall supply.
| Resources | Number of producers or suppliers | Expected change in demand
Supply goe... | Floods destroyed the cough drop factories in Dover. The number of producers of cough drops went down. So, the supply of cough drops will probably go down. | |
Which animal is also adapted to be camouflaged in the snow? | [
"snowy owl",
"skunk"
] | 0 | es live in the cold Arctic tundra. The is adapted to be camouflaged in the snow.
Figure: Arctic fox. | 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 fox.
During the winter, the Arctic fox 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 snowy owl has white feathers covering its body. It ... | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The frozen waffles, now deliciously warm and brown, () from the toaster. | [
"popped up",
"leaped"
] | 1 | 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 leaped. It describes the waffles as if they were people who jump into the air. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | 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,... | The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... | |
Not supported with pagination yet | Which egg has more thermal energy? | [
"the colder egg",
"the hotter egg"
] | 1 | Two eggs are identical except for their temperatures. | closed choice | grade6 | natural science | physics | Thermal energy | How are temperature and mass related to thermal energy? | Matter is made of tiny particles called atoms. Atoms are always moving.
The energy of moving atoms is called thermal energy. The total amount of thermal energy in matter depends on three things: the type of matter, the amount of matter, and how fast the atoms are moving.
Temperature measures how hot or cold matter is. ... | The two eggs are made of the same material and have the same mass. So, the hotter egg has more thermal energy. |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"sample B",
"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 | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in sample B has more mass than each particle in sample A. The particles in sample B also have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average ... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1.",
"The magnitude of the magnetic force is smaller 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 and shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | 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 2 than in Pair 1. So, the magnit... | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is stronger in Pair 2.",
"The magnetic force is stronger in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2. | |
Which of these cities is marked on the map? | [
"Memphis",
"Miami",
"Oklahoma City",
"San Antonio"
] | 3 | closed choice | grade4 | social science | geography | Cities | Cities of the Southeast | The city is San Antonio, Texas. Oklahoma City, Miami, and Memphis are marked with gray circles on the map below. | |||
What is the capital of Maryland? | [
"Annapolis",
"Montpelier",
"Harrisburg",
"Baltimore"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Annapolis is the capital of Maryland. | |||
Not supported with pagination yet | Suppose Tammy decides to make onion soup. Which result would be a cost? | [
"The onion soup will be tastier than the egg drop soup would have been.",
"Tammy will spend more time making the onion soup than she would have spent making the egg drop soup."
] | 1 | Tammy is deciding whether to make onion soup or egg drop soup for dinner. She wants dinner to be as tasty as possible. But she is also hungry and wants to eat soon. | closed choice | grade4 | 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 Tammy wants or needs:
Tammy will spend more time making the onion soup than she would have spent making the egg drop soup. |
What is the probability that a cat produced by this cross will have straight fur? | [
"0/4",
"4/4",
"3/4",
"1/4",
"2/4"
] | 1 | In a group of cats, some individuals have straight fur and others have curly fur. In this group, the gene for the fur type trait has two alleles. The allele for curly fur (f) is recessive to the allele for straight fur (F).
This Punnett square shows a cross between two cats. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | ||
Not supported with pagination yet | Select the part whose main job is to help an animal cell make proteins. | [
"vacuoles",
"endoplasmic reticulum",
"mitochondria",
"cytoplasm"
] | 1 | closed choice | grade8 | natural science | biology | Cells | Identify functions of animal cell parts | Animal cells are made up of many different parts. Each cell part has a function that helps the cell survive and grow.
Some cell parts are called organelles. Organelles are cell structures that are surrounded by their own membranes. Here are some of the organelles in animal cells:
Mitochondria help the cell get the ener... | The endoplasmic reticulum helps the cell make proteins. Instructions for making proteins are sent to ribosomes. Ribosomes can attach to the endoplamic reticulum and use the instructions to make proteins. | |
Not supported with pagination yet | What kind of sentence is this?
Scarlett felt intimidated by the steep cliff that she faced on her first rock-climbing adventure. | [
"declarative",
"interrogative",
"exclamatory"
] | 0 | closed choice | grade10 | 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 always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An imperative sentence makes a request or a demand and usually ends with a period. If a demand shows strong feeling, it can ... | The sentence is a statement and ends with a period. It is a declarative sentence. | |
What is the capital of North Dakota? | [
"Lincoln",
"Fargo",
"Madison",
"Bismarck"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Bismarck is the capital of North Dakota. | |||
Not supported with pagination yet | Based on this information, what is Millie's phenotype for the body hair trait? | [
"a hairless body",
"a hairy body"
] | 0 | In a group of cats, some individuals have a hairy body and others have a hairless body. In this group, the gene for the body hair trait has two alleles. The allele for a hairless body (b) is recessive to the allele for a hairy body (B).
Millie is a cat from this group. Millie has the homozygous genotype bb for the body... | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Millie's genotype for the body hair gene is bb. Millie's genotype of bb has only b alleles. The b allele is for a hairless body. So, Millie's phenotype for the body hair trait must be a hairless body.
To check this answer, consider whether Millie's alleles are dominant or recessive. The allele for a hairless body (b) i... |
Not supported with pagination yet | Complete the statement.
Tin is (). | [
"an elementary substance",
"a compound"
] | 0 | Tin is a metal used to make cans that hold food. The chemical formula for tin is Sn. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using chemical formulas | Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For s... | You can tell whether tin is an elementary substance or a compound by counting the number of symbols in its chemical formula. A symbol contains either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for tin is Sn. This formula contains one symbol: Sn. So, the formula... |
Which country is highlighted? | [
"Australia",
"Papua New Guinea",
"Tonga",
"Samoa"
] | 3 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Samoa. | |||
Not supported with pagination yet | Is a shirt a good or a service? | [
"a good",
"a service"
] | 0 | closed choice | grade3 | social science | economics | Basic economic principles | 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 shirt is a good or a service, ask these questions:
Is a shirt something you can touch? Yes.
Is a shirt a job you might pay someone else to do? No.
So, a shirt is a good. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
When the vase broke, my notoriously clumsy younger brother served as the scapegoat. | [
"British history",
"the Bible"
] | 1 | 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 scapegoat is the Bible.
The Bible's book of Leviticus describes a tradition of sacrificing an innocent goat to atone for humanity's sins.
The allusion scapegoat means a person who is unjustly blamed. | |
Not supported with pagination yet | Which press release is more formal? | [
"On Nov. 19, musicians from all over town will battle it out in the fourth annual Jam-a-thon, happening at the amphitheater.",
"On November 19, the Springdale Amphitheater will host area musicians vying for top honors in the fourth annual Jam-a-thon."
] | 1 | closed choice | grade10 | 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 press release is more formal. It uses more elevated language (area musicians, top honors). The other press release uses idioms (battle it out) and abbreviations (Nov.). | |
Not supported with pagination yet | What is the volume of a bathtub? | [
"230 milliliters",
"230 liters"
] | 1 | Select the better estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.... | The better estimate for the volume of a bathtub is 230 liters.
230 milliliters is too little. |
Not supported with pagination yet | What does the allusion in this text suggest?
With the gutters clogged and water rising in the streets, Pam, who was watching the storm from her window, commented, "We're going to need an ark to get out of here." | [
"Pam wants to protect her possessions.",
"Pam thinks the storm will cause major flooding."
] | 1 | closed choice | grade11 | language science | figurative-language | Literary devices | Interpret the figure of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An allusion is a brief reference to something or someone well known, often from history or literature.
"I'd better get home before I turn into a pumpkin!" Lila remarked. | The text uses an allusion, a brief reference to someone or something well known.
The allusion to an ark suggests that Pam thinks the storm will cause major flooding. In the Bible, it rains for forty days and forty nights; Noah, his family, and animals of every species survive the great flood in an ark that he builds. | |
Not supported with pagination yet | Rosh Hashanah is an important holiday in which religion? | [
"Islam",
"Judaism",
"Buddhism",
"Christianity"
] | 1 | closed choice | grade2 | social science | culture | Cultural celebrations | Rosh Hashanah | Rosh Hashanah is a holiday in the religion of Judaism. Followers of Judaism are known as Jews. | ||
Not supported with pagination yet | Which word does not rhyme? | [
"bite",
"kite",
"vote"
] | 2 | closed choice | grade2 | language science | phonological-awareness | Rhyming | Which word does not rhyme? | Rhyming words are words that end with the same sound.
The words tip and slip rhyme. They both end with the same sound.
The words meet and treat also rhyme. They both end with the same sound, even though the sound has two different spellings.
The words tip and meet don't rhyme. They end with different sounds. | The words bite and kite rhyme. They both end with the ite sound.
The word vote does not rhyme. It ends with a different sound. | |
Not supported with pagination yet | What is the volume of a kiddie pool? | [
"290 fluid ounces",
"290 cups",
"290 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 kiddie pool is 290 gallons.
290 fluid ounces and 290 cups are both too little. |
Not supported with pagination yet | What is the temperature of the air inside of a freezer? | [
"18°F",
"18°C"
] | 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 the air inside of a freezer is 18°F.
18°C is too hot. |
Is a robot a solid, a liquid, or a gas? | [
"a liquid",
"a gas",
"a solid"
] | 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... | A robot is a solid. A solid has a size and shape of its own.
A robot can move. But if it moves across a room, the robot will still have a size and shape of its own. | ||
Not supported with pagination yet | Which is a run-on sentence? | [
"Sophia is from Springdale now she lives in Washington.",
"The curious girl looked into the damp cellar."
] | 0 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A run-on sentence is made up of two sentences that are joined without end punctuation or with just a comma.
I knocked on the door it opened.
It started raining, we ran inside.
To fix a run-on ... | Sophia is from Springdale now she lives in Washington is a run-on sentence. It has two sentences that are joined without end punctuation: Sophia is from Springdale and Now she lives in Washington. | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"dear Jon,",
"Dear Jon,"
] | 1 | closed choice | grade2 | language science | capitalization | Capitalization | 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. Jon is capitalized because it is a proper noun. | |
Not supported with pagination yet | What does the hyperbole in this text suggest?
Our supervisor is very stressed right now; she has a mountain of paperwork on her desk that she needs to finish by tomorrow. | [
"The supervisor's paperwork is stacked precariously on her desk.",
"The supervisor has a lot of paperwork to do."
] | 1 | closed choice | grade11 | language science | figurative-language | Literary devices | Interpret the figure of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Hyperbole is an obvious exaggeration that is not meant to be taken literally.
I ate so much that I think I might explode! | The text uses hyperbole, an obvious exaggeration that is not meant to be taken literally.
The hyperbole mountain of paperwork suggests that the supervisor has a lot of paperwork to do. The stack of paperwork on the supervisor's desk is not literally as tall as a mountain. | |
Not supported with pagination yet | Which correctly shows the title of a magazine? | [
"\"First for Women\"",
"***First for Women***"
] | 1 | closed choice | grade4 | language science | punctuation | Formatting | Formatting titles | The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead.
A Midsummer Night's Dream
The title of a poem, song, article, or short story should be in quotation marks.
"You Are My Sunshine" | A magazine should be in italics.
The correct title is **First for Women**. | |
Not supported with pagination yet | Suppose Kurt decides to buy a copy of the book. Which result would be a cost? | [
"Kurt will get to keep the book as long as he wants.",
"Kurt will spend money to buy the book."
] | 1 | Kurt 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 | grade4 | 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 Kurt wants or needs:
Kurt will spend money to buy the book. |
Not supported with pagination yet | Which sentence states a fact? | [
"The American red squirrel, or Tamiasciurus hudsonicus, looks graceful as it leaps from tree to tree.",
"Born blind, baby squirrels depend on their mothers for two to three months after birth."
] | 1 | closed choice | grade6 | language science | writing-strategies | Developing and supporting arguments | Distinguish facts from opinions | A fact is something that can be proved by research or observation.
Napoleon Bonaparte was shorter than King Louis XVI.
The statement above is a fact. The statement can be proved by researching the height of each man and comparing them.
An opinion is something that a person believes, thinks, or feels. An opinion cannot ... | The second sentence states a fact.
Born blind, baby squirrels depend on their mothers for two to three months after birth.
It can be proved by searching online for information about how young squirrels develop.
The first sentence states an opinion.
The American red squirrel, or Tamiasciurus hudsonicus, looks graceful a... | |
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 of these continents does the equator intersect? | [
"Europe",
"Asia",
"Antarctica"
] | 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 equator is the line at 0° latitude. It intersects Asia. It does not intersect Antarctica or Europe. | ||
Not supported with pagination yet | Does this passage describe the weather or the climate?
The sky is clear right now, so it should be easy to see the stars tonight. | [
"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 sky is clear right now, so it should be easy to see the stars tonight.
This passage tells you about the cloud cover right now. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Not supported with pagination yet | How long does it take to drink a small glass of water? | [
"30 hours",
"30 seconds"
] | 1 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose units of time | 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 the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to drink a small glass of water is 30 seconds.
30 hours is too slow. |
Which country is highlighted? | [
"Trinidad and Tobago",
"Jamaica",
"Haiti",
"Cuba"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Jamaica. | |||
Which specific humidity level was measured within the outlined area shown? | [
"14 grams of water vapor per kilogram of air",
"11 grams of water vapor per kilogram of air",
"22 grams of water vapor per kilogram of air"
] | 2 | The map below shows humidity in the lower atmosphere on August 1, 2016. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in South America on that day.
Look at the map. Then, answer the question below.
Data source: United ... | closed choice | grade7 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 18 and 24 grams of water vapor per kilogram of air.
22 grams of water vapor per kilogram... | |
Not supported with pagination yet | What information supports the conclusion that Mandy inherited this trait? | [
"Mandy and her mother both wear their hair in braids.",
"Mandy's parents have red hair. They passed down this trait to Mandy."
] | 1 | Read the description of a trait.
Mandy has red hair. | 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 | Is the following trait inherited or acquired?
Vince has naturally pale skin. | [
"acquired",
"inherited"
] | 1 | Hint: Humans are born with their skin color. | 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... | Humans do not choose their skin color. Babies get their skin color from their parents. So, Vince's skin color is an inherited trait. |
Which animal's mouth is also adapted to tear through meat? | [
"pronghorn",
"cougar"
] | 1 | are carnivores, or meat eaters. They eat small mammals and birds. The lynx's mouth is adapted to tear through meat.
Figure: Eurasian lynx. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the Eurasian lynx.
The Eurasian lynx has a large mouth and sharp teeth. Its mouth is adapted to tear through meat. The Eurasian lynx uses its large mouth to grab its prey. It uses its sharp teeth to cut up the meat of the prey into pieces it can swallow.
Now look at each animal. Figure out which ... | |
Which rhetorical appeal is primarily used in this ad? | [
"ethos (character)",
"pathos (emotion)",
"logos (reason)"
] | 2 | closed choice | grade12 | 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 the writer or speaker as trustworthy, authoritative, or sharing important values with the audience. An ad that appe... | The ad appeals to logos, or reason, by citing research to show that the advertised toothpaste is highly effective. | ||
Not supported with pagination yet | Compare the motion of two blue whales. Which blue whale was moving at a higher speed? | [
"a blue whale that moved 45miles in 5hours",
"a blue whale that moved 55miles in 5hours"
] | 1 | closed choice | grade2 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects movi... | Look at the distance each blue whale moved and the time it took to move that distance.
One blue whale moved 55 miles in 5 hours.
The other blue whale moved 45 miles in 5 hours.
Notice that each blue whale spent the same amount of time moving. The blue whale that moved 55 miles moved a farther distance in that time. So,... | |
Not supported with pagination yet | What kind of sentence is this?
What made Maggie so upset? | [
"interrogative",
"imperative"
] | 0 | closed choice | grade4 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence asks something, and it ends with a question mark. It is an interrogative sentence. | |
What is the capital of Rhode Island? | [
"Newport",
"Topeka",
"Boston",
"Providence"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | |||
Not supported with pagination yet | Which logical fallacy is used in the text?
I used to love this TV show, but then I found out that Emir likes it, too. So I changed my opinion—if someone like Emir likes a show, it can't be as good as I thought! | [
"guilt by association: a negative association intended to discredit someone or something",
"bandwagon fallacy: the assumption that the popular choice is automatically correct",
"false dichotomy: an argument that presents only two choices when more options exist"
] | 0 | 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 a television show must be bad because someone the speaker hates enjoys it. However, this is not evidence that the show is bad. This illustrates a type of logical fallacy known as guilt by association. | |
Not supported with pagination yet | Which word does not rhyme? | [
"ham",
"hole",
"role"
] | 0 | closed choice | grade1 | language science | phonological-awareness | Rhyming | Which word does not rhyme? | Rhyming words are words that end with the same sound.
The words tip and slip rhyme. They both end with the ip sound.
The words lake and make rhyme. They both end with the ake sound.
The words tip and lake don't rhyme. They end with different sounds. | The words hole and role rhyme. They both end with the ole sound.
The word ham does not rhyme. It ends with a different sound. | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Which of these oceans does the prime meridian intersect? | [
"the Indian Ocean",
"the Pacific Ocean",
"the Arctic Ocean"
] | 2 | 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 the Arctic Ocean. It does not intersect the Pacific Ocean or the Indian Ocean. | ||
Not supported with pagination yet | Which sentence states a fact? | [
"The region north of the Arctic Circle is the most miserable place on earth.",
"North of the Arctic Circle, there are days each year when the sun does not completely rise or set."
] | 1 | closed choice | grade5 | language science | writing-strategies | Developing and supporting arguments | Distinguish facts from opinions | A fact is something that can be proved to be true.
The month of July has more days than the month of June.
This is a fact. It can be proved by looking at a calendar and counting the number of days in each month.
An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved true.
July is ... | The second sentence states a fact.
North of the Arctic Circle, there are days each year when the sun does not completely rise or set.
It can be proved by looking up information about the Arctic Circle.
The first sentence states an opinion.
The region north of the Arctic Circle is the most miserable place on earth.
Most... | |
What is the capital of Illinois? | [
"Denver",
"Bismarck",
"Chicago",
"Springfield"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Springfield is the capital of Illinois. | |||
Not supported with pagination yet | Is this a run-on sentence?
After playing an hour-long set for nearly one hundred cheering fans, Hunter's band returned to the stage and delivered a stellar encore performance. | [
"no",
"yes"
] | 0 | 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 not a run-on sentence. It is not formed from two sentences that have been run together without appropriate punctuation.
After playing an hour-long set for nearly one hundred cheering fans, Hunter's band returned to the stage and delivered a stellar encore performance. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
The number of off-leash dogs I've seen in Summerfield is completely unacceptable. Let's make our streets safe again by addressing this dog problem, before our city becomes a haven for criminals. | [
"red herring: the use of a completely unrelated topic or idea",
"false causation: the assumption that because two things happened together, one caused the other"
] | 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 off-leash dogs would somehow cause an increase in crime in Summerfield. However, these two ideas aren't related. This illustrates a type of logical fallacy known as a red herring. | |
Not supported with pagination yet | What do these two changes have in common?
baking a loaf of bread
burning a candle | [
"Both are caused by heating.",
"Both are caused by cooling.",
"Both are only physical changes."
] | 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.
Baking a loaf of bread is a chemical change. The type of matter in the dough changes when it is baked. The dough turns into bread!
Burning a candle is a chemical change. Both the wick and the melted wax burn. They react with oxygen in the air and turn into soot, carbon dioxide, and wate... | |
Not supported with pagination yet | Which is a run-on sentence? | [
"Ian picked apples he will give some away.",
"My sister passed the pitcher of water to Aunt Luna."
] | 0 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence, a fragment, or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A sentence fragment is a group of words that does not express a complete thought. It is usually missing a subject or a verb.
Knows the answer.
This is a sentence fragment. It is missing a subj... | Ian picked apples he will give some away is a run-on sentence. It has two sentences that are joined without end punctuation: Ian picked apples and He will give some away. | |
Not supported with pagination yet | Assume all other forces on Addison are balanced. Which statement describes the forces on Addison? | [
"The forces are balanced, so there is no net force on Addison.",
"The forces are unbalanced, so there is a net force on Addison."
] | 1 | Addison is sitting on a roller coaster cart as it reaches the bottom of a big loop. Earth's gravity is pulling down on Addison with a force of 600N. The seat of the cart is pushing up on Addison with a force of 1,200N. | closed choice | grade8 | 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 Addison, look at the forces:
Earth's gravity is pulling Addison down with a force of 600 N.
The seat of the cart is pushing Addison up with a force of 1,200 N.
The forces are in opposite directions, and the forces have different magnitudes: 600 N and 1,200 N. This means that the ... |
Which of these continents does the equator intersect? | [
"Antarctica",
"North America",
"Africa"
] | 2 | 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 equator is the line at 0° latitude. It intersects Africa. It does not intersect North America or Antarctica. | ||
Which of these organisms contains matter that was once part of the persimmon tree? | [
"gray fox",
"silver maple",
"beaver"
] | 0 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
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 II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the persimmon tree.
The only arrow pointing to the beaver starts from the silver maple. The silver maple does not have an arrow pointing to it. So, in this food web, matter does not mov... | |
Not supported with pagination yet | Compare the motion of three speedboats. Which speedboat was moving at the lowest speed? | [
"a speedboat that moved 290kilometers west in 5hours",
"a speedboat that moved 510kilometers east in 5hours",
"a speedboat that moved 215kilometers east in 5hours"
] | 2 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each 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 215 kilometers moved the shortest distance in that time. So, that speedboat must have moved at the lo... | |
Not supported with pagination yet | Which figure of speech is used in this text?
When Zack finally agreed to let his daughter adopt the stray dog, she responded with a smile that was a mile wide. | [
"hyperbole",
"oxymoron"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses hyperbole, an obvious exaggeration that is not meant to be taken literally.
A smile that was a mile wide is an exaggeration, since it is physically impossible to have a smile that is actually a mile wide. | |
Is milk a solid or a liquid? | [
"a solid",
"a liquid"
] | 1 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid or liquid | Solid and liquid 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 shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter is a li... | Milk is a liquid. A liquid takes the shape of any container it is in.
If you pour milk into a different container, the milk will take the shape of that container. But the milk will still take up the same amount of space. | ||
Which country is highlighted? | [
"New Zealand",
"Papua New Guinea",
"Palau",
"Australia"
] | 0 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is New Zealand. | |||
Which month is the coolest on average in Detroit? | [
"November and December",
"January and February",
"June and July"
] | 1 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Temperature is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average temperature for each month. The average temperature can be used to describe the climate of a location.
A line graph can be used t... | To describe the average temperature trends in Detroit, look at the graph.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Jul" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
Choice "Jan" is incorrect.
The average temperatures in January and February are between 25°F and 30°F. These mo... |
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.