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Complete the statement.
Rhenium is (). | [
"an elementary substance",
"a compound"
] | 0 | The model below represents rhenium. Rhenium is a rare and expensive metal used to make jet engines. | closed choice | grade8 | 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 rhenium is an elementary substance or a compound.
Step 1: Interpret the model.
In the space-filling model shown above, all of the balls are the same color:
. The legend shows that dark blue represents the chemical element with the atomic symbol Re. So, the model shows you that rhenium... | |
Not supported with pagination yet | Compare the motion of two sailboats. Which sailboat was moving at a lower speed? | [
"a sailboat that moved 65kilometers in 5hours",
"a sailboat that moved 90kilometers in 5hours"
] | 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 kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects... | Look at the distance each sailboat moved and the time it took to move that distance.
One sailboat moved 65 kilometers in 5 hours.
The other sailboat moved 90 kilometers in 5 hours.
Notice that each sailboat spent the same amount of time moving. The sailboat that moved 65 kilometers moved a shorter distance in that time... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Alana's shoes are superior, because they're made from one hundred percent snakeskin, not synthetic materials. | [
"red herring: the use of a completely unrelated topic or idea",
"appeal to nature: the assumption that natural things are always good"
] | 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 Alana's shoes are the best, because they're made with snakeskin rather than synthetic materials. However, even though the shoes are made from snakes, that doesn't necessarily mean that they are better. This illustrates a type of logical fallacy known as an appeal to nature. | |
Not supported with pagination yet | Which sentence uses a simile? | [
"Mr. Burnett's legs were as long as sunflower stalks.",
"Mr. Burnett's long legs were sunflower stalks."
] | 0 | closed choice | grade4 | language science | figurative-language | Literary devices | Identify similes and metaphors | Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A che... | This sentence uses a simile:
Mr. Burnett's legs were as long as sunflower stalks.
The words legs and sunflower stalks are compared using the word as.
This sentence uses a metaphor:
Mr. Burnett's long legs were sunflower stalks.
The words legs and sunflower stalks are compared without the word like or as. | |
Identify the question that Abdul's experiment can best answer. | [
"Do steel nails rust in fewer days when submerged in a large volume of liquid compared to a small volume?",
"Do steel nails take fewer days to rust in water compared to vinegar?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Abdul put one two-inch steel nail into each of six test tubes. He added water to three of the test tubes and vinegar to the other three. In each test tube, he completely covered the nail with the same volume of liquid. ... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Based on the timeline, which statement is true? | [
"Americans boycotted British goods before the Revolutionary War began.",
"The Boston Massacre was the first battle of the Revolutionary War."
] | 0 | Between 1775 and 1783, Americans fought the British in the Revolutionary War. Look at the timeline of events in the years before the war. Then answer the question. | closed choice | grade8 | social science | us-history | The American Revolution | The Revolutionary War: preparing for war | |||
Complete the text to describe the diagram.
Solute particles moved in both directions across the permeable membrane. But more solute particles moved across the membrane (). When there was an equal concentration on both sides, the particles reached equilibrium. | [
"to the right than to the left",
"to the left than to the right"
] | 0 | The diagram below shows a solution with one solute. Each solute particle is represented by a green ball. The solution fills a closed container that is divided in half by a membrane. The membrane, represented by a dotted line, is permeable to the solute particles.
The diagram shows how the solution can change over time ... | closed choice | grade6 | natural science | chemistry | Solutions | Diffusion across membranes | In a solution, solute particles move and spread throughout the solvent. The diagram below shows how a solution can change over time. Solute particles move from the area where they are at a higher concentration to the area where they are at a lower concentration. This movement happens through the process of diffusion.
A... | Look at the diagram again. It shows you how the solution changed during the process of diffusion.
Before the solute particles reached equilibrium, there were 6 solute particles on the left side of the membrane and 2 solute particles on the right side of the membrane.
When the solute particles reached equilibrium, there... | |
Not supported with pagination yet | Which sentence states a fact? | [
"In 2015, more than 13% of the people in the United States lived in poverty.",
"Growing poverty is a problem in the United States."
] | 0 | closed choice | grade8 | social science | civics | Social studies skills | Identify facts and opinions | A fact is something that can be proved true by research or observation.
George Washington became president of the United States in 1789.
This statement is a fact. It can be proved by researching what year George Washington was inaugurated president.
An opinion is something that a person believes, thinks, or feels. An o... | The second sentence states a fact.
In 2015, more than 13% of the people in the United States lived in poverty.
It can be proved by researching the number of people who live in poverty.
The first sentence states an opinion.
Growing poverty is a problem in the United States.
Problem shows what a person believes, thinks, ... | |
Not supported with pagination yet | What do these two changes have in common?
mixing sand and gravel
using a large magnet to remove pieces of iron from a junkyard | [
"Both are caused by heating.",
"Both are caused by cooling.",
"Both are chemical changes.",
"Both are only physical changes."
] | 3 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Mixing sand and gravel is a physical change. Together, the sand and gravel make a mixture. But making this mixture does not form a different type of matter.
Using a large magnet to remove pieces of iron from a junkyard is a physical change. Both the iron and the magnet are still made of... | |
Not supported with pagination yet | Weather forecasters expect a hot, dry summer in the parts of Africa where bananas grow. Bananas do not grow well in hot and dry weather. What will probably happen to the overall supply of bananas? | [
"The supply will probably go up.",
"The supply will probably go down."
] | 1 | closed choice | grade7 | 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... | Hot and dry weather makes it more difficult to grow bananas. Fewer bananas will survive the growing season, and there will be fewer bananas to sell. So, the supply of bananas will probably go down because the bananas, which are resources, are harder to get. | |
Which is this organism's scientific name? | [
"red-eyed tree frog",
"Agalychnis callidryas"
] | 1 | This organism is Agalychnis callidryas. It is also called a red-eyed tree frog. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Agalychnis callidryas is written in italics. The first word is capitalized, and the second word is not.
So, Agalychnis callidryas is the scientific name. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Kendrick's leaving his job? That's old news. He's been planning that for months. | [
"anaphora",
"oxymoron"
] | 1 | 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 an oxymoron, a joining of two seemingly contradictory terms.
Old news is a contradiction, because news is recent information. | |
Not supported with pagination yet | What information supports the conclusion that Scott acquired this trait? | [
"Scott's friend taught him how to fly a kite.",
"Scott's neighbor taught him how to repair a kite.",
"Scott likes to fly a kite with his younger brother."
] | 0 | Read the description of a trait.
Scott knows how to fly a kite. | closed choice | grade7 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Not supported with pagination yet | Is a pair of scissors a good or a service? | [
"a service",
"a good"
] | 1 | closed choice | grade3 | social science | economics | Basic economic principles | Goods and services | Everything you can buy is either a good or a service.
A good is something you can touch or hold in your hands. For example, a hammer is a good.
A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service. | To decide whether a pair of scissors is a good or a service, ask these questions:
Is a pair of scissors something you can touch? Yes.
Is a pair of scissors a job you might pay someone else to do? No.
So, a pair of scissors is a good. | |
Not supported with pagination yet | Read the following excerpt from a student essay. How can the writer best improve his or her word choice?
If I could invent something, I would create a really nice bicycle. My bike would have a good seat and great tires so that I could ride it anywhere. It would also have a bell and special pockets for carrying things. ... | [
"by reducing repetitive language",
"by using more specific language"
] | 1 | closed choice | grade10 | 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 word choice by using more specific language.
For example, the writer could replace the underlined text more descriptive language, such as the perfect bicycle; comfortable; durable; my cell phone, a water bottle, and a snack; foldable, umbrella-like top; unusual color like turquo... | |
What type of rock is obsidian? | [
"sedimentary",
"igneous",
"metamorphic"
] | 1 | This is a piece of obsidian. Do you see the smooth, glassy surfaces of this rock?
Obsidian forms when melted rock cools very quickly. The rock is usually black, brown, or tan in color. Some pieces of obsidian contain swirls of two or more colors. | closed choice | grade7 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together, or compacted, to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when ... | Obsidian is an igneous rock. Like other igneous rocks, it forms when melted rock cools and hardens.
Melted rock at the earth's surface is called lava. Obsidian forms when lava cools very quickly. The cooling is so quick that the minerals do not have time to form grains. This is why obsidian looks glassy. | |
Not supported with pagination yet | The shopper lifts each bag at the same speed. Which bag is lifted with a larger force? | [
"a bag holding 6 pounds of food",
"a bag holding 3 pounds of food"
] | 0 | A shopper is buying food at the store. He fills two shopping bags. The shopping bags are the same size and shape. | 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 shopping bag that is heavier.
A shopping bag holding 6 pounds of food is heavier than a shopping bag holding 3 pounds of food. So, the bag holding 6 pounds needs a larger force to start moving upward at the same speed as the other bag. |
What can Gina and Jeremiah trade to each get what they want? | [
"Gina can trade her tomatoes for Jeremiah's broccoli.",
"Gina can trade her tomatoes for Jeremiah's carrots.",
"Jeremiah can trade his almonds for Gina's tomatoes.",
"Jeremiah can trade his broccoli for Gina's oranges."
] | 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.
Gina and Jeremiah open their lunch boxes in the school cafeteria. Neither Gina nor Jeremiah got everything that they wanted. The ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Gina wants broccoli. Jeremiah 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. | ||
Identify the question that Judith's experiment can best answer. | [
"Do the temperatures inside boxes depend on the sizes of the boxes?",
"Do the insides of white boxes get hotter than the insides of black boxes when the boxes are left in the sun?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Judith glued lids onto 16 cardboard shoe boxes of equal size. She painted eight of the boxes black and eight of the boxes white. Judith made a small hole in the side of each box and then stuck a thermometer partially in... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Would you find the word ninety on a dictionary page with the following guide words?
nap - neither | [
"no",
"yes"
] | 0 | yes or no | grade7 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since ninety is not between the guide words nap - neither, it would not be found on that page. | |
What is the capital of Utah? | [
"Salt Lake City",
"Topeka",
"Provo",
"Denver"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Salt Lake City is the capital of Utah. | |||
Not supported with pagination yet | Which statement describes the clown's motion? | [
"The clown has a constant velocity.",
"The clown is accelerating."
] | 1 | A clown on a unicycle is riding in a circle at a constant speed. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | Identify whether objects are accelerating | An object's velocity describes its speed and its direction.
An object has a constant velocity when neither its speed nor its direction is changing. So, an object has a constant velocity when the object is:
moving in a straight line at a constant speed, or
remaining motionless.
If an object does not have a constant velo... | The clown is changing direction. So, the clown is accelerating. |
Identify the question that Carrie's experiment can best answer. | [
"Do radishes grown under bright light get bigger than radishes grown under dim light?",
"Do radish plants grown under bright light have more leaves than radish plants grown under dim light?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Carrie planted 20 radish plants in a greenhouse, putting each plant in its own pot. She placed ten of the pots under bright light and the other ten pots under dim light. Carrie watered all the plants twice a day. After ... | 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... | ||
Which of these colonies was Middle Colonies? | [
"New York",
"Georgia",
"North Carolina"
] | 0 | In the following questions, you will learn about the origins of the Middle Colonies. The Middle Colonies made up the middle part of the Thirteen Colonies, which were ruled by England in the 1600s and 1700s. The map below shows the Thirteen Colonies in 1750. Look at the map. Then answer the question below. | closed choice | grade7 | social science | us-history | Colonial America | Middle Colonies: founding and government | Look at the legend on the map.
The rest of the Thirteen Colonies were part of New England or the Southern Colonies. | ||
Not supported with pagination yet | Which organ produces all the blood for the body? | [
"skeleton",
"heart",
"stomach",
"skin"
] | 0 | closed choice | grade5 | natural science | biology | Animals | Human organs and their functions | |||
Not supported with pagination yet | What information supports the conclusion that Warren inherited this trait? | [
"Warren and his biological father have short hair.",
"Warren and his siblings all have naturally straight hair.",
"Warren's biological mother often wears her naturally brown hair in a bun."
] | 2 | Read the description of a trait.
Warren has naturally brown hair. | closed choice | grade8 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Not supported with pagination yet | Which tense does the sentence use?
They will track the bear through the woods. | [
"future tense",
"present tense",
"past tense"
] | 0 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, track. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | Which text uses the word travesty in its traditional sense? | [
"Eliana was upset about the local news network's coverage of the presidential debates, calling it a travesty of reporting that undermined important issues.",
"Eliana thought it a travesty that her local news network provided only limited coverage of the presidential debates."
] | 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 first text uses travesty in its traditional sense: a ridiculous imitation; a parody.
Eliana was upset about the local news network's coverage of the presidential debates, calling it a travesty of reporting that undermined important issues.
The second text uses travesty in its nontraditional sense: a disappointment ... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
dive - dune | [
"desk",
"drape"
] | 1 | 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 drape is between the guide words dive - dune, it would be found on that page. | |
What is the name of the colony shown? | [
"Georgia",
"New York",
"Maryland",
"Iowa"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Georgia. | |||
Not supported with pagination yet | Which text uses the word factoid in its traditional sense? | [
"As a geneticist, Belle enjoys watching science documentaries and sharing various factoids she's learned with her colleagues.",
"As a geneticist, Belle 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, Belle 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.
... | |
Which of the following was a dependent variable in this experiment? | [
"the type of flour used",
"the volume of the cupcakes"
] | 1 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Harold was baking cupcakes for his stepfather's birthday. Harold wondered whether the volume of a cupcake would be affected by the type of flour in the batter.
Harold bought three types of flour and made three... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify independent and dependent variables | Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato... | ||
Which bird's beak is also adapted to get nectar out of long flowers? | [
"puffin",
"Allen's hummingbird"
] | 1 | Violet sabrewings live in the forests of Central America. The shape of the 's beak is adapted to get nectar out of long flowers.
Figure: violet sabrewing. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ... | Look at the picture of the violet sabrewing.
The violet sabrewing has a long, thin beak. Its beak is adapted to get nectar out of long flowers. The violet sabrewing's long, thin beak can reach deep into the flowers.
Now look at each bird. Figure out which bird has a similar adaptation.
The Allen's hummingbird has a lon... | |
Which of these states is farthest north? | [
"New Mexico",
"Arkansas",
"California",
"Idaho"
] | 3 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Idaho is farthest north. | ||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magni... | |
What is the capital of Massachusetts? | [
"Davenport",
"Raleigh",
"Boston",
"Cambridge"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Boston is the capital of Massachusetts. | |||
Which better describes the Great Victoria Desert ecosystem? | [
"It has dry, thin soil. It also has only a few types of organisms.",
"It has a small amount of rain. It also has many different types of organisms."
] | 1 | Figure: Great Victoria Desert.
The Great Victoria Desert is a desert ecosystem in southern Australia. | 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 desert is a type of ecosystem. Deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, the Great Victoria Desert has a small amount of rain. It also has many different types of organisms. | |
What can Britney and Devon trade to each get what they want? | [
"Britney can trade her tomatoes for Devon's broccoli.",
"Devon can trade her broccoli for Britney's oranges.",
"Britney can trade her tomatoes for Devon's sandwich.",
"Devon can trade her almonds for Britney's tomatoes."
] | 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.
Britney and Devon open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Britney wante... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Britney wanted broccoli in her lunch and Devon was hoping for tomatoes. Look at the labeled part of the images.
Britney has tomatoes. Devon 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. | ||
Complete the sentence.
The mutation in the () affected the structure and function of the (). | [
"AcrB gene . . . AcrB protein",
"AcrB protein . . . AcrB gene"
] | 0 | The following passage describes the effects of a gene mutation, which is a permanent change in a gene. Read the passage and then follow the instructions below.
Antibiotics are substances that get inside bacterial cells and cause them to die. Doctors often use antibiotics to kill bacteria that cause infections, such as... | closed choice | grade6 | natural science | biology | Genes to traits | Describe the effects of gene mutations on organisms | An organism's genes contain information about its proteins. Each gene encodes, or contains the instructions for making, one protein or a group of proteins.
A permanent change in a gene is called a mutation. Because a mutation changes a gene, the mutation may change the structure of the protein encoded by that gene.
The... | A mutation in a gene may affect the protein it encodes.
So, the mutation in the AcrB gene affected the structure and function of the AcrB protein. | |
Not supported with pagination yet | Which change best matches the sentence?
The ground in an area shakes. | [
"earthquake",
"erosion",
"wildfire"
] | 0 | closed choice | grade3 | natural science | earth-science | Earth events | Classify changes to Earth's surface I | |||
Not supported with pagination yet | Which closing is correct for a letter? | [
"Your nephew,\nMax",
"Your Nephew,\nMax"
] | 0 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Select the organism in the same genus as the silver gull. | [
"Caprimulgus macrurus",
"Polysticta stelleri",
"Chroicocephalus scopulinus"
] | 2 | This organism is a silver gull. Its scientific name is Chroicocephalus novaehollandiae. | 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 silver gull's scientific name is Chroicocephalus novaehollandiae. The first word of its scientific name is Chroicocephalus.
Caprimulgus macrurus is in the genus Caprimulgus. The first word of its scientific name is Caprimulgus. So, Caprimulgus macrurus and Chroicocephalus novaehollandiae are not in the same genus.
Po... | |
Not supported with pagination yet | How long is a long-distance running race? | [
"10 yards",
"10 miles"
] | 1 | Select the better estimate. | closed choice | grade3 | 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 long-distance running race is 10 miles.
10 yards is too short. |
Which solution has a higher concentration of blue particles? | [
"Solution B",
"Solution A",
"neither; their concentrations are the same"
] | 1 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | grade7 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... | |
Which of the following could Barry's test show? | [
"the amount of bacteria in the water before it was filtered",
"whether the filter was clogged",
"whether an inexpensive filter would become clogged more often"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
What is the capital of Connecticut? | [
"New Haven",
"Pierre",
"Olympia",
"Hartford"
] | 3 | 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 Wisconsin? | [
"Milwaukee",
"Green Bay",
"Grand Rapids",
"Madison"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Madison is the capital of Wisconsin. | |||
Is peridotite a mineral or a rock? | [
"mineral",
"rock"
] | 1 | Peridotite has the following properties:
not made by living things
solid
no fixed crystal structure
coarse-grained texture
naturally occurring
not a pure substance | closed choice | grade8 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | The properties of peridotite match the properties of a rock. So, peridotite is a rock. | |
Not supported with pagination yet | Complete the statement. Assume that the motorcycle's mass did not change.
The gravitational potential energy stored between the motorcycle and Earth () as Lamar rode up the hill. | [
"decreased",
"increased",
"stayed the same"
] | 1 | Read the text about an object in motion.
Lamar rode his motorcycle from the bottom of a hill to the top of the hill. | closed choice | grade7 | 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 the motorcycle and the center of Earth changed.
The top of the hill is higher than the bottom of the hill. As Lamar rode toward the top of the hill, the distance between the motorcycle and the center of Earth increased. So, the gravitational potential energy stored between the motor... |
Not supported with pagination yet | Which closing is correct for a letter? | [
"See you soon,\nAva",
"see you soon,\nAva"
] | 0 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Which figure of speech is used in this text?
I've heard that Judith & Co. is downsizing, so I'm happy to see that their store in downtown Greenville will remain open for now. | [
"euphemism",
"hyperbole"
] | 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 a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Downsizing is an indirect way of saying that the company is planning on firing employees, closing shops or branches, and/or reducing its budget. | |
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, but some of them are different shapes. | closed choice | grade6 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | 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 | Based on this information, what is this pea plant's phenotype for the pea shape trait? | [
"round peas",
"EE"
] | 0 | In a group of pea plants, some individuals have round peas and others have wrinkled peas. In this group, the gene for the pea shape trait has two alleles. The allele E is for round peas, and the allele e is for wrinkled peas.
A certain pea plant from this group has round peas. This plant has two alleles for round peas. | 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 pea plant's observable version of the pea shape trait is round peas. So, the plant's phenotype for the pea shape trait is round peas. |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 2.",
"The magnitude of the magnetic force is greater in Pair 1."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... | |
What is the capital of Nevada? | [
"Helena",
"Reno",
"Carson City",
"Denver"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Carson City is the capital of Nevada. | |||
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Even after Tim warned Julia to be careful, she broke his handmade ceramic bowl when she dropped it on her foot.",
"Even after Tim warned Julia to be careful, she dropped his handmade ceramic bowl on her foot and broke it."
] | 1 | closed choice | grade10 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun it could refer to his handmade ceramic bowl or her foot.
Even after Tim warned Julia to be careful, she dropped his handmade ceramic bowl on her foot and broke it.
The second answer choice shows a possible correction for the vague pronoun reference... | |
Not supported with pagination yet | How long is a sofa? | [
"2 millimeters",
"2 centimeters",
"2 meters",
"2 kilometers"
] | 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 sofa is 2 meters.
2 millimeters and 2 centimeters are too short. 2 kilometers is too long. |
Not supported with pagination yet | Which figure of speech is used in this text?
Dr. Todd is unhappy with her new assistant because simple tasks, like fetching coffee, take him years to finish. | [
"oxymoron",
"hyperbole"
] | 1 | 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 hyperbole, an obvious exaggeration that is not meant to be taken literally.
Take him years to finish is an exaggeration, since it probably does not take him entire years to fetch coffee. | |
Which property do these three objects have in common? | [
"hard",
"soft",
"yellow"
] | 1 | Select the best answer. | closed choice | grade4 | 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 hard object does not change shape when pressed or squeezed. None of the objects are hard.
A soft object changes shape when pressed or squeezed. All three objects are soft.
Yellow is a color.
This color is yellow. None of the objects are yellow.
The... | |
Which of the following could Quinn's test show? | [
"if the new turbine could turn easily",
"whether the new turbine could produce 10% more electricity",
"how much the new turbine would weigh"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade7 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 0 | Figure: Kosice.
Kosice is a town in the European country of Slovakia. The sky in Kosice cleared this morning because a high pressure system moved over the town.
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.
Kosice is a town in the European country of Slovakia. The sky in Kosice cleared this morning because a high pressure system moved over the town.
The underlined part of the passage tells you about the barometric pressure in Kosice this morning. This passage describes the atmosphere at a certa... | |
Not supported with pagination yet | What does this Works Cited entry indicate about the cited work?
Kulligan, Ian K. "First of Kate Brown's Ethics Bills Sent to Senate Floor." The Oregonian 28 Apr. 2015: n. pag. Web. 2 May 2015. | [
"It is a newspaper article.",
"It is a short story.",
"It is a poem."
] | 0 | closed choice | grade11 | language science | reference-skills | Research skills | Understand a Works Cited entry (MLA 7th edition) | When writing research papers, you will often be asked to follow a particular style guide for your citations. One popular style guide is the Modern Language Association (MLA) Handbook.
Below are the basic formats for some common types of Works Cited entries. Consult the MLA Handbook for a complete list.
Books:
Format | ... | Look closely at the Works Cited entry:
Kulligan, Ian K. "First of Kate Brown's Ethics Bills Sent to Senate Floor." The Oregonian 28 Apr. 2015: n. pag. Web. 2 May 2015.
You can tell that the cited work is a newspaper article because of the entry's formatting. Entries for newspaper articles include the author of the arti... | |
Select the organism in the same species as the domestic cat. | [
"Felis margarita",
"Pelecanus crispus",
"Felis catus"
] | 2 | This organism is a domestic cat. Its scientific name is Felis catus. | 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... | A domestic cat's scientific name is Felis catus.
Felis catus is in the same genus as Felis margarita, but they are not in the same species.
Organisms in the same species have the same scientific names. Felis catus and Felis margarita are different species within the same genus.
Pelecanus crispus does not have the same ... | |
Which of the following could Ethan's test show? | [
"how much athletes would sweat in the fabric",
"how long it would take the sample fabric to dry after it absorbed one drop of water",
"if the sample fabric would absorb one drop of water in less than one second"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade7 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in sample A has more mass than each particle in sample B. The particles in sample A also have a higher average speed than the particles 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 ... | |
Not supported with pagination yet | Which figure of speech is used in this text?
Hello darkness, my old friend
I've come to talk with you again
Because a vision softly creeping
Left its seeds while I was sleeping
—Paul Simon, "The Sound of Silence" | [
"apostrophe",
"anaphora"
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses apostrophe, a direct address to an absent person or a nonhuman entity.
Hello darkness, my old friend is a direct address to the darkness, a nonhuman entity. | |
Not supported with pagination yet | What is the mass of a passenger airplane? | [
"45 ounces",
"45 tons",
"45 pounds"
] | 1 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of a passenger airplane is 45 tons.
45 ounces and 45 pounds are both too light. |
Is the following statement about our solar system true or false?
The smallest planet is made mainly of rock. | [
"false",
"true"
] | 1 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | The table tells you that the smallest planet is Mercury and that Mercury is made mainly of rock. So, the smallest planet is made mainly of rock. | |
Not supported with pagination yet | What do these two changes have in common?
a banana getting ripe on the counter
mixing glue and laundry powder to create putty | [
"Both are only physical changes.",
"Both are caused by heating.",
"Both are chemical changes.",
"Both are caused by cooling."
] | 2 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
A banana getting ripe on the counter is a chemical change. As a banana ripens, the type of matter in it changes. The peel changes color and the inside becomes softer and sweeter.
Mixing glue and laundry powder to create putty is a chemical change. The putty is a different type of matter... | |
Not supported with pagination yet | How long does it take to peel a banana? | [
"12 seconds",
"12 minutes"
] | 0 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose units of time | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to peel a banana is 12 seconds.
12 minutes is too slow. |
What is the capital of Idaho? | [
"Missoula",
"Santa Fe",
"Olympia",
"Boise"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Boise is the capital of Idaho. | |||
Based on the table, how is siltstone formed? | [
"by the pressing of layers of sediment together",
"by the cooling and hardening of melted rock"
] | 0 | This table compares different types of rock. | closed choice | grade6 | language science | writing-strategies | Visual elements | Read graphic organizers | A graphic organizer is a chart or picture that shows how ideas, facts, or topics are related to one another.
When you read, look for graphic organizers included in the text. You can use these images to find key information. You can also create your own graphic organizers with information that you've read. Doing this ca... | In a table, each cell gives information related to its row and column. This table compares different types of rock.
Look in the Examples column and find siltstone. Follow the row to the middle column to see how it is formed. The middle column tells you that siltstone is formed by the pressing of layers of sediment toge... | |
Which property do these three objects have in common? | [
"scratchy",
"slippery",
"bouncy"
] | 2 | Select the best answer. | closed choice | grade4 | 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 scratchy object is rough and itchy against your skin. The rubber ball is not scratchy.
A slippery object is hard to hold onto or stand on. The spring is not slippery.
A bouncy object will bounce back from the floor if you drop it. All three objects... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Sophie has a scar on her left elbow. | [
"acquired",
"inherited"
] | 0 | 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 word would you find on a dictionary page with the following guide words?
plea - prefer | [
"purpose",
"pop"
] | 1 | closed choice | 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 pop is between the guide words plea - prefer, it would be found on that page. | |
Not supported with pagination yet | Select the vertebrate. | [
"bull ant",
"flower hat jellyfish",
"black orb weaver spider",
"box turtle"
] | 3 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade5 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A bull ant is an insect. Like other insects, a bull ant is an invertebrate. It does not have a backbone. It has an exoskeleton.
Like other spiders, a black orb weaver spider is an invertebrate. It does not have a backbone. It has an exoskeleton.
A box turtle is a reptile. Like other reptiles, a box turtle is a vertebra... |
Not supported with pagination yet | Which figure of speech is used in this text?
Reggie's '64 Impala groaned as he turned the ignition. Yet again he resolved to refurbish it over the summer. | [
"metaphor",
"personification"
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses personification, giving human characteristics to nonhuman things.
Reggie's '64 Impala groaned describes the car as if it were human. | |
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"Wood is a body part of a plant. It is formed in nature.",
"Calcite is formed in nature. It is a pure substance.",
"Hematite is formed in nature. It is a pure substance."
] | 0 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify minerals using properties | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Calcite is a mineral.
Hematite is a mineral.
Wood is a body part of a plant. But minerals are not made by living things.
So, wood is not a mineral. | |
What is the capital of Colorado? | [
"Phoenix",
"Santa Fe",
"Birmingham",
"Denver"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Denver is the capital of Colorado. | |||
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Grace,",
"Dear grace,"
] | 0 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second greeting is correct:
Its first word is capitalized, and it ends with a comma. Grace is capitalized because it is a proper noun. | |
What is the direction of this push? | [
"away from the boy's hands",
"toward the boy's hands"
] | 0 | A boy pushes his toy cars with his hands, and they roll forward. | closed choice | grade2 | natural science | physics | Force and motion | Identify pushes and pulls | One object can make another object move with a push or a pull.
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 boy pushes his toy cars away from himself, and they roll forward. The direction of the push is away from the boy's hands. | |
What is the capital of Utah? | [
"Salt Lake City",
"Seattle",
"Boise",
"Helena"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Salt Lake City is the capital of Utah. | |||
Which property do these three objects have in common? | [
"slippery",
"sweet",
"salty"
] | 2 | Select the best answer. | closed choice | grade3 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
Sugar has a sweet taste. None of the objects are sweet.
Potato chips have a salty taste. All three objects are salty.
A slippery object is hard to hold onto or stand on. The potato chips and the pretzel are not slippery.
The property that all three o... | |
Not supported with pagination yet | Which correctly shows the title of an article? | [
"\"Life on the moon?\"",
"\"Life on the Moon?\""
] | 1 | closed choice | grade4 | language science | capitalization | Formatting | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The words on and the are not important, so they should not be capitalized.
The correct title is "Life on the Moon?" | |
Not supported with pagination yet | Using only these supplies, which question can Andy investigate with an experiment? | [
"Are dishes cleaner when washed with liquid dish detergent or with bar soap?",
"Are dishes washed in a dishwasher cleaner than dishes washed by hand?",
"Are dishes cleaner when washed with a soapy sponge or with a soapy rag?"
] | 0 | Andy is washing dishes after cooking his dinner. He notices that some of the dishes still feel oily after being washed. He wonders what factors affect how clean dishes are after they are washed. So, he decides to design an experiment. He has the following supplies available:
a sponge
liquid dish detergent
a bar of soap... | 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... | |
Select the bird below. | [
"mandarinfish",
"black howler",
"goldfish",
"bald eagle"
] | 3 | Birds have feathers, two wings, and a beak.
Birds are warm-blooded. Warm-blooded animals can control their body temperature.
A robin 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. | A black howler is a mammal. It has hair and feeds its young milk.
Howler monkeys have loud calls, or howls. Their calls can be heard over three miles away!
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.
A bald... | |
Which of these continents does the prime meridian intersect? | [
"Asia",
"Europe",
"South America"
] | 1 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Europe. It does not intersect South America or Asia. | ||
What is the capital of Texas? | [
"Austin",
"Montpelier",
"Baton Rouge",
"Boston"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Austin is the capital of Texas. | |||
Which continent is highlighted? | [
"Asia",
"Antarctica",
"Australia"
] | 1 | 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 Antarctica. | ||
Which country is highlighted? | [
"Saint Vincent and the Grenadines",
"Barbados",
"Saint Lucia",
"Cuba"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Barbados. | |||
Not supported with pagination yet | Which word does not rhyme? | [
"bite",
"fine",
"nine"
] | 0 | 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 fine and nine rhyme. They both end with the ine sound.
The word bite does not rhyme. It ends with a different sound. | |
Not supported with pagination yet | Is a hockey puck 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 hockey puck is a good or a service, ask these questions:
Is a hockey puck something you can touch? Yes.
Is a hockey puck a job you might pay someone else to do? No.
So, a hockey puck is a good. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Wesley spoke at the city council meeting, claiming the new recycling regulations were draconian. | [
"Greek history",
"a fairy tale"
] | 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 draconian is Greek history.
Draco, a government official in seventh-century Athens, Greece, wrote a code of laws that called for severe punishments for even minor offenses.
The allusion draconian means harsh. | |
Identify the question that Candice's experiment can best answer. | [
"Do radish plants grown under bright light have more leaves than radish plants grown under dim light?",
"Do radishes grown under bright light get bigger than radishes grown under dim light?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Candice planted 20 radish plants in a greenhouse, putting each plant in its own pot. She placed ten of the pots under bright light and the other ten pots under dim light. Candice watered all the plants twice a day. Afte... | 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... | ||
Which of the following could Garrett's test show? | [
"which side of the roof got more sun over one day",
"the amount of sunlight the roof would get throughout the year",
"how many solar panels could fit on each side of the roof"
] | 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 | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | What information supports the conclusion that Sanjay inherited this trait? | [
"Sanjay's biological parents have freckles on their noses just as Sanjay does.",
"Sanjay has freckles on his nose and shoulders.",
"Sanjay and his biological mother have pale skin."
] | 0 | Read the description of a trait.
Sanjay has freckles. | closed choice | grade7 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade3 | natural science | physics | Magnets | Identify magnets that attract or repel | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. | ||
Not supported with pagination yet | What do these two changes have in common?
a banana getting ripe on the counter
plants making food from sunlight, air, and water | [
"Both are caused by heating.",
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are chemical changes."
] | 3 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
A banana getting ripe on the counter is a chemical change. As a banana ripens, the type of matter in it changes. The peel changes color and the inside becomes softer and sweeter.
Plants making food is a chemical change. Plants use energy from sunlight to change air and water into food. ... | |
Not supported with pagination yet | How long does it take to fly across the United States in an airplane? | [
"6 seconds",
"6 hours"
] | 1 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose units of time | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to fly across the United States in an airplane is 6 hours.
6 seconds is too fast. |
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.