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Which solution has a higher concentration of blue particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | grade7 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... | |
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 | Which type of sentence is this?
Reggie always approaches difficult tasks enthusiastically, and he frequently motivates others with his energy and fervor. | [
"simple",
"complex",
"compound-complex",
"compound"
] | 3 | closed choice | grade8 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is compound. It is made up of two independent clauses joined by the coordinating conjunction and.
Reggie always approaches difficult tasks enthusiastically, and he frequently motivates others with his energy and fervor. | |
Not supported with pagination yet | Is there a sentence fragment?
When it comes to seafood, Americans aren't always eating what they think they are. According to an FDA report based on DNA analysis of fish that are frequently misidentified. | [
"no",
"yes"
] | 1 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify sentence fragments | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A sentence fragment is a group of words that does not express a complete thought.
Rehearsing daily because we have a concert in two weeks.
This fragment is missing a subjec... | There is a sentence fragment that does not express a complete thought.
When it comes to seafood, Americans aren't always eating what they think they are. According to an FDA report based on DNA analysis of fish that are frequently misidentified.
Here is one way to fix the sentence fragment:
When it comes to seafood, Am... | |
Not supported with pagination yet | Select the one animal that has all of the bird traits listed above. | [
"Common ostriches have a beak and feathers. They also have two wings, but they cannot fly. Ostriches lay the biggest eggs of any bird. The shell of an ostrich egg is so hard that you can stand on the egg without breaking it!",
"Florida manatees have hairs on their bodies that are similar to whiskers. These hairs ... | 0 | Birds are a group of animals with similar traits. The following traits can be used to identify birds:
They have feathers.
They have wings.
They have a beak.
They make eggs with shells. 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.
Birds have the following traits:
They have feathers.
They have wings.
They have a beak.
They make eggs with shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A Florida manat... |
Select the organism in the same genus as the European nightjar. | [
"Larus michahellis",
"Caprimulgus macrurus",
"Goura scheepmakeri"
] | 1 | This organism is a European nightjar. Its scientific name is Caprimulgus europaeus. | 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 European nightjar's scientific name is Caprimulgus europaeus. The first word of its scientific name is Caprimulgus.
Larus michahellis is in the genus Larus. The first word of its scientific name is Larus. So, Larus michahellis and Caprimulgus europaeus are not in the same genus.
Caprimulgus macrurus is in the genus C... | |
Which solution has a higher concentration of blue particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | grade8 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... | |
Is the following statement about our solar system true or false?
Earth's volume is more than ten times as great as Mars's volume. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade8 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice.
The volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To determine if this statement is true, calculate the value of ten times the volume of Mars.
Then compare the result to the volume of Earth. The volume of Earth is 1.08 x 10^12 km^3, which is less than 1.63 x 10^12 km^3. So, Earth's volume is less than ten times as great as Mars's volume. | |
What is the capital of Delaware? | [
"Trenton",
"Georgetown",
"Dover",
"Tallahassee"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Dover is the capital of Delaware. | |||
Which animal's skin is also adapted for survival in cold places? | [
"armadillo lizard",
"snowy owl"
] | 1 | es live in the cold Arctic tundra. The 's skin is adapted to help the animal survive in cold places.
Figure: Arctic fox. | 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 fox.
The Arctic fox has thick fur covering its skin. Its skin is adapted for survival in cold places. The Arctic fox uses its fur to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
The snowy owl has a thick coat of feathers covering... | |
What is the capital of New York? | [
"Albany",
"Jefferson City",
"New York City",
"Augusta"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Albany is the capital of New York. | |||
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Several competent city council members have been elected in Springtown, but the mayor's office has prevented the council members from significantly influencing policy.",
"The citizens of Springtown have elected several competent city council members, but the mayor's office has prevented them from significantly i... | 1 | closed choice | grade10 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun them could refer to the citizens or several competent city council members.
The citizens of Springtown have elected several competent city council members, but the mayor's office has prevented them from significantly influencing policy.
The second ... | |
Not supported with pagination yet | Which word does not rhyme? | [
"sleep",
"step",
"keep"
] | 1 | 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 sleep and keep rhyme. They both end with the eep sound.
The word step does not rhyme. It ends with a different sound. | |
Select the organism in the same species as the blue jay. | [
"Cyanocitta stelleri",
"Cyanocitta cristata",
"Ardea goliath"
] | 1 | This organism is a blue jay. Its scientific name is Cyanocitta cristata. | 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 blue jay's scientific name is Cyanocitta cristata.
Ardea goliath does not have the same scientific name as a blue jay. So, Cyanocitta cristata and Ardea goliath are not in the same species.
Cyanocitta cristata is in the same genus as Cyanocitta stelleri, but they are not in the same species.
Organisms in the same spe... | |
Select the reptile below. | [
"cane toad",
"box turtle"
] | 1 | Reptiles have scaly, waterproof skin. Most reptiles live on land. A western rattlesnake is an example of a reptile. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A box turtle is a reptile. It has scaly, waterproof skin.
Box turtles can live to be over 100 years old!
A cane toad is an amphibian. It has moist skin and begins its life in water.
Toads do not have teeth! They swallow their food whole. | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"The fleece jacket that Amy saw on the bench looked like Katie's.",
"Amy told Katie that the fleece jacket on the bench looked like hers."
] | 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 hers could refer to Amy's or Katie's.
Amy told Katie that the fleece jacket on the bench looked like hers.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is clea... | |
Which solution has a higher concentration of pink particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each pink ball represents one particle of solute. | closed choice | grade8 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the pink particles represent the solute. To figure out which solution has a higher concentration of pink particles, look at both the number of pink particles and the volume of the solvent in each container.
Use the concentration formula to find the number of pink particles per milliliter.
... | |
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 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | 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 figure of speech is used in this text?
Jessica's sweater shrank just a bit. It fits her baby sister now. | [
"apostrophe",
"understatement"
] | 1 | 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 understatement, which involves deliberately representing something as less serious or important than it really is.
Shrank just a bit is an understatement, since the baby is presumably much smaller than Jessica. | |
Which air temperature was measured within the outlined area shown? | [
"-13°C",
"-1°C",
"-4°C"
] | 0 | The map below shows air temperatures in the lower atmosphere on October 28, 2016. The outlined area shows an air mass that influenced weather in Asia on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research Laboratory... | 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.
10°C.
-13°C is within this range.
-4°C and -1°C are outside of this range. | |
Which property do these four objects have in common? | [
"flexible",
"salty",
"rough"
] | 2 | 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 rough object feels scratchy when you touch it. All four objects are rough.
A flexible object can be folded or bent without breaking easily. The sandpaper is flexible, but the sidewalk and the rock are not.
Potato chips have a salty taste. The pinea... | |
What is the capital of Pennsylvania? | [
"Montpelier",
"Frankfort",
"Harrisburg",
"Louisville"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Harrisburg is the capital of Pennsylvania. | |||
Which property do these four objects have in common? | [
"sticky",
"salty",
"stretchy"
] | 0 | Select the best answer. | closed choice | grade5 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A stretchy object gets longer when you pull on it. The melted marshmallow is stretchy, but the ice cream sundae is not.
Potato chips have a salty taste. The ice cream sundae, the jam, and the melted marshmallow are not salty.
A sticky object can atta... | |
Not supported with pagination yet | Does this passage describe the weather or the climate?
It was partly cloudy in Osaka, Japan, on Thursday. | [
"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.
It was partly cloudy in Osaka, Japan, on Thursday.
This passage tells you about the clouds in Osaka on Thursday. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Why might feeding offspring during mouthbrooding increase the reproductive success of a female blunthead cichlid? Complete the claim below that answers this question and is best supported by the passage.
Feeding offspring during mouthbrooding increases the chances that (). | [
"the female will become weak and unhealthy",
"the female's offspring will survive",
"the female will hold more offspring in her mouth"
] | 1 | Animals often behave in certain ways that can increase their reproductive success. Read the passage about a specific animal behavior. Then, follow the instructions below.
Blunthead cichlids (SIK-lids) are fish that live in Lake Tanganyika in Eastern Africa. After a female blunthead cichlid lays eggs, she holds the egg... | closed choice | grade8 | natural science | literacy-in-science | Adaptations and natural selection | How can animal behaviors affect reproductive success? Identify evidence to support a claim | Animals increase their reproductive success when they have offspring that survive to reproduce.
Animals can increase their chances of having offspring by behaving in ways that help them get partners to mate and reproduce with. These partners are called mates. For example, animals may make special sounds, perform specif... | Look for the part of the passage that describes the effect of feeding offspring during mouthbrooding. Use this information to determine why this behavior can increase the reproductive success of the female blunthead cichlid.
Choice "Blunthead cichlids (SIK-lids) are fish that live in Lake Tanganyika in Eastern Africa. ... | |
Which air temperature was measured within the outlined area shown? | [
"-4°C",
"5°C",
"-20°C"
] | 0 | The map below shows air temperatures in the lower atmosphere on November 12, 2015. The outlined area shows an air mass that influenced weather in Europe on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research Laborat... | 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.
15°C and 0°C.
-4°C is within this range.
-20°C and 5°C are outside of this range. | |
What is the capital of Virginia? | [
"Austin",
"Oklahoma City",
"Arlington",
"Richmond"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Richmond is the capital of Virginia. | |||
Which of the following could Jenny's test show? | [
"how much the drone weighed with the blade guards",
"if adding the blade guards made the drone fly poorly",
"if the blade guards would break in a crash"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | What information supports the conclusion that Gabrielle acquired this trait? | [
"Gabrielle's scar was caused by an accident. She cut her arm when she fell off her bicycle.",
"Gabrielle's sister has a bruise from falling on her elbow.",
"Gabrielle's scar is on her right elbow. Her father also has a scar on his right elbow."
] | 0 | Read the description of a trait.
Gabrielle has a scar on her right elbow. | 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.... | |
Not supported with pagination yet | What kind of sentence is this?
That screeching hurts my ears! | [
"interrogative",
"exclamatory"
] | 1 | closed choice | grade5 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence tells about something, but it shows strong feeling and ends with an exclamation point. It is an exclamatory sentence. | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"The Doyles' car has a dent in the bumper, but otherwise their car looks just like the Shens'.",
"The Doyles' car looks just like the Shens', but theirs has a dent in the bumper."
] | 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 theirs could refer to the Doyles' or the Shens'.
The Doyles' car looks just like the Shens', but theirs has a dent in the bumper.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so t... | |
Not supported with pagination yet | What kind of sentence is this?
Does Janice prefer pizza or pasta? | [
"interrogative",
"exclamatory"
] | 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. | |
Select the organism in the same genus as the agile wallaby. | [
"Macropus rufus",
"Ovis aries",
"Castor fiber"
] | 0 | This organism is an agile wallaby. Its scientific name is Macropus agilis. | 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 agile wallaby's scientific name is Macropus agilis. The first word of its scientific name is Macropus.
Ovis aries is in the genus Ovis. The first word of its scientific name is Ovis. So, Ovis aries and Macropus agilis are not in the same genus.
Macropus rufus is in the genus Macropus. The first word of its scientifi... | |
Not supported with pagination yet | What information supports the conclusion that Pamela acquired this trait? | [
"Pamela likes to photograph birds at the zoo.",
"Pamela was not born knowing how to identify different bird calls. She had to learn this skill."
] | 1 | Read the description of a trait.
Pamela 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... | |
What is the capital of Wyoming? | [
"Concord",
"Phoenix",
"Denver",
"Cheyenne"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Cheyenne is the capital of Wyoming. | |||
Not supported with pagination yet | What do these two changes have in common?
water vapor condensing on a bathroom mirror
sediment settling to the bottom of a muddy puddle | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 2 | 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.
Water vapor condensing on a bathroom mirror is a change of state. So, it is a physical change. The water changes state from gas in the air to liquid water on the mirror. But the water vapor and the liquid water are both made of water.
Loose matter such as sand and dirt is called sedimen... | |
Which better describes the Great Victoria Desert ecosystem? | [
"It has a small amount of rain. It also has dry, thin soil.",
"It has mostly small plants. It also has only a few types of organisms."
] | 0 | Figure: Great Victoria Desert.
The Great Victoria Desert is a hot desert ecosystem located in Western Australia and South Australia. | closed choice | grade4 | 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 hot desert is a type of ecosystem. Hot deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, the Great Victoria Desert has a small amount of rain. It also has dry, thin soil. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magnitude of the magnetic force between them is greater.
There is a smaller distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is greater in Pair 2 than in Pair 1. | |
Is the air from a leaf blower a solid, a liquid, or a gas? | [
"a solid",
"a liquid",
"a gas"
] | 2 | 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... | The air from a leaf blower is a gas. A gas expands to fill a space.
A leaf blower uses a fan to blow air out. When the air leaves the leaf blower, the air expands to fill a much larger space. | ||
Based on the Venn diagram, which animal has fins and breathes air? | [
"a whale",
"a fish"
] | 0 | This Venn diagram shows information about some sea animals. | closed choice | grade5 | 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... | In a Venn diagram, each circle shows things that are true for a particular topic. The middle, where the two circles overlap, shows things that are true for both topics. This Venn diagram shows information about some sea animals.
The detail whale appears in the has fins circle and in the breathes air circle. This tells ... | |
Not supported with pagination yet | What is the mass of an apple? | [
"115 kilograms",
"115 grams"
] | 1 | Select the better estimate. | closed choice | grade5 | 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 apple is 115 grams.
115 kilograms is too heavy. |
Not supported with pagination yet | Which text uses the word terribly in its traditional sense? | [
"Colette made escargots using the small snails from her garden. She prepared them according to the recipe but found the chewy texture terribly disappointing.",
"Colette decided to make escargots using the small snails from her garden, but she prepared them terribly. Since she'd forgotten to add garlic, the taste ... | 1 | closed choice | grade9 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The second text uses terribly in its traditional sense: in a terrible manner.
Colette decided to make escargots using the small snails from her garden, but she prepared them terribly. Since she'd forgotten to add garlic, the taste was disappointing.
The first text uses terribly in its nontraditional sense: extremely; v... | |
What is the probability that an American curl cat produced by this cross will be heterozygous for the ear type gene? | [
"0/4",
"3/4",
"2/4",
"4/4",
"1/4"
] | 2 | In a group of American curl cats, some individuals have curled ears and others have straight ears. In this group, the gene for the ear type trait has two alleles. The allele for straight ears (e) is recessive to the allele for curled ears (E).
This Punnett square shows a cross between two American curl cats. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | ||
Which animal's feet are also adapted for sticking to smooth surfaces? | [
"domestic cat",
"slender-legged tree frog"
] | 1 | House geckos are found in most warm places around the world. Many s live inside people's houses. They are good at climbing walls and ceilings. The feet of the are adapted for sticking to smooth surfaces.
Figure: house gecko. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
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 house gecko.
The house gecko has wide, sticky toes. Its feet are adapted for sticking to smooth surfaces. The house gecko uses its toes to walk on the smooth surfaces of leaves without slipping.
Now look at each animal. Figure out which animal has a similar adaptation.
The slender-legged tree... | |
Not supported with pagination yet | What do these two changes have in common?
a piece of apple turning brown
a banana getting ripe on the counter | [
"Both are chemical changes.",
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are caused by heating."
] | 0 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
A 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 t... | |
Not supported with pagination yet | Based on this information, what is Millie's phenotype for the fur type trait? | [
"straight fur",
"curly fur"
] | 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).
Millie is a cat from this group. Millie has the homozygous genotype ff for the fur type gene. | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Millie's genotype for the fur type gene is ff. Millie's genotype of ff has only f alleles. The f allele is for curly fur. So, Millie's phenotype for the fur type trait must be curly fur.
To check this answer, consider whether Millie's alleles are dominant or recessive. The allele for curly fur (f) is recessive to the a... |
Not supported with pagination yet | In 1800, where did most Americans live? | [
"near the Atlantic Coast",
"along the Mississippi River",
"along the Gulf of Mexico",
"west of the Appalachian Mountains"
] | 0 | closed choice | grade5 | social science | us-history | Early 19th century American history | The Lewis and Clark Expedition | In 1800, the United States looked like this. The western boundary was the Mississippi River.
However, most Americans lived within 50 miles of the Atlantic Coast. The darker parts of the map show where the most people lived. The rest of the country was mostly populated by Native American groups.
This map uses census rec... | ||
Based on the timeline, which statement is true? | [
"The Declaration of Independence was signed before the Revolutionary War began.",
"The Declaration of Independence was signed after the Revolutionary War ended.",
"The Second Continental Congress was established after the Revolutionary War began."
] | 2 | Look at the timeline of events from the Revolutionary War. Then answer the question below. | closed choice | grade8 | social science | us-history | The American Revolution | The Revolutionary War: struggle for independence | |||
Not supported with pagination yet | Which figure of speech is used in this text?
The old wooden rocking chair that Bridget brought home from the rummage sale was as comfortable as a bed of nails. | [
"alliteration",
"verbal irony"
] | 1 | 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.
As comfortable as a bed of nails shows verbal irony because sitting on nails would not be comfortable. | |
What is the probability that a rainbow trout produced by this cross will be homozygous dominant for the body color gene? | [
"1/4",
"0/4",
"2/4",
"4/4",
"3/4"
] | 1 | In a group of rainbow trout, some individuals have a greenish-brown body and others have a blue body. In this group, the gene for the body color trait has two alleles. The allele for a greenish-brown body (B) is dominant over the allele for a blue body (b).
This Punnett square shows a cross between two rainbow trout. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate probabilities of offspring types | Offspring genotypes: homozygous or heterozygous?
How do you determine whether an organism is homozygous or heterozygous for a gene? Look at the alleles in the organism's genotype for that gene.
An organism with two identical alleles for a gene is homozygous for that gene.
If both alleles are dominant, the organism is h... | ||
Not supported with pagination yet | Which is a compound sentence? | [
"The butcher cuts the fat off the meat.",
"Pedro can iron this shirt, or he can wear a different one."
] | 1 | closed choice | grade3 | 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 second sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction or.
Pedro can iron this shirt, or he can wear a different one. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Kinsley swore she would never go back to Oak Grove, but I told her she should never say never. The city might be a very different place in ten years. | [
"oxymoron",
"paradox"
] | 1 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a paradox, a statement that might at first appear to be contradictory, but that may in fact contain some truth.
Never say never at first appears to be contradictory: by saying the phrase itself, you have already said never. However, it contains some truth: people often change their minds as they age and s... | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The long-ignored book sat () on the nightstand. | [
"unread",
"patiently"
] | 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 patiently. It describes the book as if it were a patient person. | |
What is the capital of Nebraska? | [
"Omaha",
"Lincoln",
"Jefferson City",
"Lansing"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | |||
Not supported with pagination yet | Select the liquid. | [
"thread",
"milk",
"air inside a tire",
"tortoise shell"
] | 1 | closed choice | grade3 | natural science | physics | States of matter | Identify solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | The air inside a tire is a gas. A gas expands to fill a space. The air in a tire expands to fill all the space inside the tire. If air leaks out, it will expand into the space around the tire.
Thread is a solid that can be bent or tangled. But it still has a size and shape of its own.
A tortoise shell is a solid. A sol... | |
Which statement describes the Serengeti National Park ecosystem? | [
"It has soil that is poor in nutrients.",
"It has cool summers and long, cold winters."
] | 0 | Figure: Serengeti National Park.
Serengeti National Park is a savanna grassland ecosystem in Tanzania, a country in eastern Africa. Many types of animals migrate through the park each year. | closed choice | grade7 | 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 Serengeti National Park ecosystem: warm summers and warm winters, a rainy season and a... | |
Not supported with pagination yet | Would you find the word adopt on a dictionary page with the following guide words?
about - ashes | [
"yes",
"no"
] | 0 | yes or no | grade8 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since adopt is between the guide words about - ashes, it would be found on that page. | |
Not supported with pagination yet | Would you find the word going on a dictionary page with the following guide words?
glove - guitar | [
"no",
"yes"
] | 1 | yes or no | grade2 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since going is between the guide words glove - guitar, it would be found on that page. | |
Identify the question that Mateo's experiment can best answer. | [
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?",
"Can pennies hold more drops of pure water or water mixed with hand soap?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Mateo used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Mateo recorded the number of drops he could add before the wa... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Which figure of speech is used in this text?
He that is of the opinion money will do everything may well be suspected of doing everything for money.
—Benjamin Franklin, Poor Richard's Almanack | [
"chiasmus",
"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 chiasmus, an expression in which the second half parallels the first but reverses the order of words.
The second half of the sentence reverses the order of the words money and everything relative to the first half. | |
Not supported with pagination yet | Read the following excerpt from a student essay. How can the writer best improve his or her sentence fluency?
A 2013 study by Arizona State University's W. P. Carey School of Business examined the relationship between customers and companies in the United States. According to the study, customer satisfaction remains lo... | [
"by varying how sentences begin",
"by combining sentences that contain similar information",
"by using shorter sentences"
] | 1 | closed choice | grade11 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | During peer review, you read and respond to a fellow student's writing. While there are many methods and strategies that you can use for reviewing a text, it is generally helpful to frame your suggestions in concrete and constructive ways and to consider the following areas for revision:
Ideas and development: Does the... | The writer could best improve his or her sentence fluency by combining sentences that contain similar information.
For example, the writer could turn the underlined text into one sentence, such as According to the study, customer satisfaction levels remain low, on par with those reported in the 1970 s.
A 2013 study by ... | |
Which property do these four objects have in common? | [
"opaque",
"sweet",
"translucent"
] | 2 | 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 translucent object lets light through. But you cannot see clearly through a translucent object. All four objects are translucent.
An opaque object does not let light through. None of the objects are opaque.
Sugar has a sweet taste. The honey is swe... | |
Which solution has a higher concentration of blue particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | 0 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | 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 blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"your niece,\nEmily",
"Your niece,\nEmily"
] | 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 second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Using only these supplies, which question can Gina investigate with an experiment? | [
"Does a rubber ball travel farther when launched from a metal catapult or from a wooden catapult?",
"Does a heavier ball travel farther than a lighter ball when launched from a catapult?",
"Does a catapult with a longer arm launch a rubber ball farther than a catapult with a shorter arm?"
] | 2 | Gina visits a museum about ancient Greece. She notices an exhibit with models of wooden catapults that were used to launch large rocks across battlefields. She wonders what factors affect how far a catapult can launch an object. So, she decides to design an experiment. She has the following supplies available:
a wooden... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
What is the name of the colony shown? | [
"Virginia",
"Michigan",
"Kentucky",
"Maryland"
] | 0 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony. | |||
Not supported with pagination yet | What kind of sentence is this?
Meet me at my house at noon. | [
"interrogative",
"imperative"
] | 1 | closed choice | grade4 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence tells someone to do something, so it is an imperative sentence. Here, it ends with a period. | |
What is the capital of New Mexico? | [
"Olympia",
"Salem",
"Denver",
"Santa Fe"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Santa Fe is the capital of New Mexico. | |||
Not supported with pagination yet | Is the following trait inherited or acquired?
Dana can play the flute. | [
"acquired",
"inherited"
] | 0 | Hint: Playing an instrument well takes practice. | closed choice | grade3 | natural science | biology | Heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | People are not born knowing how to play the flute. Instead, some people learn how to play. So, playing the flute is an acquired trait. |
What is the capital of Colorado? | [
"Sacramento",
"Phoenix",
"Cheyenne",
"Denver"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Denver is the capital of Colorado. | |||
What is the name of the colony shown? | [
"Ohio",
"Virginia",
"Pennsylvania",
"South Carolina"
] | 2 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Pennsylvania. | |||
Which is this organism's scientific name? | [
"frilled lizard",
"Chlamydosaurus kingii"
] | 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, Chlamydosaurus kingii is the scientific name. | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud... | |
Which solution has a higher concentration of yellow particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 1 | 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... | |
What evidence of a volcanic eruption does this picture show? | [
"There is snow on the volcano.",
"There is smoke coming out of the volcano."
] | 1 | This picture was taken during a volcanic eruption. A volcanic eruption happens when melted rock comes out from under the ground. | closed choice | grade2 | natural science | earth-science | Earth events | Find evidence of changes to Earth's surface | Evidence is information that tells you something happened.
How do you look for evidence of a change to Earth's surface?
There are many ways to find evidence of a change to Earth's surface. One way is to look at a picture that was taken after the change.
Here are some examples of what the evidence for different changes ... | ||
Not supported with pagination yet | What do these two changes have in common?
saliva breaking down a piece of bread
silver jewelry tarnishing | [
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling.",
"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.
Saliva breaking down a piece of bread is a chemical change. Bread is made up mostly of a chemical called starch. Saliva breaks the bonds between atoms in the starch molecules.
The atoms then link together to form smaller, simpler molecules of sugar. The sugar is a different type of matt... | |
What is the capital of Connecticut? | [
"Hartford",
"Providence",
"Bridgeport",
"Cedar Rapids"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Hartford is the capital of Connecticut. | |||
Which bird's beak is also adapted to catch insects? | [
"military macaw",
"common swift"
] | 1 | Superb fairywrens eat insects and other small invertebrates. The shape of the 's beak is adapted to catch insects.
Figure: superb fairywren. | 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 a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ... | Look at the picture of the superb fairywren.
A short, thin beak is light and easy to move. The superb fairywren uses its beak to grab fast-moving insects while flying.
Now look at each bird. Figure out which bird has a similar adaptation.
The common swift has a short, thin beak. Its beak is adapted to catch insects.
Th... | |
Not supported with pagination yet | Would you find the word peril on a dictionary page with the following guide words?
path - plaster | [
"no",
"yes"
] | 1 | yes or no | grade4 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since peril is between the guide words path - plaster, it would be found on that page. | |
Which animal's legs are also adapted for wading? | [
"kookaburra",
"painted stork"
] | 1 | Flamingos live near marshes, rivers, and oceans. They eat small crustaceans that live in shallow water. Flamingos get their food by walking through water, or wading.
The 's legs are adapted for wading. They are lightweight and keep the bird's body above the water.
Figure: flamingo. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the flamingo.
Long legs help the flamingo keep its body above the surface of the water while wading. Thin legs are easier to move through the water.
Now look at each animal. Figure out which animal has a similar adaptation.
The painted stork has long, thin legs. Its legs are adapted for wading.
T... | |
Identify the question that Florence's experiment can best answer. | [
"Does the amount of water in a glass affect whether eggs sink or float in the water?",
"Are eggs more likely to float in fresh water or salty water?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Florence poured four ounces of water into each of six glasses. Florence dissolved one tablespoon of salt in each of three glasses, and did not add salt to the other three. Then, Florence placed an egg in one glass and o... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Which property do these two objects have in common? | [
"smooth",
"slippery"
] | 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 slippery object is hard to hold onto or stand on. The bowling ball is slippery, but the wooden ruler is not.
A smooth object is not scratchy or rough. Both objects are smooth.
The property that both objects have in common is smooth. | |
Not supported with pagination yet | What kind of sentence is this?
I can't believe this is Linda's first time seeing the Pacific Ocean! | [
"interrogative",
"exclamatory",
"declarative"
] | 1 | closed choice | grade7 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence tells about something, but it shows surprise and ends with an exclamation point. It is an exclamatory sentence. | |
Not supported with pagination yet | Does this passage describe the weather or the climate?
Between June and December in the Philippines, up to 27 centimeters of rain can fall each month. | [
"weather",
"climate"
] | 1 | 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.
Between June and December in the Philippines, up to 27 centimeters of rain can fall each month.
This passage tells you about the usual precipitation in the Philippines. It does not describe what the weather is like on a particular day. So, this passage describes the climate. |
Which state is highlighted? | [
"Michigan",
"Iowa",
"Illinois",
"Ohio"
] | 1 | closed choice | grade5 | social science | geography | States | Identify states of the Midwest | This state is Iowa. | |||
Not supported with pagination yet | Compare the motion of two speedboats. Which speedboat was moving at a higher speed? | [
"a speedboat that moved 180miles in 5hours",
"a speedboat that moved 285miles 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 speedboat moved and the time it took to move that distance.
One speedboat moved 285 miles in 5 hours.
The other speedboat moved 180 miles in 5 hours.
Notice that each speedboat spent the same amount of time moving. The speedboat that moved 285 miles moved a farther distance in that time. So, t... | |
Which ocean is highlighted? | [
"the Pacific Ocean",
"the Southern Ocean",
"the Indian Ocean",
"the Atlantic Ocean"
] | 2 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Indian Ocean. | ||
Not supported with pagination yet | What is the mass of an elephant? | [
"5,030 grams",
"5,030 kilograms"
] | 1 | Select the better estimate. | closed choice | grade5 | 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 5,030 kilograms.
5,030 grams is too light. |
Identify the question that Greg's experiment can best answer. | [
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?",
"Does temperature affect how much bacteria can grow in liquid?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Greg mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He al... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Which sentence uses a metaphor? | [
"Zeke's eyes are as green as emeralds.",
"Zeke's eyes are bright green emeralds."
] | 1 | closed choice | grade5 | language science | figurative-language | Literary devices | Identify similes and metaphors | Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A che... | This sentence uses a metaphor:
Zeke's eyes are bright green emeralds.
The words eyes and emeralds are compared without the word like or as.
This sentence uses a simile:
Zeke's eyes are as green as emeralds.
The words eyes and emeralds are compared using the word as. | |
Not supported with pagination yet | How long is a potato? | [
"15 meters",
"15 kilometers",
"15 centimeters",
"15 millimeters"
] | 2 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using metric units, length can be written with units of millimeters, centimeters, meters, or kilometers. One meter contains 100 centimeters or 1,000 millimeters. So, 1 meter is lar... | The best estimate for the length of a potato is 15 centimeters.
15 millimeters is too short. 15 meters and 15 kilometers are too long. |
Which material is this jar made of? | [
"glass",
"rock"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Identify multiple materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood. | Look at the picture of the jar.
The jar is made of two different materials. The lid is made of metal. The rest of the jar is made of glass. | ||
Is the following statement about our solar system true or false?
Earth is the largest planet that is made mainly of rock. | [
"false",
"true"
] | 1 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | The table tells you that Mercury, Venus, Earth, and Mars are the planets made mainly of rock. Of these planets, Earth is the largest. So, Earth is the largest planet that is made mainly of rock. | |
Which of these continents does the equator intersect? | [
"Asia",
"Australia",
"Antarctica"
] | 0 | closed choice | grade5 | 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 Australia or Antarctica. | ||
Not supported with pagination yet | Which figure of speech is used in this text?
The residents of Detroit will be delighted by today's forecast; they can expect another unpleasant weekend of heavy snow, sleet, and ice. | [
"simile",
"verbal irony"
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses verbal irony, which involves saying one thing but implying something very different.
Delighted shows verbal irony because the residents of Detroit are probably annoyed, not delighted, about another weekend of unpleasant weather. | |
What is the capital of Florida? | [
"Tallahassee",
"Orlando",
"Baton Rouge",
"Tampa"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Tallahassee is the capital of Florida. | |||
Not supported with pagination yet | What does the hyperbole in this text suggest?
After he finished the marathon, Jacob collapsed into a chair and declared that he could no longer move a single muscle. | [
"Jacob was very tired and sore.",
"Jacob became paralyzed."
] | 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.
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 could no longer move a single muscle suggests that Jacob was very tired and sore. His muscles were not literally incapable of moving. | |
Not supported with pagination yet | Which sentence states a fact? | [
"Diamond Head crater in Hawaii attracts about 900,000 visitors annually.",
"The hour-long hike up Diamond Head crater is too strenuous."
] | 0 | closed choice | grade12 | language science | writing-strategies | Developing and supporting arguments | Distinguish facts from opinions | Statements of fact make claims that are based on research, observation, or experimentation. Facts can be proved with evidence.
Napoleon Bonaparte was shorter than King Louis XVI.
This statement is a fact. The statement can be verified by researching and comparing the height of each man.
Statements of opinion make claim... | The first sentence states a fact. It can be verified by looking up how many people visit Diamond Head crater every year.
Diamond Head crater in Hawaii attracts about 900,000 visitors annually.
The second sentence states an opinion. Too strenuous indicates a personal judgment.
The hour-long hike up Diamond Head crater i... | |
Which solution has a higher concentration of yellow particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same"
] | 0 | The diagram below is a model of two solutions. Each yellow 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 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... | |
Not supported with pagination yet | Which sentence states a fact? | [
"When the U.S. government borrows money, the national debt grows.",
"The United States borrows too much money from foreign countries."
] | 0 | closed choice | grade4 | 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 first sentence states a fact.
When the U.S. government borrows money, the national debt grows.
It can be proved by reading a book or an article about economics.
The second sentence states an opinion.
The United States borrows too much money from foreign countries.
Too much shows what a person believes, thinks, or f... |
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.