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Not supported with pagination yet | Is a computer a good or a service? | [
"a good",
"a service"
] | 0 | 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 computer is a good or a service, ask these questions:
Is a computer something you can touch? Yes.
Is a computer a job you might pay someone else to do? No.
So, a computer is a good. | |
Not supported with pagination yet | What information supports the conclusion that Bridgette acquired this trait? | [
"Bridgette is in the Air Force. She flies a plane almost every day.",
"Bridgette can fly a plane on cloudy days and at night.",
"A pilot taught Bridgette how to fly a plane."
] | 2 | Read the description of a trait.
Bridgette knows how to fly a plane. | 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 sentence states a fact? | [
"Ennio Morricone composed the music for the 1969 spaghetti western Once Upon a Time in the West.",
"The 1969 spaghetti western Once Upon a Time in the West is director Sergio Leone's worst movie."
] | 0 | closed choice | grade6 | language science | writing-strategies | Developing and supporting arguments | Distinguish facts from opinions | A fact is something that can be proved by research or observation.
Napoleon Bonaparte was shorter than King Louis XVI.
The statement above is a fact. The statement can be proved by researching the height of each man and comparing them.
An opinion is something that a person believes, thinks, or feels. An opinion cannot ... | The second sentence states a fact.
Ennio Morricone composed the music for the 1969 spaghetti western Once Upon a Time in the West.
It can be proved by looking up information about Ennio Morricone in a movie database.
The first sentence states an opinion.
The 1969 spaghetti western Once Upon a Time in the West is direct... | |
Which animal's mouth is also adapted to tear through meat? | [
"tamandua",
"cougar"
] | 1 | Lions are carnivores, or meat eaters. They eat large mammals like zebras and buffalo. The 's mouth is adapted to tear through meat.
Figure: lion. | closed choice | grade3 | 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 lion.
The lion has a large mouth and sharp teeth. Its mouth is adapted to tear through meat. The lion uses its large mouth to grab its prey. It uses its sharp teeth to cut up the meat of the prey into pieces it can swallow.
Now look at each animal. Figure out which animal has a similar adapta... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Mr. Delgado argues that we need to do more to prevent workplace injuries and fatalities. I doubt that someone so socially awkward would know a thing about office safety. | [
"ad hominem: a personal attack against one's opponent",
"appeal to nature: the assumption that natural things are always good"
] | 0 | 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 being socially awkward determines knowledge of workplace safety. This is a personal attack that isn't relevant to Mr. Delgado's desire to prevent workplace injuries. This illustrates a type of logical fallacy known as ad hominem. | |
What is the name of the colony shown? | [
"North Carolina",
"Virginia",
"Connecticut",
"Georgia"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | |||
Which better describes the Galapagos Rift ecosystem? | [
"It has water at the bottom of the ocean. It also has organisms that crawl or stick to the ground.",
"It has no sunlight. It also has many large swimming organisms."
] | 0 | Figure: Galapagos Rift.
The Galapagos Rift is a deep sea ecosystem in the eastern Pacific Ocean. | 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 | The deep sea is a type of ecosystem. Deep sea ecosystems have the following features: water at the bottom of the ocean, no sunlight, and organisms that crawl or stick to the ground. So, the Galapagos Rift has water at the bottom of the ocean. It also has organisms that crawl or stick to the ground. | |
Which property do these three objects have in common? | [
"smooth",
"blue",
"fuzzy"
] | 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.
Blue is a color.
This color is blue. The slippers are blue, but the stuffed dice and the kiwi are not.
A smooth object is not scratchy or rough. The slippers and the stuffed dice are not smooth.
A fuzzy object is covered in soft hair. All three objec... | |
Which of the following could Sophie and Kendall's test show? | [
"if a new batch of concrete was firm enough to use",
"if the concrete from each batch took the same amount of time to dry"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
What can a redwood seed grow into? | [
"a male cone",
"a female cone",
"a new plant"
] | 2 | Redwood seeds grow inside of cones. | closed choice | grade4 | natural science | biology | Plants | Describe and construct conifer life cycles | Conifers are plants that grow cones. Conifers use their cones to reproduce, or make new plants like themselves. How do conifers use their cones to reproduce?
Conifers can grow male and female cones. Male cones make pollen, and female cones make eggs. Pollination is what happens when wind blows pollen from male cones on... | A seed can germinate and grow into a new plant.
The new plant can grow male and female cones. But a seed does not grow into a male cone or a female cone. | |
What is the capital of Alaska? | [
"Fairbanks",
"Buffalo",
"Portland",
"Juneau"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Juneau is the capital of Alaska. | |||
What is the capital of Illinois? | [
"Chicago",
"Topeka",
"Springfield",
"Nashville"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Springfield is the capital of Illinois. | |||
Which of these organisms contains matter that was once part of the kelp? | [
"zooplankton",
"plainfin midshipman",
"sea urchin"
] | 2 | Below is a food web from an ocean ecosystem in Monterey Bay, off the coast of California.
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 | grade6 | 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 that starts from the kelp.There is one path matter can take from the kelp to the sea urchin: kelp->sea urchin. There is one path matter can take from the kelp to the orca: kelp->sea urchin->sea otter->o... | |
What is the direction of this push? | [
"away from the bow string",
"toward the bow string"
] | 0 | An archer shoots an arrow. The bow string quickly pushes the arrow 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 archer shoots the arrow away from his bow. The arrow flies forward quickly. The direction of the push is away from the bow string. | |
What is the name of the colony shown? | [
"New Jersey",
"New York",
"New Hampshire",
"Pennsylvania"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Pennsylvania. | |||
Which trait did Holophagus have? Select the trait you can observe on the fossil. | [
"long legs",
"two fins on its back",
"a large red lump on its head"
] | 1 | This picture shows a fossil of an animal called Holophagus. Holophagus lived in the ocean and gave birth to live young. | closed choice | grade6 | 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 | Which change best matches the sentence?
The ground in an area shakes and trembles. | [
"earthquake",
"flood",
"erosion"
] | 0 | closed choice | grade3 | natural science | earth-science | Earth events | Classify changes to Earth's surface I | |||
Which i in row C? | [
"the pond",
"the theater",
"the grocery store",
"the police department"
] | 1 | closed choice | grade2 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The theater is in row C. | ||
Which property do these three objects have in common? | [
"fuzzy",
"transparent",
"bumpy"
] | 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.
A fuzzy object is covered in soft hair. None of the objects are fuzzy.
You can see clearly through a transparent object. None of the objects are transparent.
A bumpy object is covered in lumps and bumps. All three objects are bumpy.
The property that... | |
Which specific humidity level was measured within the outlined area shown? | [
"10 grams of water vapor per kilogram of air",
"0 grams of water vapor per kilogram of air",
"19 grams of water vapor per kilogram of air"
] | 2 | The map below shows humidity in the lower atmosphere on June 12, 2013. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in South America on that day.
Look at the map. Then, answer the question below.
Data source: United S... | closed choice | grade7 | 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 specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 18 and 24 grams of water vapor per kilogram of air.
19 grams of water vapor per kilogram... | |
Which animal's feet are also adapted for digging? | [
"slender-legged tree frog",
"six-banded armadillo"
] | 1 | Star-nosed moles are found in many parts of North America. They live in burrows. The moles eat earthworms and nuts, which they find in the soil. The feet of the are adapted for digging.
Figure: star-nosed mole. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's feet is one example of an adaptation. Animals' feet can be adapted in different ways. For example, webbed feet might help an animal swim. Feet with thick fur m... | Look at the picture of the star-nosed mole.
The star-nosed mole has long, straight claws. Its feet are adapted for digging. The star-nosed mole uses its claws to break up soil and move it out of the way.
Now look at each animal. Figure out which animal has a similar adaptation.
The six-banded armadillo has long, straig... | |
Which ocean is highlighted? | [
"the Arctic Ocean",
"the Pacific Ocean",
"the Indian Ocean",
"the Southern Ocean"
] | 1 | closed choice | grade6 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Pacific Ocean. | ||
Not supported with pagination yet | Complete the sentence so that it uses personification.
The scenery () the art students, who admired it in appreciative silence. | [
"was inspiring to",
"spoke to"
] | 1 | closed choice | grade10 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the phrase spoke to. It describes the scenery as if it were a person who speaks. | |
Which property matches this object? | [
"scratchy",
"smooth"
] | 1 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A scratchy object is rough and itchy against your skin. The silver ring is not scratchy.
A smooth object is not scratchy or rough. The silver ring is smooth. | |
Not supported with pagination yet | How long is a ladybug? | [
"10 kilometers",
"10 millimeters",
"10 centimeters",
"10 meters"
] | 1 | Select the best estimate. | closed choice | grade6 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using metric units, length can be written with units of millimeters, centimeters, meters, or kilometers. One meter contains 100 centimeters or 1,000 millimeters. So, 1 meter is lar... | The best estimate for the length of a ladybug is 10 millimeters.
10 centimeters, 10 meters, and 10 kilometers are all too long. |
Identify the question that Carson's experiment can best answer. | [
"Does the type of flour used in the muffins affect the number of muffins that turn brown after 30 minutes in the oven?",
"Do muffins made with white flour have larger volumes than muffins made with whole wheat flour?"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Carson made six batches of muffins over the course of one day. He used whole wheat flour in three of the batches and white flour in the other three batches. He divided the batter into muffin tins, using two ounces of ba... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Which word does not rhyme? | [
"seat",
"life",
"heat"
] | 1 | closed choice | grade1 | 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 ip sound.
The words lake and make rhyme. They both end with the ake sound.
The words tip and lake don't rhyme. They end with different sounds. | The words seat and heat rhyme. They both end with the eat sound.
The word life does not rhyme. It ends with a different sound. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Don't feel bad about serving your children that sweet fruit punch with high fructose corn syrup in it. It's derived from real corn, so it must not cause the same health problems as completely artificial sweeteners. | [
"guilt by association: a negative association intended to discredit someone or something",
"appeal to nature: the assumption that natural things are always good",
"straw man: a misrepresentation of an opponent's position that makes it easier to argue against"
] | 1 | closed choice | grade10 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that drinks with high fructose corn syrup aren't bad for you because high fructose corn syrup is derived from a natural ingredient. However, a sweetener isn't necessarily healthy just because it's derived from a natural ingredient. This illustrates a type of logical fallacy known as an appeal to nature. | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
As Michael rushed down the hill, the wind () his ears. | [
"sang in",
"rushed by"
] | 0 | closed choice | grade9 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the phrase sang in. It describes the wind as if it were a singer. | |
What is the capital of Alaska? | [
"Hartford",
"Portland",
"Juneau",
"Las Vegas"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Juneau is the capital of Alaska. | |||
What is the name of the colony shown? | [
"New Jersey",
"North Carolina",
"Connecticut",
"Pennsylvania"
] | 2 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is Connecticut. | |||
Select the organism in the same genus as the Goliath heron. | [
"Ardea cocoi",
"Strix uralensis",
"Falco tinnunculus"
] | 0 | This organism is a Goliath heron. Its scientific name is Ardea goliath. | 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 Goliath heron's scientific name is Ardea goliath. The first word of its scientific name is Ardea.
Falco tinnunculus is in the genus Falco. The first word of its scientific name is Falco. So, Falco tinnunculus and Ardea goliath are not in the same genus.
Strix uralensis is in the genus Strix. The first word of its sci... | |
Which continent is highlighted? | [
"Antarctica",
"Europe",
"Australia"
] | 2 | 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 Australia. | ||
Not supported with pagination yet | Is the following trait inherited or acquired?
Kurt is good at baking. | [
"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... | People are not born knowing how to bake. Instead, many people learn how to bake. So, baking is an acquired trait. | |
Not supported with pagination yet | Which is a simple sentence? | [
"If we hike Bright Angel Trail in the Grand Canyon, we won't see Mooney Falls.",
"Mr. Joseph peeled the tangerine and divided it into sections."
] | 1 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple, compound, or complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
aft... | The second sentence is the simple sentence. It is a single independent clause.
Mr. Joseph peeled the tangerine and divided it into sections. | |
Which solution has a higher concentration of yellow particles? | [
"Solution A",
"neither; their concentrations are the same",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... | |
Not supported with pagination yet | Based on this information, what is Dusty's phenotype for the body hair trait? | [
"a hairless body",
"a hairy body"
] | 0 | In a group of cats, some individuals have a hairy body and others have a hairless body. In this group, the gene for the body hair trait has two alleles. The allele for a hairless body (b) is recessive to the allele for a hairy body (B).
Dusty is a cat from this group. Dusty has the homozygous genotype bb for the body h... | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Dusty's genotype for the body hair gene is bb. Dusty's genotype of bb has only b alleles. The b allele is for a hairless body. So, Dusty's phenotype for the body hair trait must be a hairless body.
To check this answer, consider whether Dusty's alleles are dominant or recessive. The allele for a hairless body (b) is re... |
Not supported with pagination yet | How long does it take to tie your shoes? | [
"23 minutes",
"23 seconds"
] | 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 tie your shoes is 23 seconds.
23 minutes is too slow. |
Not supported with pagination yet | Using only these supplies, which question can Ian investigate with an experiment? | [
"Which of the three types of tomato seeds sprouts the fastest?",
"Does a certain kind of tomato plant grow taller when planted in a clay pot or in a plastic pot?",
"Which type of soil will cause a certain kind of tomato plant to grow the most fruit?"
] | 0 | Ian and his classmates are growing tomato plants in the school garden. He wonders what factors affect how tomato plants grow. So, he decides to design an experiment. He has the following supplies available:
three different types of tomato seeds
one bag of potting soil
five identical clay pots
water | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"love,\nRobert",
"Love,\nRobert"
] | 1 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Which of these states is farthest east? | [
"North Carolina",
"Colorado",
"Michigan",
"North Dakota"
] | 0 | 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 east arrow is pointing. North Carolina is farthest east. | ||
Which animal's neck is also adapted for hunting prey while keeping the rest of its body still? | [
"frigatebird",
"great egret"
] | 1 | Black-headed herons live near wetlands and lakes. They eat mostly fish.
The 's neck helps it grab fish while keeping the rest of its body still. If the heron had to move its body, it might scare the fish away.
Figure: black-headed heron. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's neck is one example of an adaptation. Animals' necks can be adapted in different ways. For example, a large frilled neck might help an animal appear dangerous ... | Look at the picture of the black-headed heron.
The black-headed heron has a long neck. Its neck is adapted for hunting prey while keeping the rest of its body still. This allows the black-headed heron to grab the prey without scaring it away.
Now look at each animal. Figure out which animal has a similar adaptation.
Th... | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
welcome - worst | [
"whom",
"wait"
] | 0 | closed choice | grade3 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since whom is between the guide words welcome - worst, it would be found on that page. | |
Not supported with pagination yet | Using only these supplies, which question can Alexandra investigate with an experiment? | [
"Does dark chocolate or white chocolate melt faster when heated on the stove?",
"Does milk chocolate melt faster when heated in a microwave or on a stove?",
"Does milk chocolate or dark chocolate melt faster when heated on the stove?"
] | 2 | Alexandra leaves some chocolates in her jacket pocket. When she finds the chocolates later, she notices that some of them have melted. She wonders what factors affect how quickly chocolate melts. So, she decides to design an experiment. She has the following supplies available:
one bar of milk chocolate
one bar of dark... | closed choice | grade7 | 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... | |
Identify the question that Madelyn and Evan's experiment can best answer. | [
"Does Madelyn's snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax?",
"Does Madelyn's snowboard slide down a hill in less time when it has a thin layer of wax or a thick layer of wax?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Madelyn applied a thin layer of wax to the underside of her snowboard and rode the board straight down a hill. Then, she removed the wax and rode the snowboard straight down the hill again. She repeated the rides four m... | 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... | ||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | 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,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 2 than in Pair 1. So, the magnit... | |
Which of the following could Arianna's test show? | [
"whether the new turbine could produce 10% more electricity",
"if the new turbine could turn easily",
"how much the new turbine would weigh"
] | 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 | 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... | ||
Not supported with pagination yet | What do these two changes have in common?
making paper from wood
silver jewelry tarnishing | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 3 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Making paper from wood is a chemical change. Paper is made by mixing tiny pieces of wood with special chemicals. The wood reacts with the chemicals to form pulp. Wood and pulp are different types of matter.
Metal turning less shiny over time is called tarnishing. Silver jewelry tarnishi... | |
Not supported with pagination yet | Which would stretch more? | [
"brick path",
"wool hat"
] | 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. | Stretchy is a property. A stretchy material gets longer when you pull on it.
Look at each picture, one at a time. Imagine pulling on the material shown in each picture.
Of the choices, the wool hat would stretch more. If you pull the sides of a wool hat, it will get wider. | |
Not supported with pagination yet | Select the vertebrate. | [
"opossum",
"bess beetle",
"rock lobster",
"fireworm"
] | 0 | 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 bess beetle is an insect. Like other insects, a bess beetle is an invertebrate. It does not have a backbone. It has an exoskeleton.
A rock lobster is a crustacean. Like other crustaceans, a rock lobster is an invertebrate. It does not have a backbone. It has an exoskeleton.
An opossum is a mammal. Like other mammals,... |
Not supported with pagination yet | Select the vertebrate. | [
"mole",
"hissing cockroach",
"fly",
"grasshopper"
] | 0 | 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 fly is an insect. Like other insects, a fly is an invertebrate. It does not have a backbone. It has an exoskeleton.
A grasshopper is an insect. Like other insects, a grasshopper is an invertebrate. It does not have a backbone. It has an exoskeleton.
A mole is a mammal. Like other mammals, a mole is a vertebrate. It h... |
Complete the statement.
Methane is (). | [
"an elementary substance",
"a compound"
] | 1 | The model below represents a molecule of methane. Methane is the main component of natural gas, which is used in homes for heating and cooking. | 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 methane is an elementary substance or a compound.
Step 1: Interpret the model.
.
Use the legend to determine the chemical element represented by each color. The colors and atomic symbols from the legend are shown in the table below. The table also includes the names of the chemical el... | |
Not supported with pagination yet | Which text uses the word disinterested in its traditional sense? | [
"Francesca is happy with her position as class treasurer. Though she would have the support of the student council, she is disinterested in running for student body president.",
"Francesca is excellent in her position as class treasurer. She always manages to be disinterested in student council debates about the ... | 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 disinterested in its traditional sense: unbiased or impartial.
Francesca is excellent in her position as class treasurer. She always manages to be disinterested in student council debates about the allocation of extracurricular funds.
The second text uses disinterested in its nontraditional sense: u... | |
Which is this organism's scientific name? | [
"Brachypelma albopilosum",
"curlyhair tarantula"
] | 0 | This organism is Brachypelma albopilosum. It is also called a curlyhair tarantula. | 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,... | Brachypelma albopilosum is written in italics. The first word is capitalized, and the second word is not.
So, Brachypelma albopilosum is the scientific name. | |
Not supported with pagination yet | What does the allusion in this text suggest?
Liam seems to have the Midas touch. Without any special experience or training, he launched a thriving business and then established a well-respected charity. | [
"Liam is successful at all that he does.",
"Liam has a hands-on approach to his work."
] | 0 | closed choice | grade8 | 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 allusion is a brief reference to something or someone well known, often from history or literature.
"I'd better get home before I turn into a pumpkin!" Lila remarked. | The text uses an allusion, a brief reference to someone or something well known.
The allusion the Midas touch suggests that Liam is successful at all that he does. In Greek mythology, King Midas has the power to turn anything he touches into gold, easily creating value from nothing. | |
Which trait did Priscacara have? Select the trait you can observe on the fossil. | [
"a tail fin",
"a mostly silver body"
] | 0 | This picture shows a fossil of an ancient animal called Priscacara.
In some places, large numbers of Priscacara fossils have been found near each other. This suggests that Priscacara lived in groups. | 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... | ||
Which better describes the Taklamakan Desert ecosystem? | [
"It has long, cold winters. It also has a small amount of rain or snow.",
"It has heavy snow. It also has soil that is frozen year-round."
] | 0 | Figure: Taklamakan Desert.
The Taklamakan Desert is a cold desert ecosystem in northwestern China. | closed choice | grade4 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A cold desert is a type of ecosystem. Cold deserts have the following features: a small amount of rain or snow, dry, thin soil, and long, cold winters. So, the Taklamakan Desert has long, cold winters. It also has a small amount of rain or snow. | |
What is the name of the colony shown? | [
"Tennessee",
"West Virginia",
"Maryland",
"Florida"
] | 2 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Maryland. | |||
Not supported with pagination yet | What is the source of the allusion in the sentence below?
"Edward's personality is very Jekyll and Hyde," Christine told her brother. | [
"literature",
"a song"
] | 0 | closed choice | grade10 | 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 Jekyll and Hyde is literature.
Robert Louis Stevenson's popular Victorian novella Dr. Jekyll and Mr. Hyde tells the story of a man with two distinct personalities. Known to the world as a kind and highly respected doctor, at night he transforms into a monstrous person.
The allusion Jekyll and... | |
Not supported with pagination yet | Which object has more thermal energy? | [
"a 100-gram glass of apple juice at a temperature of 50°F",
"a 100-gram glass of apple juice at a temperature of 75°F"
] | 1 | The objects are identical except for their temperatures. | closed choice | grade3 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter move faster, the temperature goes up. The matter now has both ... | The two glasses of apple juice have the same mass but different temperatures. Since the 75°F glass of apple juice is hotter than the 50°F glass of apple juice, it has more thermal energy. |
Which specific humidity level was measured within the outlined area shown? | [
"0 grams of water vapor per kilogram of air",
"13 grams of water vapor per kilogram of air",
"23 grams of water vapor per kilogram of air"
] | 2 | The map below shows humidity in the lower atmosphere on June 12, 2013. The map shows specific humidity, a measurement of the amount of water vapor in the air. The outlined area shows an air mass that influenced weather in South America on that day.
Look at the map. Then, answer the question below.
Data source: United S... | closed choice | grade7 | 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 specific humidity, a measurement of the amount of water vapor in the air.
The map's legend tells you the specific humidity level that each color represents. Colors on the left in th... | Look at the colors shown within the outlined area. Then, use the legend to determine which specific humidity levels those colors represent.
The legend tells you that this air mass contained air with specific humidity levels between 18 and 24 grams of water vapor per kilogram of air.
23 grams of water vapor per kilogram... | |
Not supported with pagination yet | Complete the sentence.
According to the Ninth Amendment, the Constitution lists () of the rights of the American people. | [
"none",
"some",
"all"
] | 1 | closed choice | grade4 | social science | civics | Government | The Bill of Rights | The Ninth Amendment says that the Constitution lists only some of the rights of the American people. In other words, people have rights other than the ones listed in the Constitution. Even if the Constitution doesn't list a right, the right might still exist. The Bill of Rights lists some rights. But it is not meant to... | ||
Not supported with pagination yet | Which closing is correct for a letter? | [
"Thank You,\nBrenda",
"Thank you,\nBrenda"
] | 1 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Which type of sentence is this?
An avid reader, Liam attends weekly book club meetings, and he finishes several novels every month. | [
"compound",
"simple",
"complex",
"compound-complex"
] | 0 | closed choice | grade8 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is compound. It is made up of two independent clauses joined by the coordinating conjunction and.
An avid reader, Liam attends weekly book club meetings, and he finishes several novels every month. | |
Which better describes the East Scotia Ridge ecosystem? | [
"It has shallow water. It also has organisms that crawl or stick to the ground.",
"It has no sunlight. It also has organisms that crawl or stick to the ground."
] | 1 | Figure: East Scotia Ridge.
The East Scotia Ridge is a deep sea ecosystem in the southern Atlantic Ocean. | 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 | The deep sea is a type of ecosystem. Deep sea ecosystems have the following features: water at the bottom of the ocean, no sunlight, and organisms that crawl or stick to the ground. So, the East Scotia Ridge has no sunlight. It also has organisms that crawl or stick to the ground. | |
Not supported with pagination yet | Which type of sentence is this?
Justin took several incredible panoramic photographs of the sweeping view from the top of Table Mountain. | [
"compound-complex",
"simple",
"compound",
"complex"
] | 1 | closed choice | grade12 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is simple. It is a single independent clause.
Justin took several incredible panoramic photographs of the sweeping view from the top of Table Mountain. | |
What is the capital of Missouri? | [
"Des Moines",
"Lansing",
"Jefferson City",
"Indianapolis"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | |||
Not supported with pagination yet | What does the euphemism in this text suggest?
Herman is big-boned, so despite being in middle school, he often shops in the men's department. | [
"Herman is overweight.",
"Herman is tall for his age."
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Interpret the figure of speech | 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. | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The euphemism big-boned suggests that Herman is overweight. | |
Which material are these blocks made of? | [
"cotton",
"plastic"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Identify materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials. | Look at the picture of the blocks.
The interlocking blocks are made of plastic.
Plastic is a strong, light material that can be molded into many shapes. Plastic can be made in almost any color. | ||
What can Elise and Terrell trade to each get what they want? | [
"Elise can trade her tomatoes for Terrell's carrots.",
"Terrell can trade his broccoli for Elise's oranges.",
"Elise can trade her tomatoes for Terrell's broccoli.",
"Terrell can trade his almonds for Elise's tomatoes."
] | 2 | 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.
Elise and Terrell open their lunch boxes in the school cafeteria. Neither Elise nor Terrell got everything that they wanted. The ... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Elise wants broccoli. Terrell 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. | ||
Not supported with pagination yet | Which logical fallacy is used in the text?
Sally never lies. She told me herself, so it must be true. | [
"false causation: the assumption that because two things happened together, one caused the other",
"circular reasoning: an argument that supports a claim with the claim itself"
] | 1 | closed choice | grade7 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Sally is telling the truth because she says she never lies. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning. | |
Select the amphibian below. | [
"coral snake",
"red-eyed tree frog"
] | 1 | Amphibians have moist skin and begin their lives in water. An olive toad is an example of an amphibian. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A red-eyed tree frog is an amphibian. It has moist skin and begins its life in water.
A red-eyed tree frog has sticky pads on its toes. The sticky pads help the red-eyed tree frog hold on to leaves.
A coral snake is a reptile. It has scaly, waterproof skin.
Coral snakes spend most of their time underground or hiding un... | |
Select the chemical formula for this molecule. | [
"C2Cl4",
"CCl4",
"CCl",
"C2Cl5"
] | 1 | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Identify chemical formulas for ball-and-stick models | Every substance around you is made up of atoms. Atoms can link together to form molecules. The links between atoms in a molecule are called chemical bonds. Different molecules are made up of different chemical elements, or types of atoms, bonded together.
Scientists use both ball-and-stick models and chemical formulas ... | C is the symbol for carbon. According to the legend, carbon atoms are shown in dark gray. Cl is the symbol for chlorine. According to the legend, chlorine atoms are shown in green. This ball-and-stick model shows a molecule with one carbon atom and four chlorine atoms. The chemical formula will contain the symbols C an... | ||
Select the organism in the same genus as the western crowned pigeon. | [
"Cyanocitta stelleri",
"Goura scheepmakeri",
"Larus livens"
] | 1 | This organism is a western crowned pigeon. Its scientific name is Goura cristata. | 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 western crowned pigeon's scientific name is Goura cristata. The first word of its scientific name is Goura.
Goura scheepmakeri is in the genus Goura. The first word of its scientific name is Goura. So, Goura scheepmakeri and Goura cristata are in the same genus.
Cyanocitta stelleri is in the genus Cyanocitta. The fir... | |
Not supported with pagination yet | According to Newton's third law, what other force must be happening? | [
"The suitcase is pushing on Terrell.",
"The suitcase is pulling on Terrell."
] | 1 | Isaac Newton was born in the 1600s and studied how objects move. He discovered three fundamental laws about forces and motion. According to Newton's third law, for every force, there is an equal and opposite force.
Consider the following force:
Terrell is pulling on a full suitcase. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | Predict forces using Newton's third law | According to Newton's third law, for every force, there is an equal and opposite force. This means that if one object is applying a force on a second object, the second object must also be applying a force on the first object, but in the opposite direction.
For example, if your hand is pushing down on a table, the tabl... | Terrell is pulling on the suitcase. So, Newton's third law tells you that the suitcase is pulling on Terrell. |
Not supported with pagination yet | How long is a bus route across a small town? | [
"3 inches",
"3 yards",
"3 feet",
"3 miles"
] | 3 | Select the best estimate. | closed choice | grade7 | 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 a bus route across a small town is 3 miles.
3 inches, 3 feet, and 3 yards are all too short. |
Not supported with pagination yet | Which statement describes the sled's motion? | [
"The sled has a constant velocity.",
"The sled is accelerating."
] | 1 | A sled is slowing down at the bottom of a snowy hill. | 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 sled is slowing down. So, the sled is accelerating. |
Which term matches the picture? | [
"decomposer",
"detritivore"
] | 0 | Read the text.
When an animal dies, it still has valuable nutrients stored in its body. Helping return these nutrients to the ecosystem are detritivores and decomposers, both of which feed on dead organic matter. Detritivores, such as worms and some millipedes, eat and internally digest small chunks of dead organic mat... | closed choice | grade8 | language science | word-study | Domain-specific vocabulary | Determine the meaning of domain-specific words with pictures | A decomposer feeds on dead organic matter by externally digesting it and then absorbing it. Mold, a type of fungus, is an example of a decomposer. | ||
Not supported with pagination yet | Complete the sentence.
Crushing a mineral into powder is a (). | [
"chemical change",
"physical change"
] | 1 | closed choice | grade5 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form new molecules. The types of molecules in matter before an... | Crushing a mineral into powder is a physical change. The mineral breaks into tiny pieces. But it is still made of the same type of matter. | |
Identify the question that Jaylen's experiment can best answer. | [
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?",
"Does temperature affect how much bacteria can grow in liquid?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Jaylen mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He ... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Complete the statement. Assume that the ball's mass did not change.
The gravitational potential energy stored between the ball and Earth () as the ball rolled along the lane. | [
"decreased",
"increased",
"stayed the same"
] | 2 | Read the text about an object in motion.
Gabrielle went bowling with some friends. She rolled her ball along the flat bowling lane toward the pins. | 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 ball and the center of Earth changed.
Because the bowling lane was flat, each point on the lane was the same distance from the center of Earth. As the ball rolled along the lane, the distance between the ball and the center of Earth stayed the same. So, the gravitational potenti... |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Nicholas's remark about your new car is clearly a case of sour grapes. | [
"British history",
"a fable"
] | 1 | closed choice | grade8 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion sour grapes is a fable.
In the fable "The Fox and the Grapes," a fox tries unsuccessfully to reach a bunch of grapes. Because he cannot reach them and therefore cannot eat them, he tells himself that they must be sour.
The allusion sour grapes means criticizing something because you can't hav... | |
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 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 ... | |
Not supported with pagination yet | Which organizational structure does this text primarily use? | [
"compare-contrast",
"cause-effect"
] | 0 | Read the text.
The males of the Cervidae (deer) family, such as elk, moose, deer, and caribou, grow antlers on their heads. Caribou are the only species in which the females also have antlers. Antlers are branched structures made of bone. Most antlered animals shed them annually in the fall or winter and then grow new ... | closed choice | grade8 | language science | writing-strategies | Text structure | Identify text structures | Authors use different text structures to organize their ideas in writing. Learning to identify these structures will help you to understand the relationships between ideas in informational texts. You can also use these structures to organize your own writing.
A cause-effect structure presents the causes and the effects... | The text uses a compare-contrast structure to show differences between antlers and horns. In the text, certain words and phrases help to organize ideas in a compare-contrast structure. Notice the words unlike and nor. |
Select the reptile below. | [
"western rattlesnake",
"piranha"
] | 0 | Reptiles have scaly, waterproof skin. Most reptiles live on land. A tortoise is an example of a reptile. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A piranha is a fish. It lives underwater. It has fins, not limbs.
A western rattlesnake is a reptile. It has scaly, waterproof skin. | |
Not supported with pagination yet | How long is a guitar? | [
"34 inches",
"34 feet"
] | 0 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that a pencil is 8 long. You might be thinking, 8 what? Is the pencil 8 inches long? 8 feet? 8 miles?
The number 8 on its own does not give you much information about the len... | The better estimate for the length of a guitar is 34 inches.
34 feet is too long. |
Not supported with pagination yet | Which tense does the sentence use?
Molly throws the ball into the hoop. | [
"present tense",
"future tense",
"past tense"
] | 0 | closed choice | grade3 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, throws. The verb ends in -s and tells you about something that is true or happening now. | |
Not supported with pagination yet | Which sentence states a fact? | [
"Polar bears are generally cuter than black bears.",
"Black bears are generally smaller than polar bears."
] | 1 | closed choice | grade5 | language science | writing-strategies | Developing and supporting arguments | Distinguish facts from opinions | A fact is something that can be proved to be true.
The month of July has more days than the month of June.
This is a fact. It can be proved by looking at a calendar and counting the number of days in each month.
An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved true.
July is ... | The second sentence states a fact.
Black bears are generally smaller than polar bears.
It can be proved by comparing the sizes of black bears and polar bears.
The first sentence states an opinion.
Polar bears are generally cuter than black bears.
Cuter shows what a person believes, thinks, or feels. Another person migh... | |
Which of the following could Sandeep's test show? | [
"whether a parachute with a 1 m vent would swing too much at 400 km per hour",
"if the spacecraft was damaged when using a parachute with a 1 m vent going 200 km per hour",
"how steady a parachute with a 1 m vent was at 200 km per hour"
] | 2 | 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... | ||
Not supported with pagination yet | What information supports the conclusion that Tracy inherited this trait? | [
"Tracy's parents have dark skin. They passed down this trait to Tracy.",
"Tracy and her father both have dark hair."
] | 0 | Read the description of a trait.
Tracy has dark skin. | closed choice | grade6 | 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 | The city of Millersburg has been one of the world's biggest makers of cough drops for many years. But last month, Millersburg's cough drop factories were destroyed by floods. What will probably happen to the overall supply of cough drops? | [
"The supply will probably go down.",
"The supply will probably go up."
] | 0 | 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... | Floods destroyed the cough drop factories in Millersburg. The number of producers of cough drops went down. So, the supply of cough drops will probably go down. | |
Not supported with pagination yet | Complete the sentence.
In this case, the program is a () source because it (). | [
"secondary . . . was made in the 2000s by historians researching African American baseball leagues",
"primary . . . was made for fans at an African American league baseball game in the mid-1900s"
] | 1 | Historians use different kinds of sources to study the past. Sources are books, documents, pictures, or other materials that provide evidence about the past. Primary sources are usually firsthand accounts and are usually created at the time that an event takes place. Secondary sources are usually secondhand accounts, a... | closed choice | grade6 | social science | world-history | Social studies skills | Identify primary and secondary sources | To learn about the past, historians look at many different sources. Sources are books, documents, pictures, or other materials that provide evidence about the past.
The sources that historians use fall into two categories: primary sources and secondary sources. The category for a source can change depending on what the... | Keep in mind that you are trying to learn about African American baseball leagues in the mid-1900 s.
In this case, the program is a primary source. It is from the time period and was used by people who participated in the historical event. |
Not supported with pagination yet | Is the following trait inherited or acquired?
Jessica has naturally curly hair. | [
"inherited",
"acquired"
] | 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... | Some humans are born with naturally curly hair. Others are born with naturally straight hair. Curly and straight are examples of hair texture.
Some people decide to change how their hair looks. But this doesn't affect the natural texture of their hair. So, having naturally curly hair is an inherited trait. | |
Which of these states is farthest west? | [
"Rhode Island",
"Illinois",
"Maryland",
"Alabama"
] | 1 | 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. Illinois is farthest west. | ||
Which of the following could Lacey and Kathleen's test show? | [
"if a new batch of concrete was firm enough to use",
"if the concrete from each batch took the same amount of time to dry"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Is native copper a mineral or a rock? | [
"mineral",
"rock"
] | 0 | Native copper has the following properties:
melts at high temperatures
fixed crystal structure
not made by organisms
made of the metal copper
solid
naturally occurring | 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... | Native copper has all the properties of a mineral. So, native copper is a mineral. | |
What is the capital of North Carolina? | [
"Raleigh",
"Charlotte",
"Lincoln",
"Santa Fe"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | |||
Not supported with pagination yet | What information supports the conclusion that Tyler acquired this trait? | [
"Tyler's scar was caused by an accident. He cut his leg when he fell off his skateboard.",
"Tyler's scar is on his left knee. His mother also has a scar on her left knee.",
"Tyler's brother has scars on both of his knees."
] | 0 | Read the description of a trait.
Tyler has a scar on his left knee. | 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.... | |
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 1.",
"The magnitude of the magnetic force is smaller in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade8 | 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... | |
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 0 | Figure: Canary Islands.
Long, wispy clouds typically fill the summer skies each year above the Canary Islands.
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 | grade3 | 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.
Long, wispy clouds typically fill the summer skies each year above the Canary Islands.
This passage tells you about the usual pattern of cloud cover in the Canary Islands. This passage does not describe what the weather is like on a particular day. So, this passage describes the climate. |
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.