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Is a book a solid, a liquid, or a gas? | [
"a solid",
"a liquid",
"a gas"
] | 0 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | A book is a solid. When you read a book, you bend the spine and turn the pages. But the book still has a shape of its own. | ||
Select the statement that is true about Sydney's average monthly precipitation. | [
"Less precipitation falls in February than in November.",
"More precipitation falls in June than in December.",
"Each month has about the same amount of precipitation."
] | 1 | Use the graph to answer the question below. | closed choice | grade4 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in Sydney, look at the graph.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
Choice "More precipitation falls in June than in December." is incorrect.
June has a higher average monthly precipitation than December.
... | |
Not supported with pagination yet | Select the one substance that is not a rock. | [
"Brass is made in a factory. It is a solid.",
"Dolostone is a solid. It is not a pure substance.",
"Quartzite is formed in nature. It is not made by living things."
] | 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.
Dolostone is a rock.
Brass is made in a factory. But all rocks are formed in nature.
So, brass is not a rock.
Quartzite is a rock. | |
How many years passed between the founding of Jamestown and the founding of Plymouth Colony? | [
"5 years",
"24 years",
"3 years",
"13 years"
] | 3 | The timeline below shows when several European colonies were founded, or started, in North America. Use the timeline to answer the question. | closed choice | grade5 | social science | us-history | English colonies in North America | Plymouth | Look at the timeline to find the answer.
Jamestown was founded in 1607. Plymouth (PLIH-meth) Colony was founded in 1620. To find how many years passed between those events, subtract 1607 from 1620.
Jamestown Colony was founded 13 years before Plymouth Colony. | ||
What is the name of the colony shown? | [
"Virginia",
"Florida",
"Tennessee",
"Connecticut"
] | 3 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Connecticut. | |||
Which material is this flower pot made of? | [
"cotton",
"ceramic"
] | 1 | 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 flower pot.
The flower pot is made of ceramic.
Flower pots can also be made of other materials. Some flower pots are made of plastic. Other flower pots are made from a type of baked clay called terra cotta. | ||
What is the capital of Rhode Island? | [
"Newport",
"Montpelier",
"Providence",
"Harrisburg"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | |||
Not supported with pagination yet | Read the following excerpt from a student essay. How can the writer best improve his or her ideas and development?
In the second half of the story, the man finally recognizes the power of nature. He tries to build a fire because of the extremely cold temperature. He is able to start a fire, so he thinks he will survive... | [
"by including more examples from the text",
"by removing the second main idea",
"by including more analysis"
] | 2 | 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 ideas and development by including more analysis.
For example, the writer could provide analysis for the underlined examples by indicating how the man's sense of hope underscores his arrogant attitude towards nature, how small incidents like an extinguished fire and cold fingers... | |
Not supported with pagination yet | Which organ is a tube that allows air to pass into and then out of the body? | [
"stomach",
"small intestine",
"skin",
"trachea"
] | 3 | closed choice | grade4 | natural science | biology | Animals | Human organs and their functions | |||
Not supported with pagination yet | Is the following trait inherited or acquired?
Avery has a scar on her right knee. | [
"inherited",
"acquired"
] | 1 | closed choice | grade5 | natural science | biology | Traits and heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
How do I know that Meg is the most intelligent person in our geometry class? I know because she's so smart. | [
"ad hominem: a personal attack against one's opponent",
"circular reasoning: an argument that supports a claim with the claim itself"
] | 1 | closed choice | grade7 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Meg is intelligent because she's smart. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning. | |
Select the bird below. | [
"white stork",
"sea otter"
] | 0 | Birds have feathers, two wings, and a beak. A woodpecker is an example of a bird. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A white stork is a bird. It has feathers, two wings, and a beak.
A sea otter is a mammal. It has fur and feeds its young milk. | |
Not supported with pagination yet | How long does it take to bake lasagna in the oven? | [
"37 hours",
"37 minutes"
] | 1 | 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 bake lasagna in the oven is 37 minutes.
37 hours is too slow. |
Which solution has a higher concentration of green particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each green 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 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... | |
Not supported with pagination yet | Which tense does the sentence use?
The loud thunder will wake the baby. | [
"future tense",
"present tense",
"past tense"
] | 0 | closed choice | grade4 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, wake. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | Is a cupcake a good or a service? | [
"a good",
"a service"
] | 0 | closed choice | grade2 | social science | economics | Economics | Goods and services | Everything you can buy is either a good or a service.
A good is something you can touch or hold in your hands. For example, a hammer is a good.
A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service. | To decide whether a cupcake is a good or a service, ask these questions:
Is a cupcake something you can touch? Yes.
Is a cupcake a job you might pay someone else to do? No.
So, a cupcake is a good. | |
Based on the text, which of the following things made the passenger pigeon migration a special event? | [
"The migration caused warmer weather and forest growth.",
"Only people in Florida and Texas could see the migration.",
"The migration only happened every one hundred years.",
"The sun was blocked out by huge flocks of birds."
] | 3 | Read the text about passenger pigeons.
Imagine the year 1800. The sky roars with a great clamor, like the sound of a thousand trains. The daytime sky becomes dark as sunlight is blotted out. Is it a terrible thunderstorm? No, it's actually a flock of thousands of passenger pigeons zooming overhead! Hundreds of years ag... | closed choice | grade5 | language science | reading-comprehension | Informational texts: level 1 | Read passages about animals | This detail made the passenger pigeon migration a special event:
The sun was blocked out by huge flocks of birds.
The first paragraph states that the daytime sky became dark as sunlight was blotted out by the pigeons.
These things are not stated in the text:
Only people in Florida and Texas could see the migration.
The... | ||
Not supported with pagination yet | Which press release is more formal? | [
"On Nov. 19, musicians from all over town will battle it out in the fourth annual Jam-a-thon, happening at the amphitheater.",
"On November 19, the Lanberry Amphitheater will host area musicians vying for top honors in the fourth annual Jam-a-thon."
] | 1 | closed choice | grade9 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The first press release is more formal. It uses more elevated language (area musicians, top honors). The other press release uses idioms (battle it out) and abbreviations (Nov.). | |
Which continent is highlighted? | [
"Asia",
"North America",
"Europe"
] | 0 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is Asia. | ||
Not supported with pagination yet | What do these two changes have in common?
breaking a piece of glass
tying a shoelace | [
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are chemical changes.",
"Both are caused by heating."
] | 0 | 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.
Breaking a piece of glass is a physical change. The glass gets broken into pieces. But each piece is still made of the same type of matter.
Tying a shoelace is a physical change. The shoelace gets a different shape. But it is still made of the same type of matter.
Step 2: Look at each a... | |
What evidence of an earthquake does this picture show? | [
"There are few clouds in the sky.",
"Part of a building broke apart and fell down."
] | 1 | This picture was taken after an earthquake. During an earthquake, the ground shakes. | 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 ... | ||
Which continent is highlighted? | [
"Australia",
"Africa",
"North America",
"South America"
] | 1 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Africa. | ||
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Afghanistan.
Afghanistan is a mountainous country with cold, dry winters.
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 | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Afghanistan is a mountainous country with cold, dry winters.
This passage tells you about the usual temperature pattern in Afghanistan. This passage does not describe what the weather is like on a particular day. So, this passage describes the climate. | |
What can Bill and Nora trade to each get what they want? | [
"Bill can trade his tomatoes for Nora's broccoli.",
"Nora can trade her almonds for Bill's tomatoes.",
"Nora can trade her broccoli for Bill's oranges.",
"Bill can trade his tomatoes for Nora's carrots."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Bill and Nora open their lunch boxes in the school cafeteria. Neither Bill nor Nora got everything that they wanted. The table be... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Bill wants broccoli. Nora wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want. | ||
What is the capital of Connecticut? | [
"Dover",
"Hartford",
"New Haven",
"Missoula"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Hartford is the capital of Connecticut. | |||
What is the capital of New Mexico? | [
"Albuquerque",
"Salt Lake City",
"Honolulu",
"Santa Fe"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Santa Fe is the capital of New Mexico. | |||
Select the reptile below. | [
"salt water crocodile",
"gray tree frog",
"whale shark",
"giraffe"
] | 0 | Reptiles have scaly, waterproof skin. Most reptiles live on land.
Reptiles are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
A box turtle is an example of a reptile. | 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 gray tree frog is an amphibian. It has moist skin and begins its life in water.
There are many kinds of tree frogs. Most tree frogs are very small. They can walk on thin branches.
A salt water crocodile is a reptile. It has scaly, waterproof skin.
Crocodiles hunt their prey in or near water.
A whale shark is a fish. ... | |
Which material is this binder made of? | [
"plastic",
"ceramic"
] | 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 binder.
The binder is made of two different materials. The cover is made of plastic, and the rings are made of metal. | ||
What is the name of the colony shown? | [
"Rhode Island",
"Tennessee",
"New Hampshire",
"Florida"
] | 0 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Rhode Island. | |||
Not supported with pagination yet | Which phrase has a more negative connotation? | [
"a confident person",
"a conceited person"
] | 1 | closed choice | grade6 | 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... | A conceited person has a more negative connotation. Conceited and confident both denote having a positive opinion of yourself. However, conceited suggests being overly proud and stuck-up, while confident suggests having a healthy level of self-assurance. | |
Which country is highlighted? | [
"Saint Vincent and the Grenadines",
"Trinidad and Tobago",
"Dominica",
"Grenada"
] | 1 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Trinidad and Tobago. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
Dan's room is as tidy as an overgrown garden. | [
"verbal irony",
"pun"
] | 0 | closed choice | grade9 | 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.
As tidy as an overgrown garden shows verbal irony because an overgrown garden is not tidy. | |
Not supported with pagination yet | Which is a complete sentence? | [
"The cardboard box gets wet it falls apart.",
"Leslie spilled apple juice on the carpet."
] | 1 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A run-on sentence is made up of two sentences that are joined without end punctuation or with just a comma.
I knocked on the door it opened.
It started raining, we ran inside.
To fix a run-on ... | Leslie spilled apple juice on the carpet is a complete sentence. The subject is Leslie, and the verb is spilled. | |
Which material is this clipboard made of? | [
"wood",
"concrete"
] | 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 clipboard.
The clipboard is made of two different materials. The back is made of wood, and the clip is made of metal.
Not all clipboards are made of wood. Some clipboards are made of other materials, such as plastic. | ||
Not supported with pagination yet | Based on this information, what is this fruit fly's phenotype for the body color trait? | [
"a gray body",
"Bb"
] | 0 | 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 B is for a gray body, and the allele b is for a black body.
A certain fruit fly from this group has a gray body. This fly has one allele for a gray body... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. The fruit fly's observable version of the body color trait is a gray body. So, the fly's phenotype for the body color trait is a gray body. |
Not supported with pagination yet | Select the one animal that has all of the amphibian 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!",
"Great crested newts have moist brown skin with black spots. Adult great crested newts ... | 1 | Amphibians are a group of animals with similar traits. The following traits can be used to identify amphibians:
They spend part of their lives in water and part on land.
They have moist skin.
They make eggs with no 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.
Amphibians have the following traits:
They spend part of their lives in water and part on land.
They have moist skin.
They make eggs with no shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to th... |
Not supported with pagination yet | Which of the following statements is true? | [
"The president of the United States is in charge of carrying out the laws.",
"The president of the United States makes all laws."
] | 0 | The Executive Branch of government is described in Article II of the United States Constitution. Read Section 1 of Article II. Then answer the question.
The executive power shall be vested in a president of the United States of America. He shall hold his office during the term of four years, and, together with the vice... | closed choice | grade6 | social science | civics | Government | The Executive Branch | ||
Which property do these four objects have in common? | [
"transparent",
"stretchy",
"sweet"
] | 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.
Sugar has a sweet taste. The balloon is not sweet.
A stretchy object gets longer when you pull on it. All four objects are stretchy.
You can see clearly through a transparent object. The rubber toys, the balloon, and the spring are not transparent.
T... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
riddle - ruby | [
"royal",
"rack"
] | 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 royal is between the guide words riddle - ruby, it would be found on that page. | |
Not supported with pagination yet | Which type of sentence is this?
If we can't find an inexpensive hotel for the Fourth of July weekend, we can always stay with my parents. | [
"compound",
"simple",
"compound-complex",
"complex"
] | 3 | closed choice | grade10 | 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 complex. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction if.
If we can't find an inexpensive hotel for the Fourth of July weekend, we can always stay with my parents. | |
Not supported with pagination yet | Complete the sentence.
Baking a loaf of bread is a (). | [
"chemical change",
"physical change"
] | 0 | closed choice | grade2 | natural science | chemistry | Physical and chemical change | Identify physical and chemical changes | Chemical changes and physical changes are two ways matter can change.
In a chemical change, the type of matter changes.
Burning a piece of paper is a chemical change. The paper changes into ash and smoke.
In a physical change, the type of matter stays the same.
Cutting a piece of paper is a physical change. The cut pie... | Baking a loaf of bread is a chemical change. Bread is made from dough. Baking turns the dough into bread. The bread is a different type of matter than the dough. | |
Not supported with pagination yet | Which sentence states a fact? | [
"Harry Houdini, born Erich Weisz, used \"Houdini\" as his stage name to pay homage to famous French magician Robert Houdin.",
"Harry Houdini was a mediocre magician, but many people considered him to be a skilled escape artist."
] | 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 Harry Houdini chose his stage name in a biography or Houdini's own writing.
Harry Houdini, born Erich Weisz, used "Houdini" as his stage name to pay homage to famous French magician Robert Houdin.
The second sentence states an opinion. Mediocre indi... | |
Not supported with pagination yet | What do these two changes have in common?
melting wax
dust settling out of the air | [
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by cooling."
] | 1 | 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.
Melting wax is a change of state. So, it is a physical change. The wax changes from solid to liquid. But it is still made of the same type of matter.
Dust settling out of the air is a physical change. As the dust settles, or falls, it might land on furniture or the ground. This separate... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
banner - brain | [
"bulge",
"blew"
] | 1 | 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 blew is between the guide words banner - brain, it would be found on that page. | |
Identify the question that Sam's experiment can best answer. | [
"Does apple juice expand more or less than water when it freezes?",
"Does water freeze more quickly than apple juice?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Sam poured 30 milliliters of water into each of six measuring cups. He poured the same volume of apple juice into another six measuring cups. He kept the measuring cups in a freezer for 48 hours. Sam then observed the f... | 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 text uses the word literally in its traditional sense? | [
"The curry that the chef prepared was so spicy that Perry literally had to drink three glasses of milk to ease the pain.",
"The curry that the chef prepared was so spicy that Perry's mouth was literally on fire by the time he finished his meal."
] | 0 | closed choice | grade10 | 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 literally in its traditional sense: in a factual, non-exaggerated way.
The curry that the chef prepared was so spicy that Perry literally had to drink three glasses of milk to ease the pain.
The first text uses literally in its nontraditional sense: nearly or in effect (often exaggerated). Perry's ... | |
Based on the arrows, which of the following living things is a producer? | [
"phytoplankton",
"zooplankton"
] | 0 | Below is a food web from an ocean ecosystem. The ecosystem is in Monterey Bay, off the coast of California.
A food web is a model that shows how the matter eaten by living things moves through an ecosystem. The arrows show how matter moves through the food web. | closed choice | grade3 | natural science | biology | Ecosystems | Interpret food webs | A food web is a model.
Models can make things in nature easier to understand. Models can be simpler than the things they represent. A food web is a model that shows where living things in an ecosystem get their food. If a food web showed every living thing in an ecosystem, the food web would be hard to understand. So, ... | Producers make their own food. They do not eat other living things. So, there are no arrows in a food web that point from other living things to producers.
The phytoplankton does not have any arrows pointing to it. So, the phytoplankton is a producer.
The zooplankton has an arrow pointing to it from the phytoplankton. ... | |
Not supported with pagination yet | Which is a complex sentence? | [
"Mr. Durham's afternoon lecture was about art and culture in Germany before World War II.",
"Before you explain your position, please listen carefully to Cody's idea."
] | 1 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple, compound, or complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
aft... | The first sentence is the complex sentence. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction before.
Before you explain your position, please listen carefully to Cody's idea. | |
Which animal's legs are also adapted for wading? | [
"hammerkop",
"flying fox"
] | 0 | 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 | grade3 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the 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 hammerkop has long, thin legs. Its legs are adapted for wading.
The f... | |
What can Gordon and Roxanne trade to each get what they want? | [
"Gordon can trade his tomatoes for Roxanne's sandwich.",
"Gordon can trade his tomatoes for Roxanne's broccoli.",
"Roxanne can trade her almonds for Gordon's tomatoes.",
"Roxanne can trade her broccoli for Gordon's oranges."
] | 1 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Gordon and Roxanne open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Gordon wante... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Gordon wanted broccoli in his lunch and Roxanne was hoping for tomatoes. Look at the labeled part of the images.
Gordon has tomatoes. Roxanne has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | ||
Is a hair clip a solid, a liquid, or a gas? | [
"a solid",
"a gas",
"a liquid"
] | 0 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a 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 i... | A hair clip is a solid. A solid has a size and shape of its own.
You can use a hair clip to keep your hair out of your face because the hair clip keeps its shape. | ||
Which continent is highlighted? | [
"Asia",
"Australia",
"Africa",
"North America"
] | 0 | closed choice | grade4 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Asia. | ||
Not supported with pagination yet | Last year, 50,000 people lived in the city of Wildgrove. But since then, 8,000 people have moved away. What probably happened to the overall supply of houses for sale in Wildgrove? | [
"The supply probably went up.",
"The supply probably went down."
] | 0 | closed choice | grade4 | social science | economics | Supply and demand | Understand overall supply and demand | Overall supply is the total amount of a good or service that producers make and sell. There are several things that can make overall supply go up or down. The table below shows how changes to these things might affect overall supply.
| Resources | Number of producers or suppliers | Expected change in demand
Supply goe... | The population of Wildgrove fell by 8,000 people. Many of the people who have left are probably trying to sell their houses. Since more people are trying to sell their houses, the number of suppliers of houses for sale in Wildgrove has gone up. So, the supply of houses for sale probably went up, too. | |
During this time, thermal energy was transferred from () to (). | [
"each vial . . . the surroundings",
"the surroundings . . . each vial"
] | 1 | Scientists in a laboratory were working with insulin, a protein often used to treat diabetes. They left two identical vials of insulin in different places. This table shows how the temperature of each vial changed over 15minutes. | closed choice | grade7 | natural science | physics | Thermal energy | Compare thermal energy transfers | A change in an object's temperature indicates a change in the object's thermal energy:
An increase in temperature shows that the object's thermal energy increased. So, thermal energy was transferred into the object from its surroundings.
A decrease in temperature shows that the object's thermal energy decreased. So, th... | The temperature of each vial increased, which means that the thermal energy of each vial increased. So, thermal energy was transferred from the surroundings to each vial. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Walter can fly an airplane. | [
"inherited",
"acquired"
] | 1 | Hint: Pilots have to learn how to fly an airplane. | 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 fly an airplane. Instead, some people learn how to fly airplanes. So, flying an airplane is an acquired trait. |
Not supported with pagination yet | Does this passage describe the weather or the climate?
In Miami, Florida, afternoon thunderstorms are common in the late summer months. | [
"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.
In Miami, Florida, afternoon thunderstorms are common in the late summer months.
This passage tells you about the usual precipitation in Miami. It does not describe what the weather is like on a particular day. So, this passage describes the climate. |
Not supported with pagination yet | What is the mass of a school bus? | [
"13 pounds",
"13 ounces",
"13 tons"
] | 2 | 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 school bus is 13 tons.
13 ounces and 13 pounds are both too light. |
Which country is highlighted? | [
"Cuba",
"Saint Vincent and the Grenadines",
"Grenada",
"Trinidad and Tobago"
] | 3 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Trinidad and Tobago. | |||
Not supported with pagination yet | How long is a spider's leg? | [
"16 millimeters",
"16 kilometers",
"16 meters",
"16 centimeters"
] | 0 | 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 spider's leg is 16 millimeters.
16 centimeters, 16 meters, and 16 kilometers are all too long. |
Not supported with pagination yet | Which organ pumps blood through the body? | [
"stomach",
"lungs",
"heart"
] | 2 | closed choice | grade3 | natural science | biology | Animals | Human organs and their functions | |||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
scramble - shellac | [
"second",
"sad"
] | 0 | closed choice | grade6 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since second is between the guide words scramble - shellac, it would be found on that page. | |
Not supported with pagination yet | Using only these supplies, which question can Carter investigate with an experiment? | [
"Does white or whole wheat sandwich bread grow visible mold in fewer days?",
"Does white sandwich bread grow visible mold in fewer days if the bread is stored in a paper bag or in a plastic bag?",
"Does white sandwich bread grow visible mold in fewer days if the bread is stored inside or outside the refrigerato... | 2 | Carter starts to make a sandwich, but he sees mold on the bread! He wonders what factors affect how mold grows on bread. So, he decides to design an experiment. He has the following supplies available:
two loaves of white sandwich bread
a small plastic bag
a large plastic bag
a refrigerator | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Not supported with pagination yet | Would you find the word woke on a dictionary page with the following guide words?
wear - while | [
"no",
"yes"
] | 0 | 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 woke is not between the guide words wear - while, it would not be found on that page. | |
Which animal's skin is also adapted for survival in cold places? | [
"hairy armadillo",
"caribou"
] | 1 | Arctic wolves live in the Canadian Arctic and Greenland. The 's skin is adapted to help the animal survive in cold places.
Figure: Arctic wolf. | 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 wolf.
The Arctic wolf has thick fur covering its skin. Its skin is adapted for survival in cold places. The Arctic wolf uses its fur to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
During the winter, the caribou has thick fur cov... | |
Not supported with pagination yet | The movers lift the boxes at the same speed. Which box is lifted with a larger force? | [
"a box holding 35 pounds",
"a box holding 50 pounds"
] | 1 | Two movers are putting heavy boxes into their truck. The boxes are the same shape and size. Each mover lifts one box up into the truck at a time. | closed choice | grade2 | natural science | physics | Force and motion | How do mass and force affect motion? | A force is a push or a pull.
A force can make an object start moving or stop an object that is moving. A force can also make an object speed up, slow down, or change direction.
Forces can be different sizes.
Think about trying to move a heavy object and a light object. Imagine you want to move them at the same speed. Y... | Look for the box that is heavier.
A box holding 50 pounds is heavier than a box holding 35 pounds. So, the box holding 50 pounds needs a larger force to start moving upward at the same speed as the other box. |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"neither; the samples have the same temperature",
"sample A"
] | 2 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade7 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sample A mus... | |
Which animal is also adapted to use its neck to appear large and scary to a predator? | [
"sand lizard",
"frillneck lizard"
] | 1 | s are snakes. Their predators include mongooses and secretary birds. The cobra uses its neck to appear large and scary to a predator.
Figure: Mozambique spitting cobra. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's neck is one example of an adaptation. Animals' necks can be adapted in different ways. For example, a large frilled neck might help an animal appear dangerous ... | Look at the picture of the Mozambique spitting cobra.
When frightened, the Mozambique spitting cobra can spread out its hood to appear larger and more dangerous. If a predator is nearby, the hood can help scare it away.
Now look at each animal. Figure out which animal has a similar adaptation.
The frillneck lizard has ... | |
Not supported with pagination yet | Is a bed a good or a service? | [
"a good",
"a service"
] | 0 | closed choice | grade2 | social science | economics | Economics | Goods and services | Everything you can buy is either a good or a service.
A good is something you can touch or hold in your hands. For example, a hammer is a good.
A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service. | To decide whether a bed is a good or a service, ask these questions:
Is a bed something you can touch? Yes.
Is a bed a job you might pay someone else to do? No.
So, a bed is a good. | |
Not supported with pagination yet | Which text uses the word peruse in its traditional sense? | [
"Elijah perused a clothing catalog as he waited for his appointment, flipping through the pages distractedly.",
"Elijah perused a catalog from his wife's favorite clothing store, searching for the perfect birthday gift."
] | 1 | closed choice | grade12 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The first text uses peruse in its traditional sense: to examine in detail.
Elijah perused a catalog from his wife's favorite clothing store, searching for the perfect birthday gift.
The second text uses peruse in its nontraditional sense: to look through in a casual manner.
Elijah perused a clothing catalog as he waite... | |
Not supported with pagination yet | Which type of sentence is this?
The vibrant trumpet-shaped blooms of the trumpet vine make it ideal for attracting hummingbirds. | [
"simple",
"compound",
"complex",
"compound-complex"
] | 0 | closed choice | grade10 | 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 simple. It is a single independent clause.
The vibrant trumpet-shaped blooms of the trumpet vine make it ideal for attracting hummingbirds. | |
Not supported with pagination yet | Would you find the word ago on a dictionary page with the following guide words?
accent - ashamed | [
"no",
"yes"
] | 1 | yes or no | grade3 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since ago is between the guide words accent - ashamed, it would be found on that page. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
lead - lodge | [
"liver",
"lava"
] | 0 | closed choice | grade5 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since liver is between the guide words lead - lodge, it would be found on that page. | |
Not supported with pagination yet | Which tense does the sentence use?
The children will exchange gifts at the event. | [
"past tense",
"future tense",
"present tense"
] | 1 | closed choice | grade4 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, exchange. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | Which is a simple sentence? | [
"Katie finished her book, but she got two more from the library.",
"The jewels on your necklace sparkle in this light."
] | 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 simple sentence. It has one subject and predicate.
The jewels on your necklace sparkle in this light. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Mrs. Randolph decided not to argue with the name her daughter had chosen for their new kitten, figuring it was a matter of a rose by any other name. | [
"Shakespeare",
"a poem"
] | 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 a rose by any other name is Shakespeare.
In Shakespeare's Romeo and Juliet, the two central characters are denied their love because they belong to warring families, the Montagues and Capulets. Juliet wonders how a mere family name can make someone an enemy, observing that a rose would smell ... | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The car engine () as Mr. Cooper tried to start it in the freezing cold. | [
"coughed",
"failed"
] | 0 | closed choice | grade8 | 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 coughed. It describes the engine as if it were a person who is sick. | |
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 | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether ammonia is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chemical el... | |
Not supported with pagination yet | Which object has the least thermal energy? | [
"a 9-kilogram gold bar at a temperature of 91°C",
"a 9-kilogram gold bar at a temperature of 77°C",
"a 9-kilogram gold bar at a temperature of 89°C"
] | 1 | The objects are identical except for their temperatures. | closed choice | grade4 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both ... | All three gold bars have the same mass but different temperatures. Since the 77°C gold bar is the coldest, it has the least thermal energy. |
Is the following statement about our solar system true or false?
The largest planet is made mainly of ice. | [
"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 decide which planet is the largest, look at the volumes shown in the table and compare the exponents. Jupiter's volume has an exponent of 15, which is the largest out of all the planets.
Jupiter is made mainly of gas. So, the largest planet is made mainly of gas. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"your friend,\nDanielle",
"Your friend,\nDanielle"
] | 1 | closed choice | grade4 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Based on the timeline, which statement is true? | [
"The First Continental Congress met to place new taxes on the Thirteen Colonies.",
"No colonists were killed by British soldiers before the American Revolution.",
"The French and Indian War ended before the Stamp Act was passed."
] | 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 | |||
Not supported with pagination yet | Select the solid. | [
"water in a glass",
"sand",
"rain puddle",
"air inside a bubble"
] | 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... | Sand is a solid. A solid has a size and shape of its own. Sand is made of many small pieces of rocks and minerals, called grains. Imagine putting many grains of sand into a bucket. The sand takes the shape of the bucket, as a liquid would. But be careful! Sand is not a liquid. Each grain of sand still has a size and sh... | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Deb is good at knitting hats. | [
"acquired",
"inherited"
] | 0 | Hint: People who can knit had to learn how to do it. | 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 knit. Instead, many people learn how to knit. Knitting well takes practice. So, knitting well is an acquired trait. |
Select the organism in the same genus as the barn owl. | [
"Sciurus vulgaris",
"Tyto alba",
"Ardea alba"
] | 1 | This organism is a barn owl. Its scientific name is Tyto alba. | closed choice | grade6 | 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 barn owl's scientific name is Tyto alba. The first word of its scientific name is Tyto.
This organism and the barn owl are in the same genus and the same species! Both organisms have the same scientific name, Tyto alba.
Sciurus vulgaris is in the genus Sciurus. The first word of its scientific name is Sciurus. So, Sc... | |
Not supported with pagination yet | Which is smoother? | [
"bark",
"soap bar"
] | 1 | closed choice | grade3 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy.
For examp... | Smooth is a property. A smooth material is not rough or bumpy.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the soap bar is smoother. If you touch a bar of soap, it will not feel rough or bumpy. | |
Not supported with pagination yet | What do these two changes have in common?
burning a candle
mixing glue and laundry powder to create putty | [
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by cooling."
] | 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.
Burning a candle is a chemical change. Both the wick and the melted wax burn. They react with oxygen in the air and turn into soot, carbon dioxide, and water.
Mixing glue and laundry powder to create putty is a chemical change. The putty is a different type of matter that was not there ... | |
Not supported with pagination yet | Which is harder? | [
"glass marbles",
"paper"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. | Hard is a property. A hard material keeps its shape when you press on it with your finger.
Look at each picture, one at a time. Imagine pushing on the material shown in each picture.
Of the choices, the glass marbles are harder. If you squeeze glass marbles, they will not change shape. | |
Complete the statement.
Water is (). | [
"an elementary substance",
"a compound"
] | 1 | The model below represents a molecule of water. Over 98% of the molecules in your body are water molecules. | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether water is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chemical elem... | |
Not supported with pagination yet | Which phrase has a more negative connotation? | [
"waste money",
"spend money"
] | 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... | Waste money has a more negative connotation. If you waste money, you spend it on something useless. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Ed says that he would not be the person he is today were it not for his childhood, which he describes as Dickensian. | [
"a poem",
"literature"
] | 1 | closed choice | grade11 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Gree... | The source of the allusion Dickensian is literature.
The works of British author Charles Dickens often featured characters struggling to survive in settings such as debtors' prisons and orphanages.
The allusion Dickensian means harsh or poverty-stricken. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Love,\nLuna",
"love,\nLuna"
] | 0 | closed choice | grade4 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Assume all other forces on Ben are balanced. Which statement describes the forces on Ben? | [
"The forces are balanced, so there is no net force on Ben.",
"The forces are unbalanced, so there is a net force on Ben."
] | 0 | Ben is standing on a diving board at the pool. Earth's gravity is pulling down on Ben with a force of 400N. The diving board is pushing up on Ben with a force of 400N. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Balanced and unbalanced forces | A force is a push or a pull that acts on an object. Every force has a direction and a magnitude, or strength. If two forces act on an object in opposite directions, the forces are called opposing forces.
When opposing forces have the same magnitude, they are balanced. If all the forces on an object are balanced, there ... | To determine if there is a net force on Ben, look at the forces:
Earth's gravity is pulling Ben down with a force of 400 N.
The diving board is pushing Ben up with a force of 400 N.
The forces are in opposite directions, and the forces have the same magnitude: 400 N. This means that the forces are balanced, so there is... |
Not supported with pagination yet | Is the following trait inherited or acquired?
Jamie is good at cooking. | [
"acquired",
"inherited"
] | 0 | Hint: Cooking 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 cook. Instead, many people learn how to cook. So, cooking is an acquired trait. |
Not supported with pagination yet | Compare the motion of two mountain bikers. Which mountain biker was moving at a lower speed? | [
"a mountain biker who moved 145miles in 10hours",
"a mountain biker who moved 200miles in 10hours"
] | 0 | closed choice | grade2 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects movi... | Look at the distance each mountain biker moved and the time it took to move that distance.
One mountain biker moved 145 miles in 10 hours.
The other mountain biker moved 200 miles in 10 hours.
Notice that each mountain biker spent the same amount of time moving. The mountain biker who moved 145 miles moved a shorter di... | |
Which type of force from the traveler rolls the suitcase along? | [
"pull",
"push"
] | 0 | A traveler rolls his suitcase along behind him. He applies a force to the suitcase as he walks. | closed choice | grade3 | natural science | physics | Force and motion | Identify pushes and pulls | A force is a push or a pull that one object applies to a second object.
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 traveler applies a force to the suitcase. This force rolls the suitcase along. The direction of this force is toward the traveler. This force is a pull. | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample A",
"sample B",
"neither; the samples have the same temperature"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | The particles in both samples have the same average speed, but each particle in sample B has more mass than each particle 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 kinetic energy, sample B mus... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
person - plug | [
"pity",
"preserve"
] | 0 | closed choice | grade7 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since pity is between the guide words person - plug, it would be found on that page. | |
Not supported with pagination yet | Based on this information, what is Bambi's phenotype for the wool color trait? | [
"white wool",
"black wool"
] | 0 | In a group of sheep, some individuals have white wool and others have black wool. In this group, the gene for the wool color trait has two alleles. The allele for black wool (l) is recessive to the allele for white wool (L).
Bambi is a sheep from this group. Bambi has the homozygous genotype LL for the wool color gene. | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Bambi's genotype for the wool color gene is LL. Bambi's genotype of LL has only L allelles. The L allele is for white wool. So, Bambi's phenotype for the wool color trait must be white wool.
To check this answer, consider whether Bambi's alleles are dominant or recessive. The allele for black wool (l) is recessive to t... |
Not supported with pagination yet | What do these two changes have in common?
tearing a piece of paper
butter melting on a hot day | [
"Both are caused by heating.",
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are chemical changes."
] | 2 | 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.
Tearing a piece of paper is a physical change. The paper tears into pieces. But each piece is still made of paper.
Butter melting on a hot day is a change of state. So, it is a physical change. The butter changes from solid to liquid, but it is still made of the same type of matter.
Ste... | |
Not supported with pagination yet | How long is a garden snail? | [
"47 millimeters",
"47 kilometers",
"47 centimeters",
"47 meters"
] | 0 | Select the best estimate. | closed choice | grade6 | 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 garden snail is 47 millimeters.
47 centimeters, 47 meters, and 47 kilometers are all too long. |
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.