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Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"When Eva returned to the apartment that evening, she greeted Mary with a hug.",
"Eva greeted Mary with a hug when she returned to the apartment that evening."
] | 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 second answer choice contains a vague pronoun reference. The pronoun she could refer to Eva or Mary.
Eva greeted Mary with a hug when she returned to the apartment that evening.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is cl... | |
Identify the question that Alana's experiment can best answer. | [
"Are eggs more likely to float in fresh water or salty water?",
"Does the amount of water in a glass affect whether eggs sink or float in the water?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Alana poured four ounces of water into each of six glasses. Alana dissolved one tablespoon of salt in each of three glasses, and did not add salt to the other three. Then, Alana placed an egg in one glass and observed i... | 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 | What does the idiom in this text suggest?
Mr. and Mrs. Hartman usually see eye to eye, but not when it comes to the controversial mayoral race. | [
"Mr. and Mrs. Hartman are not politically active.",
"Mr. and Mrs. Hartman usually agree."
] | 1 | closed choice | grade7 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An idiom is an expression that cannot be understood literally. Its meaning must be learned.
The assignment was a piece of cake. | The text uses an idiom, an expression that cannot be understood literally.
The idiom see eye to eye suggests that Mr. and Mrs. Hartman usually agree. When you see eye to eye with someone, you share their opinion. | |
Not supported with pagination yet | What information supports the conclusion that Stefan acquired this trait? | [
"Some scars fade more quickly than others.",
"Stefan's scar was caused by an accident. He cut his arm when he fell off his bicycle."
] | 1 | Read the description of a trait.
Stefan has a scar on his right arm. | closed choice | grade5 | natural science | biology | Traits and heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
What is the capital of Hawaii? | [
"Phoenix",
"Honolulu",
"Juneau",
"Frankfort"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Honolulu is the capital of Hawaii. | |||
In this food web, which organism contains matter that eventually moves to the parasol fungus? | [
"black racer",
"silver maple",
"gray fox"
] | 1 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | Interpret food webs II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows to the parasol fungus.There is one path matter can take from the silver maple to the parasol fungus: silver maple->beaver->black bear->parasol fungus. gray fox. There are two arrows pointing from the gr... | |
Not supported with pagination yet | Which text uses the word peruse in its traditional sense? | [
"The detective leisurely perused the newspaper, hoping to go unnoticed by the suspect during the stakeout.",
"The detective carefully perused the newspaper, hoping to find a coded message hidden in the personal ads."
] | 1 | closed choice | grade9 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The second text uses peruse in its traditional sense: to examine in detail.
The detective carefully perused the newspaper, hoping to find a coded message hidden in the personal ads.
The first text uses peruse in its nontraditional sense: to look through in a casual manner.
The detective leisurely perused the newspaper,... | |
Not supported with pagination yet | Is this a run-on sentence?
At the Morbid Anatomy Museum in Brooklyn, students can take taxidermy workshops in which they learn how to skin and stuff dead mice. | [
"no",
"yes"
] | 0 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify run-on sentences | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A run-on sentence is formed when two sentences are run together, joined by just a comma or by no punctuation at all. If only a comma is used, the run-on is called a comma s... | This is not a run-on sentence. It is not formed from two sentences that have been run together without appropriate punctuation.
At the Morbid Anatomy Museum in Brooklyn, students can take taxidermy workshops in which they learn how to skin and stuff dead mice. | |
Not supported with pagination yet | How long is an adult alligator? | [
"12 inches",
"12 yards",
"12 miles",
"12 feet"
] | 3 | Select the best estimate. | closed choice | grade8 | natural science | units-and-measurement | Units and measurement | Choose customary 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 customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of an adult alligator is 12 feet.
12 inches is too short. 12 yards and 12 miles are too long. |
Which of these states is farthest west? | [
"Wisconsin",
"Rhode Island",
"Texas",
"Montana"
] | 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 west arrow is pointing. Montana is farthest west. | ||
Not supported with pagination yet | Based on this information, what is Twinkle's phenotype for the leg color trait? | [
"white legs",
"yellow legs"
] | 0 | In a group of chickens, some individuals have white legs and others have yellow legs. In this group, the gene for the leg color trait has two alleles. The allele for yellow legs (l) is recessive to the allele for white legs (L).
Twinkle is a chicken from this group. Twinkle has the homozygous genotype LL for the leg co... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Twinkle's genotype for the leg color gene is LL. Twinkle's genotype of LL has only L allelles. The L allele is for white legs. So, Twinkle's phenotype for the leg color trait must be white legs.
To check this answer, consider whether Twinkle's alleles are dominant or recessive. The allele for yellow legs (l) is recessi... |
Not supported with pagination yet | Select the one substance that is not a rock. | [
"Scoria is formed in nature. It is not made by living things.",
"Sandstone is a solid. It is not a pure substance.",
"Bronze is made by humans. It is not a pure substance."
] | 2 | 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.
Sandstone is a rock.
Scoria is a rock.
Bronze is made by humans. But rocks are not made by living things.
So, bronze is not a rock. | |
What is the name of the colony shown? | [
"New York",
"North Carolina",
"New Jersey",
"South Carolina"
] | 1 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | |||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
smother - spoon | [
"snap",
"steak"
] | 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 snap is between the guide words smother - spoon, it would be found on that page. | |
Which continent was involved in the Seven Years' War? | [
"Australia",
"South America"
] | 1 | The French and Indian War took place in North America in the 1750s and 1760s. That war was part of a much larger conflict known as the Seven Years' War. The map below highlights the countries and territories that fought in the Seven Years' War. Use the map to answer the question below. | closed choice | grade8 | social science | us-history | The American Revolution | Causes of the American Revolution: the French and Indian War | Look at the map.
The map shows that the conflict involved countries and territories throughout Europe, South America, Africa, Asia, and North America. The only continents not involved were Australia, where no Europeans had settled, and Antarctica, where no humans lived.
The French and Indian War was part of a global wa... | ||
Which of the following could Ruth and Alexandra's test show? | [
"if the concrete from each batch took the same amount of time to dry",
"if a new batch of concrete was firm enough to use"
] | 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 | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Identify the question that Devin's experiment can best answer. | [
"Can pennies hold more drops of pure water or water mixed with hand soap?",
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Devin used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Devin recorded the number of drops he could add before the wa... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Which animal's mouth is also adapted to get insects out of burrows? | [
"proboscis monkey",
"tamandua"
] | 1 | Aardvarks eat insects such as ants and termites. These insects often live in holes called burrows. The 's mouth is adapted to get insects out of burrows.
Figure: aardvark. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the aardvark.
A tube-shaped snout helps the aardvark reach into a burrow. A long, sticky tongue helps it catch the insects.
Now look at each animal. Figure out which animal has a similar adaptation.
The tamandua has a tube-shaped snout and a long, sticky tongue. Its mouth is adapted to eat insect... | |
Not supported with pagination yet | Select the solid. | [
"fruit punch",
"pipe cleaner",
"coffee",
"caramel sauce"
] | 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... | Coffee is a liquid. A liquid takes the shape of any container it is in. If you pour coffee into a different container, the coffee will take the shape of that container. But the coffee will still take up the same amount of space.
Caramel sauce is a liquid. A liquid takes the shape of any container it is in. If you pour ... | |
Not supported with pagination yet | Which sentence is more formal? | [
"California, a.k.a. the Golden State, is the most populous state in the United States.",
"California, sometimes called the Golden State, is the most populous state in the country."
] | 1 | closed choice | grade5 | language science | writing-strategies | Author's purpose and tone | Which sentence is more formal? | Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing:
Type | Examples
slang | cool, awesome
idioms | knock your socks off
conversational language | gonna, kinda, yeah
abbreviated language | ASAP, FYI
overly simple or imprecise lan... | The first sentence is less formal. You can tell because it uses abbreviated language (a.k.a.).
The second sentence does not use abbreviated language, so it is more formal. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Mrs. Cooper, you point out that childhood obesity rates have skyrocketed, but are you aware that rainforests provide critical habitats for some of the world's rarest plants and animals? | [
"false dichotomy: an argument that presents only two choices when more options exist",
"red herring: the use of a completely unrelated topic or idea"
] | 1 | closed choice | grade8 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that obesity rates and rainforests are somehow interconnected. However, these two ideas aren't related. This illustrates a type of logical fallacy known as a red herring. | |
Which is the main persuasive appeal used in this ad? | [
"ethos (character)",
"logos (reason)",
"pathos (emotion)"
] | 0 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to ethos, or character. It focuses on the brand's reputation among customers. | ||
Is schist a mineral? | [
"yes",
"no"
] | 1 | Schist has the following properties:
solid
not made by living things
found in nature
no fixed crystal structure
made mostly of pyroxene | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Schist does not have all the properties of a mineral. So, schist is not a mineral. | |
Not supported with pagination yet | How long does it take to go for a walk with a dog? | [
"11 seconds",
"11 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 go for a walk with a dog is 11 minutes.
11 seconds is too fast. |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 0 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | 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, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The north pole of one magnet is closest to the south pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Vincent, you didn't vote in the last election, so you clearly have no regard for the democracy in which we live. | [
"false dichotomy: an argument that presents only two choices when more options exist",
"ad hominem: a personal attack against one's opponent"
] | 0 | closed choice | grade6 | 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 Vincent must not care about democracy, because he didn't vote in the election. However, there may be a number of reasons why Vincent didn't vote in the election. This illustrates a type of logical fallacy known as a false dichotomy. | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear Mrs. Eaton,",
"Dear mrs. eaton,"
] | 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 greeting is correct:
Its first word is capitalized, and it ends with a comma. Mrs. Eaton is capitalized because it is a proper noun. | |
Which country is highlighted? | [
"Kiribati",
"Tuvalu",
"Tonga",
"Fiji"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | |||
Which better describes the Kaeng Krachan National Park ecosystem? | [
"It has year-round rain. It also has soil that is poor in nutrients.",
"It has soil that is poor in nutrients. It also has only a few types of organisms."
] | 0 | Figure: Kaeng Krachan National Park.
Kaeng Krachan National Park is a tropical rain forest ecosystem in western Thailand. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A tropical rain forest is a type of ecosystem. Tropical rain forests have the following features: year-round rain and warm temperatures, soil that is poor in nutrients, and many different types of organisms. So, Kaeng Krachan National Park has year-round rain. It also has soil that is poor in nutrients. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Ling had her fifteen minutes when her video of kayaking with dolphins went viral. | [
"modern history",
"a song"
] | 0 | closed choice | grade7 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion fifteen minutes is modern history.
In a catalog that accompanied an exhibit of his work, pop artist Andy Warhol said, "In the future, everybody will be world-famous for fifteen minutes," meaning that fame would be briefly available even to those who did nothing spectacular.
The allusion fifte... | |
Not supported with pagination yet | Complete the statement.
Nickel is (). | [
"an elementary substance",
"a compound"
] | 0 | Nickel is a metal that is used in coins and in rechargeable batteries. The chemical formula for nickel is Ni. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using chemical formulas | Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For s... | You can tell whether nickel is an elementary substance or a compound by counting the number of symbols in its chemical formula. A symbol contains either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for nickel is Ni. This formula contains one symbol: Ni. So, the f... |
Not supported with pagination yet | Complete the statement.
Trichlorofluoromethane is (). | [
"a compound",
"an elementary substance"
] | 0 | Trichlorofluoromethane was once used in refrigerators and fire extinguishers. It is no longer used because it harms the atmosphere's ozone layer. The chemical formula for trichlorofluoromethane is CCl3F. | closed choice | grade6 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using chemical formulas | 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 ... | You can tell whether trichlorofluoromethane is an elementary substance or a compound by counting the number of atomic symbols in its chemical formula. An atomic symbol consists of either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for trichlorofluoromethane, CCl... |
Select the organism in the same species as the small-mouth salamander. | [
"Ambystoma texanum",
"Taricha granulosa",
"Lissotriton helveticus"
] | 0 | This organism is a small-mouth salamander. Its scientific name is Ambystoma texanum. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A small-mouth salamander's scientific name is Ambystoma texanum.
Ambystoma texanum has the same scientific name as a small-mouth salamander. So, these organisms are in the same species.
Taricha granulosa does not have the same scientific name as a small-mouth salamander. So, Ambystoma texanum and Taricha granulosa are ... | |
Select the organism in the same species as the Chinese alligator. | [
"Alligator mississippiensis",
"Alligator sinensis",
"Aequorea victoria"
] | 1 | This organism is a Chinese alligator. Its scientific name is Alligator sinensis. | 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 Chinese alligator's scientific name is Alligator sinensis.
Alligator sinensis has the same scientific name as a Chinese alligator. So, these organisms are in the same species.
Aequorea victoria does not have the same scientific name as a Chinese alligator. So, Alligator sinensis and Aequorea victoria are not in the s... | |
What is the direction of this push? | [
"toward her foot",
"away from her foot"
] | 1 | A woman starts to drive her car. She uses a force to push the gas pedal with her foot. | closed choice | grade4 | natural science | physics | Force and motion | Identify directions of forces | A force is a push or a pull that one object applies to another. Every force has a direction.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The woman pushes the gas pedal. The direction of the push is away from her foot. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
From the look on her face, Kiera is carrying an albatross around her neck. | [
"a poem",
"the Bible"
] | 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 an albatross around her neck is a poem.
In Samuel Taylor Coleridge's poem "The Rime of the Ancient Mariner," a sailor shoots and kills an albatross, an action that curses the ship and crew. As his crew members die, the Ancient Mariner feels his guilt hanging like the albatross around his neck... | |
Not supported with pagination yet | Select the mammal. | [
"box turtle",
"painted stork",
"robin",
"sugar glider"
] | 3 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Mammals have hair or fur and feed their young milk. | A robin is a bird. It has feathers, two wings, and a beak.
A robin is a songbird. It sings different songs at different times of the day.
A painted stork is a bird. It has feathers, two wings, and a beak.
Storks wade in shallow water to look for food. Storks eat fish, insects, worms, and other small animals.
A sugar gl... | |
Not supported with pagination yet | Which figure of speech is used in this text?
"Your new hairstyle is so boring!" Diego remarked when his sister showed up with a pink-and-blue mohawk. | [
"verbal irony",
"pun"
] | 0 | closed choice | grade8 | language science | figurative-language | Literary devices | Classify figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses verbal irony, which involves saying one thing but implying something very different.
Boring shows verbal irony because Diego's sister's hairstyle is not at all boring. | |
Not supported with pagination yet | Which text uses the word nauseous in its traditional sense? | [
"Everyone seemed to enjoy the magnolia-scented candle, but Xavier found the smell rather nauseous.",
"Everyone seemed to enjoy the magnolia-scented candle, but it made Xavier feel rather nauseous."
] | 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 nauseous in its traditional sense: causing disgust or nausea.
Everyone seemed to enjoy the magnolia-scented candle, but Xavier found the smell rather nauseous.
The first text uses nauseous in its nontraditional sense: feeling disgusted or nauseated.
Everyone seemed to enjoy the magnolia-scented can... | |
Not supported with pagination yet | Compare the motion of two mountain bikers. Which mountain biker was moving at a higher speed? | [
"a mountain biker who moved 170kilometers in 5hours",
"a mountain biker who moved 125kilometers 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 mountain biker moved and the time it took to move that distance.
One mountain biker moved 170 kilometers in 5 hours.
The other mountain biker moved 125 kilometers in 5 hours.
Notice that each mountain biker spent the same amount of time moving. The mountain biker who moved 170 kilometers moved... | |
Which air temperature was measured within the outlined area shown? | [
"-12°C",
"0°C",
"5°C"
] | 0 | The map below shows air temperatures in the lower atmosphere on March 19, 2017. The outlined area shows an air mass that influenced weather in Asia on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research Laboratory, ... | closed choice | grade6 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show air temperatures.
The map's legend tells you the temperature that each color represents. Colors on the left in the legend represent lower temperatures than colors on the right. For ... | Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent.
5°C.
-12°C is within this range.
0°C and 5°C are outside of this range. | |
Which of these states is farthest south? | [
"Maine",
"West Virginia",
"North Dakota",
"Nebraska"
] | 1 | closed choice | grade4 | 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 south arrow is pointing. West Virginia is farthest south. | ||
Based on the definition of the "Columbian Exchange" above, which arrow could show a part of the Columbian Exchange? | [
"4",
"1",
"2"
] | 2 | In the following questions, you will learn about the Columbian Exchange. Historians use the term "Columbian Exchange" to describe the movement of diseases, animals, plants, people, and resources between the Americas and the rest of the world.
The map below shows different routes around the world. Look at the map. Then ... | closed choice | grade8 | social science | world-history | Age of Exploration | The Columbian Exchange | Remember that the term "Columbian Exchange" describes diseases, animals, plants, people, and resources traveling between the Americas and the rest of the world.
Look back at the map legend. The map legend shows that "the Americas" includes North America and South America.
So, these choices are correct:
These choices ar... | ||
Not supported with pagination yet | Which phrase has a more negative connotation? | [
"look at someone",
"glare at someone"
] | 1 | 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... | Glare at someone has a more negative connotation. If you glare at someone, you look at them in an angry way. | |
Not supported with pagination yet | Suppose Trent decides to join the Photography Club. Which result would be a cost? | [
"Trent will save some time. He would have spent more time in the Theater Club than in the Photography Club.",
"Trent will give up the chance to be in the Theater Club. He would have had more fun in the Theater Club than in the Photography Club."
] | 1 | Trent is deciding whether to join the Theater Club or the Photography Club at school. He wants the club he joins to be fun. But he doesn't want it to take up too much time. | closed choice | grade4 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Trent wants or needs:
Trent will give up the chance to be in the Theater Club. He would have had more fun in the Theater Club than in the Photography Club. |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
dad - disgust | [
"drum",
"desert"
] | 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 desert is between the guide words dad - disgust, it would be found on that page. | |
Not supported with pagination yet | Suppose Maria decides to bake lemon muffins. Which result would be a cost? | [
"Maria will give up the chance to eat apple muffins. She thinks apple muffins are tastier than lemon muffins.",
"Maria will get to eat more muffins. She can make more lemon muffins than apple muffins."
] | 0 | Maria is deciding whether to bake apple muffins or lemon muffins. She wants the muffins to be tasty. But she also wants to make a lot of muffins. | closed choice | grade4 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Maria wants or needs:
Maria will give up the chance to eat apple muffins. She thinks apple muffins are tastier than lemon muffins. |
Which of these states is farthest west? | [
"South Carolina",
"New Jersey",
"Arkansas",
"Alabama"
] | 2 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. Arkansas is farthest west. | ||
What type of rock is tillite? | [
"igneous",
"sedimentary",
"metamorphic"
] | 1 | This is a piece of tillite. It formed from a type of sediment called till. Till is made up of grains of various sizes, from mud to boulders. The grains are often uneven in shape.
Till is deposited by glaciers as they melt. Many layers of till can build up at the mouth of a glacier. Tillite forms when these layers are p... | 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 ... | Tillite is a sedimentary rock. Like other sedimentary rocks, it forms from layers of sediment.
Material that is eroded in nature is called sediment. Till is a type of sediment made up of grains of various sizes, from mud to boulders. Over time, layers of till can build up in places like the mouth of a glacier. The top ... | |
Which country is highlighted? | [
"Papua New Guinea",
"Palau",
"Kiribati",
"the Federated States of Micronesia"
] | 3 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | |||
Not supported with pagination yet | Compare the motion of three sailboats. Which sailboat was moving at the lowest speed? | [
"a sailboat that moved 55kilometers north in 5hours",
"a sailboat that moved 40kilometers east in 5hours",
"a sailboat that moved 45kilometers east in 5hours"
] | 1 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects mov... | Look at the distance each sailboat moved and the time it took to move that distance. The direction each sailboat moved does not affect its speed.
Notice that each sailboat moved for 5 hours. The sailboat that moved 40 kilometers moved the shortest distance in that time. So, that sailboat must have moved at the lowest s... | |
Not supported with pagination yet | Which tense does the sentence use?
Derek shops for fruit and vegetables. | [
"future tense",
"past tense",
"present tense"
] | 2 | closed choice | grade3 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, shops. The verb ends in -s and tells you about something that is true or happening now. | |
Which country is highlighted? | [
"Vanuatu",
"Nauru",
"Kiribati",
"the Marshall Islands"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Nauru. | |||
Which of these oceans does the prime meridian intersect? | [
"the Indian Ocean",
"the Pacific Ocean",
"the Atlantic Ocean"
] | 2 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Atlantic Ocean. It does not intersect the Indian Ocean or the Pacific Ocean. | ||
Not supported with pagination yet | What information supports the conclusion that Zach acquired this trait? | [
"Zach's friend showed him how to ride a bicycle.",
"Zach and his mother both ride bicycles.",
"Zach rides his bicycle to school."
] | 0 | Read the description of a trait.
Zach can ride a bicycle. | 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 text uses the word travesty in its traditional sense? | [
"Darren realized that his essay about the Space Race was a bit inaccurate, but he still thought it a travesty that such an entertaining essay should receive a poor grade.",
"Darren's ill-researched essay about the Space Race received a poor grade because it presented such a travesty of the actual historical event... | 1 | 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.
Darren's ill-researched essay about the Space Race received a poor grade because it presented such a travesty of the actual historical events.
The second text uses travesty in its nontraditional sense: a disappointment or a tragedy... | |
Not supported with pagination yet | Select the gas. | [
"oxygen",
"hammer",
"ruler",
"clothespin"
] | 0 | 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... | Oxygen is a gas. A gas expands to fill a space. Oxygen can be stored in metal tanks. If oxygen leaks out of the tank, the oxygen will expand into the space around the tank.
A clothespin is a solid. A solid has a size and shape of its own. You can open or close a clothespin. But it will still have a size and shape of it... | |
Which trait did Stenophlebia have? Select the trait you can observe on the fossil. | [
"four wings",
"thin legs"
] | 0 | This picture shows a fossil of an ancient insect called Stenophlebia.
Fossils of Stenophlebia have been found in rocks that are more than 140,000,000 years old. | closed choice | grade3 | natural science | earth-science | Fossils | Compare fossils to modern organisms | The way an organism looks or acts is called a trait. Scientists use fossils to learn more about the traits of ancient organisms.
Fossils can preserve the remains of body parts and activities. A fossil of a body part, such as a tail or a wing, can tell you what an organism looked like. A fossil of an organism's activiti... | ||
Not supported with pagination yet | Based on this information, what is Amos's phenotype for the body size trait? | [
"a normal-sized body",
"a dwarf body"
] | 0 | In a group of rats, some individuals have a normal-sized body and others have a dwarf body. In this group, the gene for the body size trait has two alleles. The allele for a dwarf body (b) is recessive to the allele for a normal-sized body (B).
Amos is a rat from this group. Amos has the heterozygous genotype Bb for th... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | You need to determine Amos's phenotype for the body size trait. First, consider the alleles in Amos's genotype for the body size gene. Then, decide whether these alleles are dominant or recessive.
The allele for a dwarf body (b) is recessive to the allele for a normal-sized body (B). This means B is a dominant allele, ... |
Which rhetorical appeal is primarily used in this ad? | [
"ethos (character)",
"logos (reason)",
"pathos (emotion)"
] | 1 | closed choice | grade12 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals.
Appeals to ethos, or character, show the writer or speaker as trustworthy, authoritative, or sharing important values with the audience. An ad that appe... | The ad appeals to logos, or reason, by presenting specific data in support of the claim that the serum has anti-aging effects. | ||
Not supported with pagination yet | Which is stickier? | [
"gold nugget",
"gum"
] | 1 | 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. | Sticky is a property. A sticky material can stick to other things.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the gum is stickier. If you step on chewed gum, it will stick to your foot. | |
Which of these states is farthest north? | [
"Alabama",
"North Carolina",
"Arizona",
"Kansas"
] | 3 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Kansas is farthest north. | ||
What is the name of the colony shown? | [
"New Jersey",
"Maryland",
"North Carolina",
"Alabama"
] | 2 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | |||
Which statement describes the Cerrado ecosystem? | [
"It has warm summers and warm winters.",
"It has soil that is rich in nutrients.",
"It has a small amount of rain."
] | 0 | Figure: Cerrado.
The savanna grasslands of Brazil are called the Cerrado. The Cerrado covers over one-fifth of Brazil and is home to termites, anteaters, armadillos, and other organisms. | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A savanna grassland is a type of ecosystem. Savanna grasslands have the following features: warm summers and warm winters, a rainy season and a dry season, and soil that is poor in nutrients. So, the following statement describes the Cerrado ecosystem: warm summers and warm winters, a rainy season and a dry season, and... | |
Not supported with pagination yet | Would you find the word electricity on a dictionary page with the following guide words?
effort - ember | [
"no",
"yes"
] | 1 | yes or no | grade4 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since electricity is between the guide words effort - ember, it would be found on that page. | |
Is a garbage can a solid, a liquid, or a gas? | [
"a liquid",
"a gas",
"a solid"
] | 2 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | A garbage can is a solid. A solid has a size and shape of its own.
You can open or close a garbage can. But it will still have a size and shape of its own. | ||
Not supported with pagination yet | Select the one substance that is not a rock. | [
"Gneiss is formed in nature. It is a solid.",
"A turtle shell is made by a living thing. It is formed in nature.",
"Trachyte is formed in nature. It is not made by living things."
] | 1 | 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.
Trachyte is a rock.
Gneiss is a rock.
A turtle shell is made by a living thing. But rocks are not made by living things.
So, a turtle shell is not a rock. | |
Which colony was Middle Colonies? | [
"Georgia",
"New York",
"South Carolina"
] | 1 | The map below shows the Thirteen Colonies in 1750. | closed choice | grade4 | social science | us-history | English colonies in North America | Middle colonies: founding and government | The four Middle Colonies are dark blue on the map:
During colonial times, Delaware was usually called the Three Lower Counties on the Delaware, or the Lower Counties for short.
New York claimed part of the land that would later become the state of Vermont. But New Hampshire, a New England colony, also claimed this area... | ||
Not supported with pagination yet | What information supports the conclusion that Colin acquired this trait? | [
"Colin has two pet fish. The fish live in a fish tank together.",
"Colin was not born knowing how to identify different fish. He had to learn this skill."
] | 1 | Read the description of a trait.
Colin is good at identifying fish. | closed choice | grade3 | natural science | biology | Heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample A",
"sample B"
] | 2 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | 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 would smell more? | [
"metal hair clip",
"perfume"
] | 1 | 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. | Smelly is a property. A smelly material has a strong smell.
Look at each picture, one at a time. Imagine smelling the material shown in each picture.
Of the choices, the perfume would smell more. Perfume has a strong smell. | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear aunt Mia,",
"Dear Aunt Mia,"
] | 1 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second greeting is correct:
Its first word is capitalized, and it ends with a comma. Aunt Mia is capitalized because it is a proper noun. | |
Not supported with pagination yet | Based on this information, what is Bagheera's phenotype for the coat pattern trait? | [
"AA",
"a spotted coat"
] | 1 | In a group of leopards, some individuals have a spotted coat and others have a black coat. In this group, the gene for the coat pattern trait has two alleles. The allele A is for a spotted coat, and the allele a is for a black coat.
Bagheera, a leopard from this group, has a spotted coat. Bagheera has two alleles for a... | closed choice | grade8 | 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. Bagheera's observable version of the coat pattern trait is a spotted coat. So, Bagheera's phenotype for the coat pattern trait is a spotted coat. |
Not supported with pagination yet | How long is an adult alligator? | [
"15 inches",
"15 miles",
"15 feet",
"15 yards"
] | 2 | Select the best estimate. | closed choice | grade6 | natural science | units-and-measurement | Units and measurement | Choose customary 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 customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of an adult alligator is 15 feet.
15 inches is too short. 15 yards and 15 miles are too long. |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 1.",
"The magnetic force is weaker in Pair 2."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade4 | natural science | physics | Magnets | Compare strengths of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. | |
Not supported with pagination yet | The city of Princeton has been one of the world's biggest makers of cough drops for many years. But last month, Princeton's cough drop factories were destroyed by floods. What will probably happen to the overall supply of cough drops? | [
"The supply will probably go up.",
"The supply will probably go down."
] | 1 | 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... | Floods destroyed the cough drop factories in Princeton. The number of producers of cough drops went down. So, the supply of cough drops will probably go down. | |
In this food web, which organism contains matter that eventually moves to the parasol fungus? | [
"gray fox",
"swallowtail caterpillar",
"black racer",
"bobcat"
] | 1 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | Interpret food webs II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows to the parasol fungus.There are two paths matter can take from the swallowtail caterpillar to the parasol fungus: swallowtail caterpillar->pine vole->parasol fungus. swallowtail caterpillar->black bear-... | |
Which animal is also adapted to be camouflaged in a sandy desert? | [
"fennec fox",
"skunk"
] | 0 | Horned vipers live in the deserts of Africa and the Middle East. The is adapted to be camouflaged in a sandy desert.
Figure: horned viper. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the horned viper.
The horned viper has sand-colored scales covering its body. It is adapted to be camouflaged in a sandy desert. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The fennec fox has sand-colored fur covering its skin.... | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Best Wishes,\nSandra",
"Best wishes,\nSandra"
] | 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 second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | What is the temperature of the air on a cold, snowy day? | [
"23°F",
"23°C"
] | 0 | Select the better estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Estimate temperatures | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Temperature can be written with units of degrees Fahrenheit (°F) or Celsius (°C). Use the list below to compare the two units.
212°F | Water boils | 100°C
98.6°F | Body temperature | 37°C
68°F ... | The better estimate for the temperature of the air on a cold, snowy day is 23°F.
23°C is too hot. |
What can Nora and Jenna trade to each get what they want? | [
"Nora can trade her tomatoes for Jenna's broccoli.",
"Nora can trade her tomatoes for Jenna's carrots.",
"Jenna can trade her broccoli for Nora's oranges.",
"Jenna can trade her almonds for Nora'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.
Nora and Jenna open their lunch boxes in the school cafeteria. Neither Nora nor Jenna got everything that they wanted. The table ... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Nora wants broccoli. Jenna 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 Arkansas? | [
"Little Rock",
"Tallahassee",
"Oklahoma City",
"Burlington"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Little Rock is the capital of Arkansas. | |||
Not supported with pagination yet | Which greeting is correct for a letter? | [
"dear Ms. Perry,",
"Dear Ms. Perry,"
] | 1 | closed choice | grade3 | 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 second greeting is correct:
Its first word is capitalized, and it ends with a comma. Ms. Perry is capitalized because it is a proper noun. | |
Not supported with pagination yet | What information supports the conclusion that Tucker acquired this trait? | [
"Tucker is most interested in human biology.",
"Tucker learned biology by reading, observing, and experimenting."
] | 1 | Read the description of a trait.
Tucker knows a lot about biology. | closed choice | grade4 | natural science | biology | Traits and heredity | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | |
Not supported with pagination yet | Which tense does the sentence use?
Noah finds old clothes in the attic. | [
"present tense",
"future tense",
"past tense"
] | 0 | closed choice | grade5 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, finds. The verb ends in -s and tells you about something that is true or happening now. | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Not supported with pagination yet | What kind of sentence is this?
How many articles did Walter write before his publisher offered him a book contract? | [
"interrogative",
"imperative",
"declarative"
] | 0 | closed choice | grade8 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence asks something, and it ends with a question mark. It is an interrogative sentence. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Your niece,\nJeanette",
"Your Niece,\nJeanette"
] | 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. | |
Is Daucus carota made up of many cells? | [
"no",
"yes"
] | 1 | This organism is Daucus carota. It is a member of the plant kingdom.
Daucus carota is commonly called a carrot plant. The stem and leaves of the carrot plant are green and grow above ground. The root is often orange and grows underground. When people say they eat carrots, they usually mean the root of the carrot plant! | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Daucus carota is a plant. Plants are made up of many cells. | |
Not supported with pagination yet | Select the one substance that is not a rock. | [
"Conglomerate is a solid. It is formed in nature.",
"An antler is made by a living thing. It is not a pure substance.",
"Slate is not a pure substance. It is formed in nature."
] | 1 | 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.
An antler is made by a living thing. But rocks are not made by living things.
So, an antler is not a rock.
Conglomerate is a rock.
Slate is a rock. | |
Select the organism in the same genus as the black howler. | [
"Lontra canadensis",
"Macropus agilis",
"Alouatta caraya"
] | 2 | This organism is a black howler. Its scientific name is Alouatta caraya. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A black howler's scientific name is Alouatta caraya. The first word of its scientific name is Alouatta.
Lontra canadensis is in the genus Lontra. The first word of its scientific name is Lontra. So, Lontra canadensis and Alouatta caraya are not in the same genus.
This organism and the black howler are in the same genus... | |
Not supported with pagination yet | Which is a complex sentence? | [
"Luke will lend us money for the tickets if we promise to repay him by the end of the year.",
"Judith and her sisters drew a map of the United States and hung it on the wall."
] | 0 | closed choice | grade6 | 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 if.
Luke will lend us money for the tickets if we promise to repay him by the end of the year. | |
Not supported with pagination yet | What kind of sentence is this?
The author finally received recognition for his great work after his children found his old manuscript in the attic and published it. | [
"interrogative",
"exclamatory",
"declarative"
] | 2 | closed choice | grade6 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence tells about something, and it ends with a period. It is a declarative sentence. | |
What is the capital of Nevada? | [
"Las Vegas",
"Phoenix",
"Reno",
"Carson City"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Carson City is the capital of Nevada. | |||
Which of these continents does the prime meridian intersect? | [
"Europe",
"South America",
"North America"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Europe. It does not intersect South America or North America. | ||
Which country is highlighted? | [
"Tonga",
"Tuvalu",
"Kiribati",
"the Marshall Islands"
] | 1 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | |||
Which bird's beak is also adapted to catch insects? | [
"mugimaki flycatcher",
"hanging parrot"
] | 0 | Sand martins eat insects and other small invertebrates. The shape of the 's beak is adapted to catch insects.
Figure: sand martin. | 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 sand martin.
A short, thin beak is light and easy to move. The sand martin uses its beak to grab fast-moving insects while flying.
Now look at each bird. Figure out which bird has a similar adaptation.
The mugimaki flycatcher has a short, thin beak. Its beak is adapted to catch insects.
The h... | |
What is the capital of California? | [
"San Francisco",
"Juneau",
"Sacramento",
"Los Angeles"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Sacramento is the capital of California. | |||
What is the capital of Missouri? | [
"Frankfort",
"Jefferson City",
"Saint Louis",
"Kansas City"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | |||
Select the organism in the same genus as the gray heron. | [
"Hyla cinerea",
"Balearica pavonina",
"Ardea goliath"
] | 2 | This organism is a gray heron. Its scientific name is Ardea cinerea. | 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 gray heron's scientific name is Ardea cinerea. The first word of its scientific name is Ardea.
Balearica pavonina is in the genus Balearica. The first word of its scientific name is Balearica. So, Balearica pavonina and Ardea cinerea are not in the same genus.
Hyla cinerea and Ardea cinerea are not in the same genus.... |
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.