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Not supported with pagination yet | Suppose Bella decides to take a trip to Michigan. Which result would be a cost? | [
"Bella will give up the chance to go to North Dakota. She would have enjoyed a trip to North Dakota more than Michigan.",
"Bella will save some money. Plane tickets for Bella to get to Michigan are less expensive than tickets to North Dakota."
] | 0 | Bella is deciding whether to take a trip to North Dakota or Michigan. She wants to enjoy her trip. But she is also trying to save money. | closed choice | grade5 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Bella wants or needs:
Bella will give up the chance to go to North Dakota. She would have enjoyed a trip to North Dakota more than Michigan. |
Not supported with pagination yet | How long is a car? | [
"5 inches",
"5 yards"
] | 1 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that a pencil is 8 long. You might be thinking, 8 what? Is the pencil 8 inches long? 8 feet? 8 miles?
The number 8 on its own does not give you much information about the len... | The better estimate for the length of a car is 5 yards.
5 inches is too short. |
Complete the statement.
Ammonia is (). | [
"an elementary substance",
"a compound"
] | 1 | The model below represents a molecule of ammonia. Most of the ammonia produced every year is used by farmers to help crops grow. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | All substances are 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 some element... | Count the number of chemical elements represented in the model. Then, decide if ammonia is an elementary substance or a compound.
In this model, each ball is labeled with N for nitrogen or H for hydrogen. So, the model shows you that ammonia is made of two chemical elements bonded together.
Substances made of two or mo... | |
Not supported with pagination yet | What do these two changes have in common?
tearing a piece of paper
shaking up salad dressing | [
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by heating."
] | 1 | 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.
Tearing a piece of paper is a physical change. The paper tears into pieces. But each piece is still made of paper.
Shaking up salad dressing is a physical change. The different parts mix together, but they are still made of the same type of matter.
Step 2: Look at each answer choice.
Bo... | |
Not supported with pagination yet | What is the mass of the Statue of Liberty? | [
"225 tons",
"225 pounds",
"225 ounces"
] | 0 | Select the best estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose customary units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of the Statue of Liberty is 225 tons.
225 ounces and 225 pounds are both too light. |
Select the fish below. | [
"clownfish",
"gray wolf"
] | 0 | Fish live underwater. They have fins, not limbs. A bull shark is an example of a fish. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A gray wolf is a mammal. It has fur and feeds its young milk.
Wolves often live in family groups. A wolf mother, father, and their children travel together.
A clownfish is a fish. It lives underwater. It has fins, not limbs.
Clownfish live with animals called anemones. In the image of the clownfish, you can see the gre... | |
Which of these cities is marked on the map? | [
"San Antonio",
"Charlotte",
"Nashville",
"Oklahoma City"
] | 3 | closed choice | grade4 | social science | geography | Cities | Cities of the Southeast | The city is Oklahoma City, Oklahoma. Charlotte, San Antonio, and Nashville are marked with gray circles on the map below. | |||
Not supported with pagination yet | Select the mammal. | [
"penguin",
"keel-billed toucan",
"American bullfrog",
"koala"
] | 3 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Mammals have hair or fur and feed their young milk. | A koala is a mammal. It has fur and feeds its young milk.
Koalas sleep for up to 20 hours a day!
A penguin is a bird. It has feathers, two wings, and a beak.
Penguins live near water. Penguins cannot fly! They use their wings to swim.
A keel-billed toucan is a bird. It has feathers, two wings, and a beak.
Toucans have ... | |
Which country is highlighted? | [
"Saint Kitts and Nevis",
"Antigua and Barbuda",
"Cuba",
"Saint Lucia"
] | 0 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Kitts and Nevis. | |||
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 | grade7 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | 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 ... | |
What is the name of the colony shown? | [
"Virginia",
"Wisconsin",
"New Hampshire",
"North Carolina"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | |||
Not supported with pagination yet | How long is a long-distance running race? | [
"11 millimeters",
"11 meters",
"11 kilometers",
"11 centimeters"
] | 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 long-distance running race is 11 kilometers.
11 millimeters, 11 centimeters, and 11 meters are all too short. |
Not supported with pagination yet | What information supports the conclusion that Jamie acquired this trait? | [
"Jamie can cook food over a fire.",
"Jamie learned how to build a fire at summer camp."
] | 1 | Read the description of a trait.
Jamie knows how to build a fire. | 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 | What do these two changes have in common?
slicing cheese
carving a piece of wood | [
"Both are caused by heating.",
"Both are chemical changes.",
"Both are caused by cooling.",
"Both are only physical changes."
] | 3 | closed choice | grade3 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
Slicing cheese is a physical change. The cheese changes shape. But it is still made of the same type of matter.
Carving a piece of wood is a physical change. The wood changes shape, but it is still made of the same type of matter.
Step 2: Look at each answer choice.
Both are only physic... | |
Not supported with pagination yet | Which figure of speech is used in this text?
I must have eaten too much of Jacob's homemade chili, because now I'm so full I could explode! | [
"paradox",
"hyperbole"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses hyperbole, an obvious exaggeration that is not meant to be taken literally.
So full I could explode is an exaggeration, since it is clear that the speaker is not actually in danger of exploding. | |
Which property do these four objects have in common? | [
"sour",
"smooth",
"flexible"
] | 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 smooth object is not scratchy or rough. All four objects are smooth.
A flexible object can be folded or bent without breaking easily. The helium balloons and the metal paper clip are flexible, but the glass is not.
A lemon has a sour taste. The gla... | |
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."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Scott got off the mountain by the skin of his teeth. | [
"the Bible",
"a movie"
] | 0 | closed choice | grade8 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion by the skin of his teeth is the Bible.
In the Bible, Job complains to God about his hardships, saying that both strangers and those he loves have turned against him. He says, "My bone cleaveth to my skin and to my flesh, and I am escaped with the skin of my teeth." Scholars have long debated ... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
pleasant - push | [
"protect",
"parrot"
] | 0 | closed choice | grade3 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since protect is between the guide words pleasant - push, it would be found on that page. | |
Not supported with pagination yet | Select the one substance that is not a rock. | [
"Brass is made by humans. It is not a pure substance.",
"Shale is a solid. It is not a pure substance.",
"Granodiorite is not a pure substance. It is a solid."
] | 0 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify rocks using properties | Rocks are made of minerals. Here are some properties of rocks:
They are solid.
They are formed in nature.
They are not made by living things.
They are not pure substances. | Compare the properties of each substance to the properties of rocks. Select the substance whose properties do not match those of rocks.
Brass is made by humans. But rocks are not made by living things.
So, brass is not a rock.
Granodiorite is a rock.
Shale is a rock. | |
Not supported with pagination yet | What information supports the conclusion that Marie inherited this trait? | [
"Marie and her mother both wear their hair in braids.",
"Marie's parents have red hair. They passed down this trait to Marie."
] | 1 | Read the description of a trait.
Marie has red hair. | closed choice | grade3 | natural science | biology | Heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Which statement describes the Gran Sabana ecosystem? | [
"It has cool summers and long, cold winters.",
"It has a small amount of rain.",
"It has soil that is poor in nutrients."
] | 2 | Figure: Gran Sabana.
The Gran Sabana is a savanna grassland ecosystem in southeastern Venezuela. This savanna has many flat-topped mountains called mesas. | 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 statement describes the Gran Sabana ecosystem: warm summers and warm winters, a rainy season and a dry season,... | |
Which property matches this object? | [
"yellow",
"flexible"
] | 1 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
Yellow is a color.
This color is yellow. The rubber band is not yellow.
A flexible object can be folded or bent without breaking easily. The rubber band is flexible. | |
Not supported with pagination yet | Would you find the word and on a dictionary page with the following guide words?
afraid - area | [
"yes",
"no"
] | 0 | yes or no | grade2 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since and is between the guide words afraid - area, it would be found on that page. | |
Which i in column 3? | [
"the gas station",
"the grocery store",
"the fire department",
"the park"
] | 2 | closed choice | grade3 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The fire department is in column 3. | ||
What is the capital of Rhode Island? | [
"Newport",
"Providence",
"Montpelier",
"Concord"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | |||
Select the bird below. | [
"mandarinfish",
"American bullfrog",
"emerald hummingbird",
"California toad"
] | 2 | Birds have feathers, two wings, and a beak.
Birds are warm-blooded. Warm-blooded animals can control their body temperature.
An ostrich is an example of a bird. | closed choice | grade4 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals. | An American bullfrog is an amphibian. It has moist skin and begins its life in water.
Frogs live near water or in damp places. Most frogs lay their eggs in water.
A mandarinfish is a fish. It lives underwater. It has fins, not limbs.
Mandarinfish often live near coral reefs. They eat small worms, snails, and fish eggs.... | |
What is the capital of Oregon? | [
"Boise",
"Portland",
"Albuquerque",
"Salem"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Salem is the capital of Oregon. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
When the coach asked whether we wanted to try out the new trampoline, we jumped at the chance. | [
"pun",
"simile"
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses a pun, a word or phrase that humorously suggests more than one meaning.
Jumped means showed eagerness. It also refers to what people do on a trampoline. | |
Not supported with pagination yet | Select the living thing. | [
"iceberg",
"pushpin",
"strawberry bush",
"soap bubble"
] | 2 | closed choice | grade4 | natural science | biology | Classification | Identify living and nonliving things | All living things are made up of cells. Plants, animals, and some fungi have many cells. Other living things are made up of just one cell.
All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. They use energy from food to grow and change.
All... | An iceberg is not a living thing.
An iceberg does not have all the traits of a living thing. It may grow or melt in response to the world around it, but it does not need food.
A pushpin is not a living thing.
Pushpins do not have all of the traits of living things. They do not grow or respond to their environment. They... | |
Which animal's skin is better adapted for protection against a predator with sharp teeth? | [
"kingsnake",
"southern three-banded armadillo"
] | 1 | Giant pangolins are adapted to defend their bodies against a predator with sharp teeth. They have hard scales covering much of their skin. When frightened, the can roll into a ball to protect the soft parts of its body.
Figure: giant pangolin. | 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 giant pangolin.
The giant pangolin has hard scales on its skin. Its skin is adapted for protection against a predator with sharp teeth. The scales make it difficult for predators to hurt or kill the giant pangolin.
Now look at each animal. Figure out which animal has a similar adaptation.
The... | |
Not supported with pagination yet | Which figure of speech is used in this text?
Rosanne's Boutique claims to have "something for everyone," but it is generally understood that their target market is women of a certain age. | [
"euphemism",
"oxymoron"
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Of a certain age is an indirect and generally more polite way of referring to older people. | |
Not supported with pagination yet | Complete the sentence.
An igneous rock becoming a metamorphic rock is a (). | [
"physical change",
"chemical change"
] | 1 | closed choice | grade5 | natural science | chemistry | Physical and chemical change | 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 new molecules. The types of molecules in matter before an... | An igneous rock becoming a metamorphic rock is a chemical change. Over millions of years, heat and pressure can break the chemical bonds in the molecules of the igneous rock.
When this happens, a new rock with different molecules is formed. The metamorphic rock is made up of a different type of matter than the igneous ... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
My sister takes the lion's share of the space in our closet. | [
"a fable",
"a song"
] | 0 | closed choice | grade7 | 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 the lion's share is a fable.
In one of Aesop's fables, four animals go on a hunt assuming that they will split their prize equally, but the lion, the most powerful animal, takes more than the other members of the group.
The allusion the lion's share means the largest portion. | |
Not supported with pagination yet | Complete the sentence.
Bubbles forming when baking soda and vinegar are mixed is a (). | [
"chemical change",
"physical change"
] | 0 | closed choice | grade3 | natural science | chemistry | Physical and chemical change | Identify physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Burning a piece of paper is a chemical change. When paper gets hot enough, it reacts with oxygen in the air and burn... | Bubbles forming when baking soda and vinegar are mixed is a chemical change. The baking soda and vinegar change into different types of matter. Some of this matter bubbles up as a gas. | |
Not supported with pagination yet | What is the volume of a water bottle? | [
"3 cups",
"3 fluid ounces",
"3 gallons"
] | 0 | Select the best estimate. | closed choice | grade4 | 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 water bottle is 3 cups.
3 fluid ounces is too little and 3 gallons is too much. |
Not supported with pagination yet | Which type of sentence is this?
Becky is a competitive horseback rider, and she will be competing in the next World Equestrian Games, which are held every four years. | [
"compound",
"complex",
"simple",
"compound-complex"
] | 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-complex. It is made up of two independent clauses and a dependent clause. The dependent clause begins with the relative pronoun which.
Becky is a competitive horseback rider, and she will be competing in the next World Equestrian Games, which are held every four years. | |
What is the capital of Nebraska? | [
"Montpelier",
"Indianapolis",
"Omaha",
"Lincoln"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | |||
Not supported with pagination yet | Based on this information, what is this fly's phenotype for the body color trait? | [
"a gray body",
"a black body"
] | 1 | In a group of fruit flies, some individuals have a gray body and others have a black body. In this group, the gene for the body color trait has two alleles. The allele for a gray body (B) is dominant over the allele for a black body (b).
A certain fruit fly from this group has the homozygous genotype bb for the body co... | 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 ... | The fruit fly's genotype for the body color gene is bb. The fruit fly's genotype of bb has only b alleles. The b allele is for a black body. So, the fruit fly's phenotype for the body color trait must be a black body.
To check this answer, consider whether the fruit fly's alleles are dominant or recessive. The allele f... |
Not supported with pagination yet | Which tense does the sentence use?
Jenna orders a roast beef sandwich. | [
"present tense",
"past tense",
"future tense"
] | 0 | closed choice | grade3 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, orders. The verb ends in -s and tells you about something that is true or happening now. | |
Which country is highlighted? | [
"Antigua and Barbuda",
"Grenada",
"Jamaica",
"Haiti"
] | 2 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Jamaica. | |||
Not supported with pagination yet | Based on this information, what is this plant's phenotype for the stem height trait? | [
"a tall stem",
"a short stem"
] | 0 | In a group of pea plants, some individuals have a tall stem and others have a short stem. In this group, the gene for the stem height trait has two alleles. The allele for a short stem (h) is recessive to the allele for a tall stem (H).
A certain pea plant from this group has the heterozygous genotype Hh for the stem h... | 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 ... | You need to determine the pea plant's phenotype for the stem height trait. First, consider the alleles in the plant's genotype for the stem height gene. Then, decide whether these alleles are dominant or recessive.
The allele for a short stem (h) is recessive to the allele for a tall stem (H). This means H is a dominan... |
Which material is this plate made of? | [
"paper",
"rock"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the plate.
The plate is made of paper.
You can break down paper plates by mixing them with food scraps and adding worms! The worms and other living things break down the mix into soil. Breaking down objects into soil is called composting. | ||
Identify the question that Mike's experiment can best answer. | [
"Do cardinals eat more seeds per visit from feeders containing sunflower seeds compared to feeders containing flax seeds?",
"Do cardinals visit feeders containing sunflower seeds more often than feeders containing flax seeds?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Mike set up five pairs of platform bird feeders around his yard. He filled one feeder in each pair with sunflower seeds and the other feeder with flax seeds. For one week, Mike watched cardinals visiting the feeders dur... | closed choice | grade7 | 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 phrase has a more negative connotation? | [
"steal something",
"take something"
] | 0 | closed choice | grade4 | language science | vocabulary | Shades of meaning | Positive and negative connotation | Connotation is the feeling or idea that goes along with a word or phrase. Some words are close in meaning but have different connotations.
For example, think about the words eager and impatient. They both mean wanting something to happen, but they have different connotations.
Eager has a positive connotation. It is a n... | Steal something has a more negative connotation. If you steal something, you take it without asking. | |
What is the expected ratio of offspring that have Marfan syndrome to offspring that do not have Marfan syndrome? Choose the most likely ratio. | [
"3:1",
"2:2",
"4:0",
"0:4",
"1:3"
] | 1 | This passage describes the Marfan syndrome trait in humans:
Marfan syndrome is a condition that affects a protein called fibrillin. Fibrillin helps support many parts of the human body and also affects growth. Humans with Marfan syndrome tend to be taller than average and have long limbs, fingers, and toes. They may al... | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring that do or do not have Marfan syndrome, consider whether each phenotype is the dominant or recessive allele's version of the Marfan syndrome trait. The question tells you that the M allele, which is for having Marfan syndrome, is dominant over the m ... | |
Not supported with pagination yet | What is the volume of a kiddie pool? | [
"1,015 liters",
"1,015 milliliters"
] | 0 | Select the better estimate. | closed choice | grade4 | 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 kiddie pool is 1,015 liters.
1,015 milliliters is too little. |
Not supported with pagination yet | Which figure of speech is used in this text?
Kamal returned to the parking lot to find his car somewhat destroyed. Apparently someone had crashed into it while he was working and had broken the entire front windshield. | [
"oxymoron",
"euphemism"
] | 0 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses an oxymoron, a joining of two seemingly contradictory terms.
Somewhat destroyed is a contradiction, because somewhat means partially or moderately, and destroyed implies totally wrecked. | |
What is the capital of Idaho? | [
"Boulder",
"Nampa",
"Boise",
"Phoenix"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Boise is the capital of Idaho. | |||
Not supported with pagination yet | Which ping pong ball has more thermal energy? | [
"the colder ping pong ball",
"the hotter ping pong ball"
] | 1 | Two ping pong balls are identical except for their temperatures. | closed choice | grade5 | natural science | physics | Heat and thermal energy | How are temperature and mass related to thermal energy? | The two ping pong balls are made of the same material and have the same mass. So, the hotter ping pong ball has more thermal energy. | |
What is the capital of Maine? | [
"Portland",
"Albany",
"Augusta",
"Harrisburg"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | |||
Not supported with pagination yet | Which word does not rhyme? | [
"dive",
"five",
"dime"
] | 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 five and dive rhyme. They both end with the ive sound.
The word dime does not rhyme. It ends with a different sound. | |
Which solution has a higher concentration of purple particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 2 | The diagram below is a model of two solutions. Each purple 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 purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... | |
Which better describes the Gunung Leuser National Park ecosystem? | [
"It has soil that is poor in nutrients. It also has only a few types of organisms.",
"It has year-round rain. It also has soil that is poor in nutrients."
] | 1 | Figure: Gunung Leuser National Park.
Gunung Leuser National Park is a tropical rain forest ecosystem in Sumatra, an island in western Indonesia. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, Gunung Leuser National Park has year-round rain. It also has soil that is poor in nutrients. | |
What is the capital of Colorado? | [
"Denver",
"Nampa",
"Frankfort",
"Helena"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Denver is the capital of Colorado. | |||
Not supported with pagination yet | Based on this information, what is Pacha's phenotype for the fur length trait? | [
"long fur",
"short fur"
] | 0 | In a group of cats, some individuals have short fur and others have long fur. In this group, the gene for the fur length trait has two alleles. The allele for short fur (F) is dominant over the allele for long fur (f).
Pacha is a cat from this group. Pacha has the homozygous genotype ff for the fur length 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 ... | Pacha's genotype for the fur length gene is ff. Pacha's genotype of ff has only f alleles. The f allele is for long fur. So, Pacha's phenotype for the fur length trait must be long fur.
To check this answer, consider whether Pacha's alleles are dominant or recessive. The allele for short fur (F) is dominant over the al... |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 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 | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | |
Not supported with pagination yet | Which sentence states a fact? | [
"African American explorer Matthew Henson was the bravest explorer of the 1909 North Pole expedition.",
"In 1909, African American explorer Matthew Henson became one of the first people to reach the North Pole."
] | 1 | 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 second sentence states a fact. It can be verified by researching the life of Matthew Henson.
In 1909, African American explorer Matthew Henson became one of the first people to reach the North Pole.
The first sentence states an opinion. Bravest indicates a personal judgment.
African American explorer Matthew Henson... | |
Not supported with pagination yet | Select the solid. | [
"milk",
"water in a bathtub",
"rubber duck"
] | 2 | closed choice | grade2 | natural science | physics | States of matter | Identify solids and liquids | 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... | ||
Not supported with pagination yet | Which logical fallacy is used in the text?
Bert is not qualified to run the Environmental Club. Have you seen his sister's huge, horrifically inefficient car? The planet cries whenever she turns on the ignition. | [
"slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences",
"false dichotomy: an argument that presents only two choices when more options exist",
"guilt by association: a negative association intended to discredit someone or something"
] | 2 | closed choice | grade10 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Bert isn't qualified to run the Environmental Club because his sister drives a fuel inefficient car. However, the behavior of Bert's sister does not necessarily reflect Bert's own behavior. This illustrates a type of logical fallacy known as guilt by association. | |
What is the capital of Oregon? | [
"Portland",
"Dover",
"Salem",
"Carson City"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Salem is the capital of Oregon. | |||
Based on the timeline, which statement is true? | [
"No colonists were killed by British soldiers before the American Revolution.",
"The First Continental Congress met to place new taxes on the Thirteen Colonies.",
"Colonists protested taxes created by the British government."
] | 2 | After the French and Indian War ended in 1763, the relationship between the Thirteen Colonies and Great Britain began to change.
The timeline below shows some of the events that took place before the Revolutionary War broke out in 1775. Look at the timeline. Then answer the question below. | closed choice | grade8 | social science | us-history | The American Revolution | Causes of the American Revolution: politics and society | |||
What is the name of the colony shown? | [
"Iowa",
"Connecticut",
"Pennsylvania",
"Illinois"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Pennsylvania. | |||
Not supported with pagination yet | Which text uses the word factoid in its traditional sense? | [
"As a geneticist, Dakota enjoys watching science documentaries and sharing various factoids she's learned with her colleagues.",
"As a geneticist, Dakota dislikes many popular sci-fi movies because they often present audiences with factoids that misrepresent her field."
] | 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 first text uses factoid in its traditional sense: something made up presented as a true fact.
As a geneticist, Dakota dislikes many popular sci-fi movies because they often present audiences with factoids that misrepresent her field.
The second text uses factoid in its nontraditional sense: a trivial but true fact.... | |
What is the direction of this push? | [
"away from her hands",
"toward her hands"
] | 0 | A girl opens a window upstairs. She uses a force to push the window open with her hands. | closed choice | grade4 | natural science | physics | Force and motion | Identify directions of forces | A force is a push or a pull that one object applies to another. Every force has a direction.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The girl pushes the window open. The direction of the push is away from her hands. | |
Select the organism in the same species as the Iberian lynx. | [
"Felis silvestris",
"Felis nigripes",
"Lynx pardinus"
] | 2 | This organism is an Iberian lynx. Its scientific name is Lynx pardinus. | closed choice | grade5 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | An Iberian lynx's scientific name is Lynx pardinus.
Felis nigripes does not have the same scientific name as an Iberian lynx. So, Lynx pardinus and Felis nigripes are not in the same species.
Lynx pardinus has the same scientific name as an Iberian lynx. So, these organisms are in the same species.
Felis silvestris doe... | |
Not supported with pagination yet | Compare the motion of three motorboats. Which motorboat was moving at the lowest speed? | [
"a motorboat that moved 340kilometers north in 5hours",
"a motorboat that moved 115kilometers east in 5hours",
"a motorboat that moved 280kilometers north in 5hours"
] | 1 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each motorboat moved and the time it took to move that distance. The direction each motorboat moved does not affect its speed.
Notice that each motorboat moved for 5 hours. The motorboat that moved 115 kilometers moved the shortest distance in that time. So, that motorboat must have moved at the lo... | |
Select the organism in the same genus as the black-blotched porcupinefish. | [
"Amphiprion perideraion",
"Alopias pelagicus",
"Diodon liturosus"
] | 2 | This organism is a black-blotched porcupinefish. Its scientific name is Diodon liturosus. | 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 black-blotched porcupinefish's scientific name is Diodon liturosus. The first word of its scientific name is Diodon.
This organism and the black-blotched porcupinefish are in the same genus and the same species! Both organisms have the same scientific name, Diodon liturosus.
Amphiprion perideraion is in the genus Amp... | |
Not supported with pagination yet | The Fourth Amendment protects people against "unreasonable searches." Which is an example of the type of "unreasonable search" this amendment protects against? | [
"A teacher asks a student to answer a hard question in front of the class.",
"A parent spends several hours trying to find a lost set of car keys.",
"A police officer looks through a student's backpack for no reason."
] | 2 | closed choice | grade4 | social science | civics | Government | The Bill of Rights | The Fourth Amendment says that "unreasonable searches" are not allowed. It is not always clear what makes a search "unreasonable." But a search for no reason is definitely unreasonable! For example, a police officer cannot look through a student's backpack for no reason. The police officer has to have some sort of reas... | ||
Which of these continents does the equator intersect? | [
"South America",
"Australia",
"Europe"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The equator is the line at 0° latitude. It intersects South America. It does not intersect Europe or Australia. | ||
Not supported with pagination yet | Which is a simple sentence? | [
"Letters and packages were sent to the mail room from a chute on the fourth floor.",
"Although I would rather visit Italy, I'm excited about going to Panama this summer."
] | 0 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple, compound, or complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
aft... | The first sentence is the simple sentence. It is a single independent clause.
Letters and packages were sent to the mail room from a chute on the fourth floor. | |
Select the mammal below. | [
"brown pelican",
"fruit bat",
"barn owl",
"emu"
] | 1 | Mammals have hair or fur and feed their young milk.
Mammals are warm-blooded. Warm-blooded animals can control their body temperature.
A red howler is an example of a mammal. | closed choice | grade4 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals. | A fruit bat is a mammal. It has hair and feeds its young milk.
Fruit bats eat fruit and drink nectar from flowers. They have special teeth to help them bite through fruit skins.
An emu is a bird. It has feathers, two wings, and a beak.
Emus cannot fly, but they can run very fast. They run to avoid predators.
A barn owl... | |
Not supported with pagination yet | Which figure of speech is used in this text?
In the overmastering loneliness of that moment, his whole life seemed to him nothing but vanity.
—Robert Penn Warren, Night Rider | [
"assonance",
"antithesis"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses assonance, the repetition of a vowel sound in a series of nearby words.
The words overmastering, loneliness, moment, and whole share a vowel sound. | |
Not supported with pagination yet | What kind of sentence is this?
Lucy is completely soaked! | [
"declarative",
"exclamatory"
] | 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 about something, but it shows surprise and ends with an exclamation point. It is an exclamatory sentence. | |
Is the following statement about our solar system true or false?
Saturn's volume is more than 50% of Jupiter's volume. | [
"true",
"false"
] | 0 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | To determine if this statement is true, calculate the value of 50% of Jupiter's volume by multiplying Jupiter's volume by 0.5.
Then compare the result to the volume of Saturn. The volume of Saturn is 827,130 billion km^3, which is more than 715,640 billion km^3. So, Saturn's volume is more than 50% of Jupiter's volume. | |
Which of these states is farthest north? | [
"California",
"Pennsylvania",
"Utah",
"Virginia"
] | 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. Pennsylvania is farthest north. | ||
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 2 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in 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 ... | |
What is the capital of Hawaii? | [
"Hilo",
"Honolulu",
"Helena",
"Missoula"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Honolulu is the capital of Hawaii. | |||
What type of rock is sandstone? | [
"igneous",
"sedimentary"
] | 1 | Sandstone is a type of rock. It forms when layers of sand are pressed together to form rock. You can still see the tiny grains of sand in this piece of sandstone. | closed choice | grade3 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when a rock is chang... | Sandstone is a sedimentary rock. Like other sedimentary rocks, it forms from layers of sediment.
Sand is a type of sediment. It is found in places like deserts and beaches. Sediments like sand can build up in layers. Over time, the top layers press down on the bottom layers. Sedimentary rock forms when the bottom layer... | |
Not supported with pagination yet | What do these two changes have in common?
molding clay into the shape of a pot
breaking a stick in half | [
"Both are caused by heating.",
"Both are chemical changes.",
"Both are caused by cooling.",
"Both are only physical changes."
] | 3 | closed choice | grade3 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
Molding clay into the shape of a pot is a physical change. The clay gets a different shape. But it is made of the same type of matter.
Breaking a stick in half is a physical change. The stick gets broken into two pieces. But the pieces are still made of the same type of matter as the or... | |
Select the organism in the same genus as the common kestrel. | [
"Pelecanus rufescens",
"Ardea alba",
"Falco sparverius"
] | 2 | This organism is a common kestrel. Its scientific name is Falco tinnunculus. | 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 common kestrel's scientific name is Falco tinnunculus. The first word of its scientific name is Falco.
Falco sparverius is in the genus Falco. The first word of its scientific name is Falco. So, Falco sparverius and Falco tinnunculus are in the same genus.
Pelecanus rufescens is in the genus Pelecanus. The first word... | |
What is the capital of Illinois? | [
"Springfield",
"Provo",
"Chicago",
"Madison"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Springfield is the capital of Illinois. | |||
Which solution has a higher concentration of pink particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 0 | The diagram below is a model of two solutions. Each pink 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 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.
... | |
Which type of ant is the head of the colony? | [
"the queen",
"the solider",
"the worker"
] | 0 | Read the text about ant colonies.
Tiny ants live and work together in large groups called colonies. A single ant colony may have millions of ants living together in a nest with many tunnels and rooms. The queen ant is the head of the colony, but each ant in the colony has a job to do. The queen ant produces all of the ... | closed choice | grade3 | language science | reading-comprehension | Informational texts: level 1 | Read passages about animals | Look at the text in bold below. It tells you which type of ant is the head of the colony.
A single ant colony may have millions of ants living together in a nest with many tunnels and rooms. The queen ant is the head of the colony, but each ant in the colony has a job to do. | ||
Not supported with pagination yet | Complete the statement. Assume that Bobby's mass did not change.
The gravitational potential energy stored between Bobby and Earth () as he rode the escalator. | [
"decreased",
"stayed the same",
"increased"
] | 2 | Read the text about a person in motion.
Bobby rode an escalator from the first floor to the second floor of a shopping mall. | closed choice | grade6 | natural science | physics | Kinetic and potential energy | Identify changes in gravitational potential energy | Gravitational potential energy is stored between any two objects. So, for every object on or near Earth, there is gravitational potential energy stored between the object and Earth.
The amount of gravitational potential energy stored between an object and Earth depends on the mass of the object. The amount of gravitati... | Think about how the distance between Bobby and the center of Earth changed.
The second floor is higher than the first floor. As he rode the escalator toward the second floor, the distance between Bobby and the center of Earth increased. So, the gravitational potential energy stored between Bobby and Earth increased as ... |
Not supported with pagination yet | Which figure of speech is used in this text?
My sister always wears at least five pieces of jewelry, but I prefer to follow the guideline "Less is more." | [
"paradox",
"euphemism"
] | 0 | 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.
Less is more at first appears to be contradictory, since less and more are opposites. However, it contains some truth: by removing something or scaling back, you can sometimes achieve a more com... | |
Not supported with pagination yet | How long does it take to do ten jumping jacks? | [
"28 seconds",
"28 hours"
] | 0 | Select the better estimate. | closed choice | grade2 | 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 do ten jumping jacks is 28 seconds.
28 hours is too slow. |
Not supported with pagination yet | What is the mass of a bicycle? | [
"24 tons",
"24 pounds",
"24 ounces"
] | 1 | Select the best estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose customary units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of a bicycle is 24 pounds.
24 ounces is too light and 24 tons is too heavy. |
Which animal's skin is also adapted for survival in cold places? | [
"armadillo lizard",
"snowy owl"
] | 1 | Snow leopards live in the cold, snowy mountains of Central Asia. The 's skin is adapted to help the animal survive in cold places.
Figure: snow leopard. | closed choice | grade4 | 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 snow leopard.
The snow leopard has thick fur covering its skin. Its skin is adapted for survival in cold places. The snow leopard 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 co... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
fair - formal | [
"film",
"freckle"
] | 0 | closed choice | grade8 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since film is between the guide words fair - formal, it would be found on that page. | |
Identify the question that Evelyn's experiment can best answer. | [
"Do slugs eat more from tomato leaves or broccoli leaves?",
"Do slugs weigh more after eating tomato leaves or broccoli leaves?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Evelyn cut tomato and broccoli plant leaves into one-inch squares. In each of 12 containers, she placed six leaf squares: three tomato-leaf squares and three broccoli-leaf squares. She put one slug from her garden into ... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Is this a run-on sentence?
Helsinki, Finland, is developing a "mobility on demand" system in which individual can use their smartphones to order trips with various mass transit options, including buses, bicycles, and driverless cars. | [
"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.
Helsinki, Finland, is developing a "mobility on demand" system in which individuals can use their smartphones to order trips with various mass transit options, including buses, bicycles, and d... | |
Which solution has a higher concentration of green particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 1 | The diagram below is a model of two solutions. Each green 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 green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
Use the concentration formula to find the number of green particles per millilit... | |
What is the capital of Texas? | [
"Austin",
"Frankfort",
"Santa Fe",
"Houston"
] | 0 | closed choice | grade3 | 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 temperature of a cold glass of water? | [
"5°C",
"5°F"
] | 0 | Select the better estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Estimate temperatures | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Temperature can be written with units of degrees Fahrenheit (°F) or Celsius (°C). Use the list below to compare the two units.
212°F | Water boils | 100°C
98.6°F | Body temperature | 37°C
68°F ... | The better estimate for the temperature of a cold glass of water is 5°C.
5°F is too cold. |
Which solution has a higher concentration of blue particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A"
] | 1 | 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.
... | |
Which property do these four objects have in common? | [
"stretchy",
"fragile",
"flexible"
] | 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 fragile object will break into pieces if you drop it. The belt, the feather, and the handkerchief are not fragile.
A stretchy object gets longer when you pull on it. The feather is not stretchy.
A flexible object can be folded or bent without break... | |
Is the following statement about our solar system true or false?
There are twice as many ice planets as rocky planets. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | The table tells you that there are two ice planets and four rocky planets. So, there are half as many ice planets as rocky planets. | |
Which of the following could Trevor's test show? | [
"if the weather station would work when the temperature was 50°C",
"how well the weather station would work when it was windy"
] | 0 | 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 | grade6 | 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... | ||
What is the capital of Arizona? | [
"Sacramento",
"Santa Fe",
"Tucson",
"Phoenix"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Phoenix is the capital of Arizona. |
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.