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Select the fish below. | [
"painted stork",
"tiger shark"
] | 1 | Fish live underwater. They have fins, not limbs. A goldfish is an example of a fish. | 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 painted stork is a bird. It has feathers, two wings, and a beak.
A tiger shark is a fish. It lives underwater. It has fins, not limbs. | |
Which of the following fossils is older? Select the more likely answer. | [
"feather",
"fern"
] | 0 | This diagram shows fossils in an undisturbed sedimentary rock sequence. | closed choice | grade8 | natural science | earth-science | Fossils | Compare ages of fossils in a rock sequence | A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities.
Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t... | Look again at the fossils in the rock sequence diagram.
Compare the positions of these fossils to determine which one is older:
The feather fossil is in a deeper layer in the rock sequence than the fern fossil. So, the feather fossil is most likely older than the fern fossil. | |
Not supported with pagination yet | Select the temperature shown by this thermometer. | [
"115°F",
"80°F",
"55°F"
] | 1 | closed choice | grade3 | natural science | units-and-measurement | Weather and climate | Read a thermometer | A thermometer is a tool that measures temperature. Temperature can be measured in degrees. The symbol for degrees is °.
Some thermometers measure temperature in degrees Fahrenheit (°F). Fahrenheit is one scale used to measure temperature.
This is a tube thermometer. It has a tube filled with a red liquid.
There is a Fa... | Find the top of the red liquid.
Now look at the scale to the right. The top of the red liquid lines up with 80. So, the temperature is 80°F. | |
Which property matches this object? | [
"rough",
"soft"
] | 1 | Select the better answer. | closed choice | grade2 | 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. | Look at the object.
Think about each property.
A soft object changes shape when you squeeze it. The flower petals are soft.
A rough object feels scratchy when you touch it. The flower petals are not rough. | |
Not supported with pagination yet | Compare the motion of three blue jays. Which blue jay was moving at the highest speed? | [
"a blue jay that moved 385kilometers south in 10hours",
"a blue jay that moved 310kilometers south in 10hours",
"a blue jay that moved 320kilometers north in 10hours"
] | 0 | 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 blue jay moved and the time it took to move that distance. The direction each blue jay moved does not affect its speed.
Notice that each blue jay moved for 10 hours. The blue jay that moved 385 kilometers moved the farthest distance in that time. So, that blue jay must have moved at the highes... | |
Not supported with pagination yet | Select the liquid. | [
"chalk",
"water in a sink",
"flower petals",
"stuffed rabbit"
] | 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... | A flower petal is a solid. A solid has a size and shape of its own. When a butterfly lands on a flower petal, the petal may bend. But the petal will still have its own shape.
Chalk is a solid. You can easily break chalk into pieces. But each piece will still have a size and shape of its own.
A stuffed rabbit is a solid... | |
Which ocean is highlighted? | [
"the Southern Ocean",
"the Atlantic Ocean",
"the Arctic Ocean",
"the Pacific Ocean"
] | 1 | closed choice | grade8 | 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 Atlantic Ocean. | ||
Does this passage describe the weather or the climate? | [
"climate",
"weather"
] | 1 | Figure: Granada Province.
Granada Province is in southern Spain. A farmer there noticed that large gray clouds covered the mountains every day last week.
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade6 | natural science | earth-science | Weather and climate | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Granada Province is in southern Spain. A farmer there noticed that large gray clouds covered the mountains every day last week.
The underlined part of the passage tells you about the clouds seen last week in Granada Province. This passage describes the atmosphere at a certain place and time.... | |
Not supported with pagination yet | Complete the sentence.
Building a tower out of magnetic blocks 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... | Building a tower out of magnetic blocks is a physical change. The blocks stick to each other to form a tower. But the blocks are still made of the same type of matter as before. | |
Which animal's neck is also adapted for reaching high branches? | [
"dromedary camel",
"warthog"
] | 0 | Giraffes eat leaves and twigs. The 's neck is adapted for reaching branches that are high above the ground.
Figure: giraffe. | 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 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 giraffe.
Now look at each animal. Figure out which animal has a similar adaptation.
The dromedary camel has a long neck. Its neck is adapted for reaching high branches.
The warthog has a short neck. Its neck is not adapted for reaching high branches. The warthog eats grasses, roots, and bulbs... | |
Not supported with pagination yet | Which is a compound sentence? | [
"Robert practiced pitching the ball, so he became even better.",
"The jewels on your necklace sparkle in this light."
] | 0 | closed choice | grade3 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple or compound? | A simple sentence is a sentence with only one subject and predicate.
The pitcher threw the ball to first base.
A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so.
The pitcher threw the ball, and the batter hit it.
Some simple sentences have a compound subject or ... | The first sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction so.
Robert practiced pitching the ball, so he became even better. | |
Which animal's limbs are also adapted for swimming? | [
"humpback whale",
"giraffe"
] | 0 | s live along the west coast of North America. They spend a lot of time hunting fish at sea.
The has four flippers for limbs. Its limbs are adapted for swimming.
Figure: California sea lion. | 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.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the California sea lion.
The California sea lion uses its flippers to push itself through water. The flippers can also help it change direction while swimming.
Now look at each animal. Figure out which animal has a similar adaptation.
The humpback whale has flippers. Its limbs are adapted for swi... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
For several years, Dora Maar was Pablo Picasso's muse. | [
"a fairy tale",
"Greek mythology"
] | 1 | closed choice | grade9 | 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 muse is Greek mythology.
In Greek mythology, the muses are nine sister goddesses who embody and inspire song, poetry, art, and science.
The allusion muse means a source of artistic motivation. | |
Which property do these two objects have in common? | [
"sticky",
"colorful"
] | 1 | Select the better answer. | closed choice | grade2 | 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.
Different objects can have the same properties. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A colorful object has one or more bright colors. Both objects are colorful.
A sticky object can stick to other things. Neither of the objects are sticky.
The property that both objects have in common is colorful. | |
Not supported with pagination yet | The trucks begin to move at the same speed. Which truck needs a larger force to start moving? | [
"a mail truck carrying 450 pounds of mail",
"a mail truck carrying 550 pounds of mail"
] | 1 | Two mail trucks are loaded with mail. The trucks are the same. But they are carrying different amounts of mail. | closed choice | grade2 | natural science | physics | Force and motion | How do mass and force affect motion? | A force is a push or a pull.
A force can make an object start moving or stop an object that is moving. A force can also make an object speed up, slow down, or change direction.
Forces can be different sizes.
Think about trying to move a heavy object and a light object. Imagine you want to move them at the same speed. Y... | Look for the mail truck that is heavier.
A mail truck carrying 550 pounds of mail is heavier than a mail truck carrying 450 pounds of mail. So, the mail truck carrying 550 pounds needs a larger force to start moving at the same speed as the other mail truck. |
Not supported with pagination yet | Compare the motion of three cars. Which car was moving at the lowest speed? | [
"a car that moved 220miles south in 5hours",
"a car that moved 195miles east in 5hours",
"a car that moved 210miles 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 mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects moving f... | Look at the distance each car moved and the time it took to move that distance. The direction each car moved does not affect its speed.
Notice that each car moved for 5 hours. The car that moved 195 miles moved the shortest distance in that time. So, that car must have moved at the lowest speed. | |
What is the capital of Delaware? | [
"Cheyenne",
"Austin",
"Dover",
"Georgetown"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Dover is the capital of Delaware. | |||
Not supported with pagination yet | Select the solid. | [
"water in a fishbowl",
"coffee",
"air inside a balloon",
"crayons"
] | 3 | 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... | The air inside a balloon is a gas. A gas expands to fill a space. The air inside a balloon expands to fill all the space in the balloon. If the balloon pops, the air will expand to fill a much larger space.
Coffee is a liquid. A liquid takes the shape of any container it is in. If you pour coffee into a different conta... | |
Which country is highlighted? | [
"Tonga",
"the Marshall Islands",
"Fiji",
"Tuvalu"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
After spending weeks in New York City, Clara was a bit unnerved by the deafening silence of her small hometown. | [
"oxymoron",
"euphemism"
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses an oxymoron, a joining of two seemingly contradictory terms.
Deafening silence is a contradiction, because deafening describes something extremely loud, and silence is the absence of sound. | |
What label shows the territory of Macedonia? | [
"D",
"B",
"A",
"C"
] | 3 | Throughout the following questions, you will learn about a man who became known as Alexander the Great. Alexander the Great created the Macedonian Empire in the late 300s BCE.
Before it was an empire, Macedonia was a kingdom in southern Europe. Macedonia bordered ancient Greece and was located along the Aegean (ah-GEE-... | closed choice | grade6 | social science | world-history | Greece | Alexander the Great | Look at the map. Macedonia is labeled.
The map shows that Macedonia bordered Greece in southern Europe. Macedonia was also located along the coast of the Aegean Sea. | ||
Not supported with pagination yet | Which figure of speech is used in this text?
Maya gazed at the ancient pug that seemed to sleep all day and noted, "You're an energetic puppy!" | [
"verbal irony",
"pun"
] | 0 | closed choice | grade7 | 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.
An energetic puppy shows verbal irony because an old, exhausted dog is far from an energetic puppy. | |
Not supported with pagination yet | Which type of sentence is this?
Annie is a competitive horseback rider, and she will be competing in the next World Equestrian Games, which are held every four years. | [
"compound-complex",
"complex",
"simple",
"compound"
] | 0 | closed choice | grade10 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is compound-complex. It is made up of two independent clauses and a dependent clause. The dependent clause begins with the relative pronoun which.
Annie is a competitive horseback rider, and she will be competing in the next World Equestrian Games, which are held every four years. | |
Not supported with pagination yet | Would you find the word beginner on a dictionary page with the following guide words?
bade - butterfly | [
"yes",
"no"
] | 0 | yes or no | grade6 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since beginner is between the guide words bade - butterfly, it would be found on that page. | |
Not supported with pagination yet | Last year, 50,000 people lived in the city of Norwood. But since then, 8,000 people have moved away. What probably happened to the overall supply of houses for sale in Norwood? | [
"The supply probably went down.",
"The supply probably went up."
] | 1 | closed choice | grade7 | social science | economics | Supply and demand | Understand overall supply and demand | Overall supply is the total amount of a good or service that producers make and sell. There are several things that can make overall supply go up or down. The table below shows how changes to these things might affect overall supply.
| Resources | Number of producers or suppliers | Expected change in demand
Supply goe... | The population of Norwood fell by 8,000 people. Many of the people who have left are probably trying to sell their houses. Since more people are trying to sell their houses, the number of suppliers of houses for sale in Norwood has gone up. So, the supply of houses for sale probably went up, too. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
After a long second half full of sound and fury, the soccer game concluded in a tie. | [
"Shakespeare",
"French history"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Gree... | The source of the allusion sound and fury is Shakespeare.
In Shakespeare's Macbeth, when Macbeth learns that his wife has died, he laments in his grief that life is nothing more than a "meaningless tale told by an idiot, full of sound and fury."
The allusion sound and fury means activity that amounts to nothing. | |
Not supported with pagination yet | Which figure of speech is used in this text?
Ronald remarked that the new book on anti-gravity was impossible to put down. | [
"pun",
"alliteration"
] | 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 a pun, a word or phrase that humorously suggests more than one meaning.
Impossible to put down means that the book is so good that it is hard to stop reading. The phrase impossible to put down is also a joke about anti-gravity: if gravity pulls things down, perhaps anti-gravity does the opposite and makes... | |
Not supported with pagination yet | Based on this information, what is this tomato plant's phenotype for the fruit texture trait? | [
"FF",
"smooth fruit"
] | 1 | In a group of tomato plants, some individuals have smooth fruit and others have fuzzy fruit. In this group, the gene for the fruit texture trait has two alleles. The allele F is for smooth fruit, and the allele f is for fuzzy fruit.
A certain tomato plant from this group has smooth fruit. This plant has two alleles for... | closed choice | grade6 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. The tomato plant's observable version of the fruit texture trait is smooth fruit. So, the plant's phenotype for the fruit texture trait is smooth fruit. |
Not supported with pagination yet | Select the plant. | [
"Sheep eat plants.",
"Grape vines have wide flat leaves."
] | 1 | closed choice | grade2 | natural science | biology | Classification | Identify plants and animals | Plants and animals are living things. Living things are called organisms.
Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can.
Animals also come in many shapes and sizes. Most animals can move around. A... | A grape vine is a plant. It has wide flat leaves.
People first grew grapes for food over 8,000 years ago.
A sheep is an animal. It eats plants.
People raise sheep for their fur, meat, and milk. | |
Which animal's mouth is also adapted to eat plant matter? | [
"orca",
"zebra"
] | 1 | Blackbucks are herbivores, or plant eaters. They eat mostly grass. The 's mouth is adapted to grind up and eat plant matter.
Figure: blackbuck. | 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 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 blackbuck.
The blackbuck has long jaws and flat teeth. Its mouth is adapted to eat plant matter. The long jaws can help the blackbuck reach grass. The flat teeth can help it cut and grind up the food into soft pieces it can swallow.
Now look at each animal. Figure out which animal has a simil... | |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | 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 south pole of one magnet is closest to the south pole of the other magnet. Poles that are the same repel. So, these magnets will repel each other. | |
Which property do these three objects have in common? | [
"sour",
"hard",
"translucent"
] | 2 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A translucent object lets light through. But you cannot see clearly through a translucent object. All three objects are translucent.
A lemon has a sour taste. The ocean water and the honey are not sour.
A hard object does not change shape when presse... | |
Which country is highlighted? | [
"Trinidad and Tobago",
"Grenada",
"Saint Kitts and Nevis",
"Saint Vincent and the Grenadines"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Grenada. | |||
Not supported with pagination yet | Suppose Brendan decides to plant the magnolia tree. Which result would be a cost? | [
"The magnolia tree will use up more space than the lilies would have used up.",
"Brendan will get to look at the magnolia tree. He thinks it will look more beautiful than the lilies would have looked."
] | 0 | Brendan is deciding whether to plant lilies or a magnolia tree in his backyard. He wants to make his backyard more beautiful. But he also wants to leave space for doing fun things. | closed choice | grade5 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Brendan wants or needs:
The magnolia tree will use up more space than the lilies would have used up. |
Not supported with pagination yet | Which figure of speech is used in this text?
When Melissa first joined the track team, she was afraid of jumping, but she got over that hurdle. | [
"pun",
"allusion"
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses a pun, a word or phrase that humorously suggests more than one meaning.
Hurdle refers to an obstacle that one must overcome. It also refers to an object that a runner jumps over. | |
Not supported with pagination yet | Which change better matches the sentence?
Melted rock comes out of the ground. | [
"volcanic eruption",
"erosion"
] | 0 | closed choice | grade2 | natural science | earth-science | Earth events | Classify changes to Earth's surface | |||
Not supported with pagination yet | Complete the sentence so that it uses personification.
The giant boulder () budge, no matter how hard we pushed. | [
"would not",
"refused to"
] | 1 | closed choice | grade8 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the phrase refused to. It describes the boulder as if it were a stubborn person. | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
Slowly, a renewed sense of dread () her mind. | [
"invaded",
"filled"
] | 0 | 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 word invaded. It describes dread as if it were a person who is barging in or taking over. | |
Select the amphibian below. | [
"arroyo toad",
"clownfish",
"blue-footed booby",
"sea otter"
] | 0 | Amphibians have moist skin and begin their lives in water.
Amphibians are cold-blooded. The body temperature of cold-blooded animals depends on their environment.
A red-spotted newt is an example of an amphibian. | closed choice | grade4 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. Scientists sort animals into each group based on traits they have in common. This process is called classification.
Classification helps scientists learn about how animals live. Classification also helps scientists compare similar animals. | A blue-footed booby is a bird. It has feathers, two wings, and a beak.
Blue-footed boobies live on tropical islands in the Pacific Ocean.
A sea otter is a mammal. It has fur and feeds its young milk.
Sea otters have very thick fur. Their fur keeps them warm in cold water.
An arroyo toad is an amphibian. It has moist sk... | |
Which country is highlighted? | [
"the Marshall Islands",
"Solomon Islands",
"Nauru",
"Palau"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Marshall Islands.
Does the Marshall Islands have any territorial disputes?
The Marshall Islands claims to own Wake Island, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States claimed Wake Island in 1899 and has... | |||
Not supported with pagination yet | Using only these supplies, which question can Ellen investigate with an experiment? | [
"When placed in the sun, does a glass jar wrapped in cotton heat up more than a glass jar wrapped in wool?",
"When wrapped in a cotton shirt and placed in the sun, does a large jar or a small jar heat up more?",
"When placed in the sun, does a glass jar wrapped in a black cotton shirt heat up more than a glass ... | 2 | Ellen is outside with her friend on a sunny day. Ellen is wearing a light-colored shirt, and she notices that she feels colder than her friend, who is wearing a dark shirt. She wonders what factors affect how fabric warms an object. So, she decides to design an experiment. She has the following supplies available:
a bl... | closed choice | grade6 | 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... | |
Which of the following could Keith's test show? | [
"the amount of sunlight the roof would get throughout the year",
"how many solar panels could fit on each side of the roof",
"which side of the roof got more sun over one day"
] | 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 | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Which material is these shoes made of? | [
"leather",
"ceramic"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Identify multiple materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood. | Look at the picture of the shoes.
The shoes are made of two different materials. The tops are made of leather, and the soles are made of rubber. | ||
Which of the following could Terrence's test show? | [
"if at least 20% of the park would be shaded by trees in each design",
"which design would have the greatest distance between the concert area and the road",
"which design would have the least traffic noise in the concert area"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Which specific humidity level was measured within the outlined area shown? | [
"10 grams of water vapor per kilogram of air",
"13 grams of water vapor per kilogram of air",
"20 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.
20 grams of water vapor per kilogram... | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Martha can ride a bicycle. | [
"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 ride a bicycle. Instead, many people learn how to ride. So, riding a bicycle is an acquired trait. | |
Which country is highlighted? | [
"Tonga",
"Tuvalu",
"Samoa",
"Fiji"
] | 0 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tonga. | |||
Not supported with pagination yet | What information supports the conclusion that Grayson inherited this trait? | [
"Grayson and his siblings all have naturally straight hair.",
"Grayson and his biological father have short hair.",
"Grayson's biological mother often wears her naturally brown hair in a bun."
] | 2 | Read the description of a trait.
Grayson has naturally brown hair. | closed choice | grade7 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Alec's Falstaffian nature makes him stand out at a party. | [
"Shakespeare",
"Greek mythology"
] | 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 Falstaffian is Shakespeare.
Sir John Falstaff, a comical character in several of William Shakespeare's plays, is known for his cheerful sociability and sometimes off-color humor.
The allusion Falstaffian means characterized by joviality and enjoyment of food and drink. | |
Which of the following organisms is the decomposer in this food web? | [
"bilberry",
"Arctic fox",
"earthworm"
] | 2 | Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
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 I | 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... | Decomposers help break down dead organisms into simpler matter, such as nutrients. These nutrients can then help plants and other organisms grow. In a food web, there is an arrow pointing from another organism to a decomposer. There are no arrows pointing from a decomposer to another organism.
The earthworm does not ha... | |
Select the chemical formula for this molecule. | [
"C2I4",
"CI4",
"C4I",
"CI"
] | 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. I is the symbol for iodine. According to the legend, iodine atoms are shown in dark purple. This ball-and-stick model shows a molecule with one carbon atom and four iodine atoms. The chemical formula will contain the symbols C and... | ||
Not supported with pagination yet | How long does it take to make a paper airplane? | [
"40 minutes",
"40 seconds"
] | 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 make a paper airplane is 40 seconds.
40 minutes is too slow. |
Not supported with pagination yet | How long does it take to blow your nose? | [
"4 seconds",
"4 hours"
] | 0 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose units of time | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to blow your nose is 4 seconds.
4 hours is too slow. |
In this experiment, which were part of an experimental group? | [
"the sections of wall scrubbed with water only",
"the sections of wall scrubbed with water and baking soda"
] | 1 | The passage below describes an experiment.
Vincent's young son drew all over the living room wall with crayons! Vincent wanted to find a way to remove the crayon markings. Based on what he read online, he decided to see if scrubbing a wall with baking soda could help remove crayon.
Vincent dipped a sponge in water and... | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify control and experimental groups | Experiments have variables, or parts that change. You can design an experiment to investigate whether changing a variable between different groups has a specific outcome.
For example, imagine you want to find out whether adding fertilizer to soil affects the height of pea plants. You could investigate this question wit... | In this experiment, Vincent investigated whether baking soda can remove crayon from a wall. So, the sections of wall scrubbed with water and baking soda were part of an experimental group.
The sections of wall scrubbed with water only did not get baking soda. So, they were not part of an experimental group. | |
Which of the following could Susan's test show? | [
"whether she added enough nutrients to help the bacteria produce 20% more insulin",
"whether producing more insulin would help the bacteria grow faster",
"whether different types of bacteria would need different nutrients to produce insulin"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Which continent is highlighted? | [
"Antarctica",
"Asia",
"South America",
"Africa"
] | 3 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Africa. | ||
Not supported with pagination yet | Select the vertebrate. | [
"rock lobster",
"earthworm",
"yellow jacket",
"gray crowned crane"
] | 3 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade5 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A yellow jacket is an insect. Like other insects, a yellow jacket 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 earthworm is a worm. Like other worm... |
Which trait did Coelodonta have? Select the trait you can observe on the fossil. | [
"a black snout",
"horns on its snout"
] | 1 | This picture shows a fossil of an ancient animal called Coelodonta.
Coelodonta was hunted by early humans and went extinct about 10,000 years ago. | 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 | Complete the statement.
Ruthenium is (). | [
"a compound",
"an elementary substance"
] | 1 | Ruthenium is a metal that is often used in the tips of fountain pens. The chemical formula for ruthenium is Ru. | 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 ruthenium 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 ruthenium contains one atomic symbol: Ru... |
Not supported with pagination yet | Which type of sentence is this?
An avid reader, Garrett attends weekly book club meetings, and he finishes several novels every month. | [
"compound",
"compound-complex",
"complex",
"simple"
] | 0 | closed choice | grade7 | 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, Garrett attends weekly book club meetings, and he finishes several novels every month. | |
Which trait did this aurochs have? Select the trait you can observe on the fossil. | [
"a striped body",
"a mouth"
] | 1 | This picture shows a fossil of an animal called an aurochs.
The aurochs was hunted by humans and went extinct around 1627. The oldest aurochs fossils are about 2,000,000 years old. | 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 | What do these two changes have in common?
butter melting on a hot day
burning a marshmallow over a campfire | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 1 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Butter melting on a hot day is a change of state. So, it is a physical change. The butter changes from solid to liquid, but it is still made of the same type of matter.
Burning a marshmallow is a chemical change. The heat from the fire causes the type of matter in the marshmallow to cha... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Don't try to tell me that you only watch educational programming, Wanda! I know for a fact that your sister only watches reality television. | [
"circular reasoning: an argument that supports a claim with the claim itself",
"guilt by association: a negative association intended to discredit someone or something"
] | 1 | 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 Wanda must watch reality television, because her sister watches reality television. However, even though Wanda's sister watches reality television, that doesn't necessarily mean that Wanda does, too. This illustrates a type of logical fallacy known as guilt by association. | |
Which of the following fossils is younger? Select the more likely answer. | [
"palm leaf",
"wood"
] | 0 | This diagram shows fossils in an undisturbed sedimentary rock sequence. | closed choice | grade8 | natural science | earth-science | Fossils | Compare ages of fossils in a rock sequence | A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities.
Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t... | Look again at the fossils in the rock sequence diagram.
Compare the positions of these fossils to determine which one is younger:
The palm leaf fossil is in a shallower layer in the rock sequence than the wood fossil. So, the palm leaf fossil is most likely younger than the wood fossil. | |
Not supported with pagination yet | Compare the motion of three bicycles. Which bicycle was moving at the highest speed? | [
"a bicycle that moved 75miles south in 10hours",
"a bicycle that moved 145miles east in 10hours",
"a bicycle that moved 95miles south in 10hours"
] | 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 mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects moving f... | Look at the distance each bicycle moved and the time it took to move that distance. The direction each bicycle moved does not affect its speed.
Notice that each bicycle moved for 10 hours. The bicycle that moved 145 miles moved the farthest distance in that time. So, that bicycle must have moved at the highest speed. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
willow - wreath | [
"wedding",
"wobble"
] | 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 wobble is between the guide words willow - wreath, it would be found on that page. | |
What is the name of the colony shown? | [
"New Jersey",
"Maine",
"Illinois",
"North Carolina"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is North Carolina. | |||
Not supported with pagination yet | How long does it take to tie your shoes? | [
"24 hours",
"24 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 24 seconds.
24 hours is too slow. |
Not supported with pagination yet | What information supports the conclusion that Linda acquired this trait? | [
"Linda learned how to build a fire at summer camp.",
"Linda can cook food over a fire."
] | 0 | Read the description of a trait.
Linda knows how to build a fire. | 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.... | |
Which trait did Canis dirus have? Select the trait you can observe on the fossil. | [
"dark-brown fur",
"horns",
"pointed teeth"
] | 2 | This picture shows a fossil of an ancient animal called Canis dirus.
Canis dirus went extinct over 10,000 years ago. Fossils of Canis dirus have been found in North and South America. | 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 correctly shows the title of a play? | [
"\"The Robbers Break In\"",
"***The Robbers Break In***"
] | 1 | closed choice | grade3 | language science | punctuation | Formatting | Formatting titles | The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead.
A Midsummer Night's Dream
The title of a poem, song, or article should be in quotation marks.
"You Are My Sunshine" | A play should be in italics.
The correct title is **The Robbers Break In**. | |
Which part of the kale plant do we usually eat? | [
"the leaves",
"the root",
"the flowers"
] | 0 | People use kale plants for food. Photosynthesis makes food for the plant. We usually eat the part of the plant that does most of the photosynthesis. | closed choice | grade4 | natural science | biology | Plants | Classify fruits and vegetables as plant parts | The fruits and vegetables we eat are parts of plants! Plants are made up of different structures. The different structures carry out important functions.
The roots take in water and nutrients from the soil. They also hold the plant in place in the soil.
The stem supports the plant. It carries food, water, and nutrients... | The part of the kale plant we usually eat is the leaves. They do most of the photosynthesis to make food for the plant. | |
What can Roxanne and Wesley trade to each get what they want? | [
"Roxanne can trade her tomatoes for Wesley's broccoli.",
"Wesley can trade his broccoli for Roxanne's oranges.",
"Wesley can trade his almonds for Roxanne's tomatoes.",
"Roxanne can trade her tomatoes for Wesley's carrots."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Roxanne and Wesley open their lunch boxes in the school cafeteria. Neither Roxanne nor Wesley got everything that they wanted. Th... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Roxanne wants broccoli. Wesley 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 | Using only these supplies, which question can Candice investigate with an experiment? | [
"When placed in the sun, does a glass jar wrapped in cotton heat up more than a glass jar wrapped in wool?",
"When placed in the sun, does a glass jar wrapped in a black cotton shirt heat up more than a glass jar wrapped in a white cotton shirt?",
"When wrapped in a cotton shirt and placed in the sun, does a la... | 1 | Candice is outside with her friend on a sunny day. Candice is wearing a light-colored shirt, and she notices that she feels colder than her friend, who is wearing a dark shirt. She wonders what factors affect how fabric warms an object. So, she decides to design an experiment. She has the following supplies available:
... | closed choice | grade6 | 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... | |
Which of these states is farthest east? | [
"Indiana",
"California",
"Iowa",
"Louisiana"
] | 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. Indiana is farthest east. | ||
Not supported with pagination yet | Which tense does the sentence use?
We blame the blizzard for the traffic. | [
"future tense",
"present tense",
"past tense"
] | 1 | closed choice | grade4 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, blame. The verb tells you about something that is true or happening now. | |
Not supported with pagination yet | What do these two changes have in common?
boiling sugar to make caramel
water boiling on a stove | [
"Both are only physical changes.",
"Both are caused by heating.",
"Both are caused by cooling.",
"Both are chemical changes."
] | 1 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Boiling sugar to make caramel is a chemical change. The heat causes the sugar to change into a different type of matter. Unlike sugar, the new matter is brown and sticky.
Water boiling on the stove is a change of state. So, it is a physical change. The liquid changes into a gas, but a d... | |
Complete the sentence.
The Owen Fracture Zone formed at a () boundary. | [
"divergent",
"convergent",
"transform"
] | 2 | Read the passage and look at the picture.
The Owen Fracture Zone is a fault that lies at a boundary between the Arabian Plate and the Indo-Australian Plate. Although both plates are moving to the northeast, the Arabian Plate is moving slightly faster than the Indo-Australian Plate. The faster-moving Arabian Plate slide... | closed choice | grade8 | natural science | earth-science | Plate tectonics | Describe tectonic plate boundaries around the world | The outer layer of Earth is broken up into many pieces called tectonic plates, or simply plates. The breaks between plates are called plate boundaries. Plate boundaries are classified by the way the plates are moving relative to each other:
At a convergent boundary, two plates are moving toward each other.
At a diverge... | To figure out what type of plate boundary formed the Owen Fracture Zone, you need to know how the tectonic plates interacted. To find this out, read the passage carefully.
The Owen Fracture Zone is a fault that lies at a boundary between the Arabian Plate and the Indo-Australian Plate. Although both plates are moving t... | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"The Chens' car has a dent in the bumper, but otherwise their car looks just like the Duncans'.",
"The Chens' car looks just like the Duncans', but theirs has a dent in the bumper."
] | 1 | closed choice | grade7 | language science | writing-strategies | Pronouns and antecedents | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun theirs could refer to the Chens' or the Duncans'.
The Chens' car looks just like the Duncans', but theirs has a dent in the bumper.
The second answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so... | |
Which of these cities is marked on the map? | [
"Chicago",
"New York City",
"San Antonio",
"Atlanta"
] | 0 | closed choice | grade5 | social science | geography | Cities | Major U.S. cities | The city is Chicago, Illinois. Atlanta, New York City, and San Antonio are marked with gray circles on the map below. | |||
Select the organism in the same species as the domestic cat. | [
"Neofelis nebulosa",
"Lynx lynx",
"Felis catus"
] | 2 | This organism is a domestic cat. Its scientific name is Felis catus. | 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 domestic cat's scientific name is Felis catus.
Lynx lynx does not have the same scientific name as a domestic cat. So, Felis catus and Lynx lynx are not in the same species.
Neofelis nebulosa does not have the same scientific name as a domestic cat. So, Felis catus and Neofelis nebulosa are not in the same species.
F... | |
Not supported with pagination yet | What information supports the conclusion that Haley acquired this trait? | [
"Haley's friends like to make chili with her.",
"Haley learned how to make chili from a recipe book.",
"When Haley was young, her grandmother taught her how to cut chili peppers."
] | 1 | Read the description of a trait.
Haley knows how to make chili. | 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 | What is the source of the allusion in the sentence below?
The economist had been quietly publishing articles about the future of the housing market like a dutiful Cassandra. | [
"Greek mythology",
"a poem"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Gree... | The source of the allusion Cassandra is Greek mythology.
In Greek mythology, Cassandra is blessed with the power of prophecy; however, she is unable to convince others of her dire predictions due to a curse from the god Apollo.
The allusion Cassandra means a person who makes unheeded predictions of disaster. | |
According to the text, what evidence of a volcanic eruption did the captain observe? | [
"He heard a report on the radio warning about a volcanic eruption.",
"He saw pieces of molten rock shooting out of the water.",
"He knew his crew had finished putting their fishing lines in the ocean."
] | 1 | Before sunrise on November 14, 1963, the crew of the fishing boat Isleifur II had just finished putting their lines in the ocean off the southern coast of Iceland. As the crew waited to have breakfast, a strong smell of sulfur drifted over the boat. At first, crew members thought that the cook had burned the eggs or th... | closed choice | grade8 | natural science | literacy-in-science | Ecological interactions | Investigate primary succession on a volcanic island | |||
Not supported with pagination yet | What does this Works Cited entry indicate about the cited work?
Blake, William. The Complete Poetry and Prose of William Blake. Ed. David V. Erdman. New York: Anchor, 1988. Print. | [
"It is a book.",
"It is a short story.",
"It is a poem."
] | 0 | closed choice | grade11 | language science | reference-skills | Research skills | Understand a Works Cited entry (MLA 7th edition) | When writing research papers, you will often be asked to follow a particular style guide for your citations. One popular style guide is the Modern Language Association (MLA) Handbook.
Below are the basic formats for some common types of Works Cited entries. Consult the MLA Handbook for a complete list.
Books:
Format | ... | Look closely at the Works Cited entry:
Blake, William. The Complete Poetry and Prose of William Blake. Ed. David V. Erdman. New York: Anchor, 1988. Print.
You can tell that the cited work is a book because of the entry's formatting. Book entries always include the book title in italics followed by the place of publicat... | |
Not supported with pagination yet | How long does it take to see all the animals at the zoo? | [
"3 minutes",
"3 hours"
] | 1 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose units of time | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the... | The better estimate for how long it takes to see all the animals at the zoo is 3 hours.
3 minutes is too fast. |
Which country is highlighted? | [
"Cuba",
"The Bahamas",
"Barbados",
"Dominica"
] | 0 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Cuba.
Does Cuba have any territorial disputes?
Cuba claims to own Guantanamo Bay Naval Base, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them.
The United States controls the area and uses it as a military base and prison. A treaty... | |||
Which material is this window made of? | [
"cotton",
"wood"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Identify multiple materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood. | Look at the picture of the window.
The window is made of two different materials. The window panes are made of glass. The rest of the window is made of wood. | ||
Not supported with pagination yet | Based on this information, what is Fido's phenotype for the fur length trait? | [
"ff",
"long fur"
] | 1 | In a group of dogs, some individuals have short fur and others have long fur. In this group, the gene for the fur length trait has two alleles. The allele F is for short fur, and the allele f is for long fur.
Fido, a dog from this group, has long fur. Fido has two alleles for long fur. | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. Fido's observable version of the fur length trait is long fur. So, Fido's phenotype for the fur length trait is long fur. |
Not supported with pagination yet | Which stick of butter has less thermal energy? | [
"the colder stick of butter",
"the hotter stick of butter"
] | 0 | Two sticks of butter are identical except for their temperatures. | closed choice | grade5 | natural science | physics | Heat and thermal energy | How are temperature and mass related to thermal energy? | Matter is made of tiny particles called atoms. Atoms are always moving.
The energy of moving atoms is called thermal energy. The total amount of thermal energy in matter depends on three things: the type of matter, the amount of matter, and how fast the atoms are moving.
Temperature measures how hot or cold matter is. ... | The two sticks of butter are made of the same material and have the same mass. So, the colder stick of butter has less thermal energy. |
What type of rock is quartzite? | [
"sedimentary",
"metamorphic"
] | 1 | Quartzite is a type of rock. It forms when sandstone is changed by heating and squeezing. Quartzite is used to make floors, roofs, and kitchen counters. | closed choice | grade3 | natural science | earth-science | Rocks and minerals | Classify rocks as igneous, sedimentary, or metamorphic | Igneous rock is formed when melted rock cools and hardens into solid rock. This type of change can occur at Earth's surface or below it.
Sedimentary rock is formed when layers of sediment are pressed together to make rock. This type of change occurs below Earth's surface.
Metamorphic rock is formed when a rock is chang... | Quartzite is a metamorphic rock. Like other metamorphic rocks, it forms when a rock is changed by heating and squeezing.
The center of our planet is very hot. Deep below Earth's surface, rocks can be heated to high temperatures. The rocks can also be squeezed by the weight of rocks around them. Sometimes, the heating a... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
"Michael's personality is very Jekyll and Hyde," Carrie told her brother. | [
"U.S. history",
"literature"
] | 1 | closed choice | grade9 | 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... | |
Select the reptile below. | [
"green tree frog",
"tortoise"
] | 1 | Reptiles have scaly, waterproof skin. Most reptiles live on land. An American alligator is an example of a reptile. | 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 tortoise is a reptile. It has scaly, waterproof skin.
A tortoise's shell protects it from predators. When a tortoise feels threatened, it can pull its head and legs inside its shell.
A green tree frog is an amphibian. It has moist skin and begins its life in water.
There are many kinds of tree frogs. Most tree frogs ... | |
What is the name of the colony shown? | [
"Rhode Island",
"Georgia",
"New York",
"South Carolina"
] | 0 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Rhode Island. | |||
Which of the following could Lila's test show? | [
"if the new turbine could turn easily",
"whether the new turbine could produce 10% more electricity",
"how much the new turbine would weigh"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | What do these two changes have in common?
a log decomposing in the woods
an old sandwich rotting in a trashcan | [
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes.",
"Both are caused by cooling."
] | 2 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
The breakdown of plant and animal matter by organisms such as fungi and earthworms is called decomposition. A log decomposing in the woods is a chemical change.
As the log breaks down, the type of matter in it changes. Over time, the log becomes softer and has a different smell.
A sandw... | |
Not supported with pagination yet | How long is a parking space? | [
"22 feet",
"22 yards",
"22 miles",
"22 inches"
] | 0 | 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 a parking space is 22 feet.
22 inches is too short. 22 yards and 22 miles are too long. |
Not supported with pagination yet | Which correctly shows the title of a short story? | [
"\"The Story of a Mother\"",
"\"The story of a mother\""
] | 0 | closed choice | grade5 | language science | capitalization | Capitalization | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The words of and a are not important, so they should not be capitalized.
The correct title is "The Story of a Mother." | |
Not supported with pagination yet | Which figure of speech is used in this text?
Jackie insisted that her dog wasn't fat; she said that he was merely well-fed. | [
"euphemism",
"paradox"
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Well-fed is an indirect way of saying overweight. | |
Select the organism in the same genus as the blue jay. | [
"Strix aluco",
"Cyanocitta stelleri",
"Larus occidentalis"
] | 1 | This organism is a blue jay. Its scientific name is Cyanocitta 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 blue jay's scientific name is Cyanocitta cristata. The first word of its scientific name is Cyanocitta.
Strix aluco is in the genus Strix. The first word of its scientific name is Strix. So, Strix aluco and Cyanocitta cristata are not in the same genus.
Larus occidentalis is in the genus Larus. The first word of its ... |
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.