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Not supported with pagination yet | What does the hyperbole in this text suggest?
After he finished the marathon, Gordon collapsed into a chair and declared that he could no longer move a single muscle. | [
"Gordon became paralyzed.",
"Gordon was very tired and sore."
] | 1 | closed choice | grade10 | 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.
Hyperbole is an obvious exaggeration that is not meant to be taken literally.
I ate so much that I think I might explode! | The text uses hyperbole, an obvious exaggeration that is not meant to be taken literally.
The hyperbole could no longer move a single muscle suggests that Gordon was very tired and sore. His muscles were not literally incapable of moving. | |
Which property do these three objects have in common? | [
"scratchy",
"flexible",
"yellow"
] | 1 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
Yellow is a color.
This color is yellow. None of the objects are yellow.
A flexible object can be folded or bent without breaking easily. All three objects are flexible.
A scratchy object is rough and itchy against your skin. None of the objects are ... | |
Not supported with pagination yet | Which figure of speech is used in this text?
A Chicago winter separates the men from the boys, especially newcomers from milder climes. The temperature frequently plunges below zero. | [
"verbal irony",
"idiom"
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses an idiom, an expression that cannot be understood literally.
Separates the men from the boys means distinguishes the tough from the not-so-tough. | |
Which of the following organisms is the secondary consumer in this food web? | [
"lichen",
"bilberry",
"short-tailed weasel"
] | 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... | Secondary consumers eat primary consumers, and primary consumers eat producers. So, in a food web, secondary consumers have arrows pointing to them from primary consumers. Primary consumers have arrows pointing to them from producers.
The short-tailed weasel has an arrow pointing to it from the brown lemming. The brown... | |
Which of these oceans does the prime meridian intersect? | [
"the Arctic Ocean",
"the Indian Ocean",
"the Pacific Ocean"
] | 0 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Arctic Ocean. It does not intersect the Indian Ocean or the Pacific Ocean. | ||
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Not supported with pagination yet | Which figure of speech is used in this text?
We don't mistrust each other because we're armed; we're armed because we mistrust each other.
—President Ronald Reagan, speaking of relations between the U.S. and the Soviet Union | [
"chiasmus",
"understatement"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses chiasmus, an expression in which the second half parallels the first but reverses the order of words.
The second half of the sentence reverses the order of the words mistrust and armed relative to the first half. | |
Not supported with pagination yet | How long is a kitchen table? | [
"8 yards",
"8 miles",
"8 inches",
"8 feet"
] | 3 | 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 kitchen table is 8 feet.
8 inches is too short. 8 yards and 8 miles are too long. |
Which of these states is farthest north? | [
"Kentucky",
"North Carolina",
"Pennsylvania",
"Nevada"
] | 2 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Pennsylvania is farthest north. | ||
Which country is highlighted? | [
"Cuba",
"The Bahamas",
"Barbados",
"Haiti"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is The Bahamas. | |||
What is the name of the colony shown? | [
"Iowa",
"Pennsylvania",
"Virginia",
"Alabama"
] | 1 | closed choice | grade7 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Pennsylvania. | |||
What is the capital of Hawaii? | [
"Salt Lake City",
"Lexington",
"Honolulu",
"Sacramento"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Honolulu is the capital of Hawaii. | |||
Not supported with pagination yet | How long is a basketball court? | [
"25 feet",
"25 inches",
"25 yards",
"25 miles"
] | 2 | Select the best estimate. | closed choice | grade6 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of a basketball court is 25 yards.
25 inches and 25 feet are too short. 25 miles is too long. |
Which statement describes the Tibetan Plateau ecosystem? | [
"It has long, cold winters and short, cold summers.",
"It has warm summers and cool winters.",
"It has many evergreen trees."
] | 0 | Figure: Tibetan Plateau.
The Tibetan Plateau is a tundra ecosystem located in Tibet, western China, and northern India. The plateau is over 14,800 feet high and is surrounded by many mountain ranges. | closed choice | grade6 | natural science | biology | Ecosystems | Describe ecosystems | An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment.
There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri... | A tundra is a type of ecosystem. Tundras have the following features: long, cold winters and short, cold summers, soil that is frozen year-round, and mostly small plants. So, the following statement describes the Tibetan Plateau ecosystem: long, cold winters and short, cold summers, soil that is frozen year-round, and ... | |
Which trait did Curculioides adompha have? Select the trait you can observe on the fossil. | [
"thin legs",
"red eyes"
] | 0 | This picture shows a fossil of an animal called Curculioides adompha. This fossil is more than 300,000,000 years old. | closed choice | grade4 | 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 of the following could Dave's test show? | [
"how well the weather station would work when it was windy",
"if the weather station would work when the temperature was 50°C"
] | 1 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
What can happen to a fertilized egg? | [
"It can turn into a spore.",
"It can grow into a thin brown stalk."
] | 1 | This diagram shows the life cycle of a moss. | closed choice | grade7 | natural science | biology | Plant reproduction | Moss and fern life cycles | Moss plants reproduce using both asexual reproduction and sexual reproduction.
Moss plants use their male and female parts for sexual reproduction. The male parts produce sperm. Moss live in damp environments, and moss sperm can travel through water to the female parts.
The sperm fuse with eggs in the female part. This... | A fertilized egg can grow into a thin brown stalk on top of the female part.
The thin brown stalk may make spores, but the sperm and egg do not turn into spores. | |
What is the capital of Washington? | [
"New York City",
"Seattle",
"Spokane",
"Olympia"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | |||
What is the capital of Missouri? | [
"Madison",
"Jefferson City",
"Pierre",
"New Haven"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | |||
Which solution has a higher concentration of blue particles? | [
"Solution B",
"neither; their concentrations are the same",
"Solution A"
] | 2 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | grade8 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... | |
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.",
"Madison Chock and Gracie Gold were two American figure skaters in the Sochi 2014 Olympics."
] | 1 | closed choice | grade5 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple, compound, or complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
aft... | The first sentence is the simple sentence. It is a single independent clause.
Madison Chock and Gracie Gold were two American figure skaters in the Sochi 2014 Olympics. | |
Not supported with pagination yet | Complete the sentence.
Mixing carbon and iron to make steel is a (). | [
"physical change",
"chemical change"
] | 0 | 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... | Mixing carbon and iron to make steel is a physical change. To make steel, a furnace melts the carbon and iron so that they can be mixed easily.
Solid steel forms when the mixture cools. The carbon and iron are now combined as steel. But they are still made of the same types of matter as before. | |
Which country is highlighted? | [
"the Marshall Islands",
"Australia",
"Solomon Islands",
"Vanuatu"
] | 2 | closed choice | grade6 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Solomon Islands. | |||
Not supported with pagination yet | Does this passage describe the weather or the climate?
It is snowing in Tanvi's town today. | [
"weather",
"climate"
] | 0 | closed choice | grade5 | natural science | earth-science | Weather and climate | What's the difference between weather and climate? | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the text carefully.
It is snowing in Tanvi's town today.
This passage tells you about the precipitation today in Tanvi's town. It describes the atmosphere at a certain place and time. So, this passage describes the weather. | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"sincerely,\nDevin",
"Sincerely,\nDevin"
] | 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 first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
What can Mandy and Julian trade to each get what they want? | [
"Mandy can trade her tomatoes for Julian's sandwich.",
"Julian can trade his broccoli for Mandy's oranges.",
"Mandy can trade her tomatoes for Julian's broccoli.",
"Julian can trade his almonds for Mandy'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.
Mandy and Julian open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Mandy wanted b... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Mandy wanted broccoli in her lunch and Julian was hoping for tomatoes. Look at the labeled part of the images.
Mandy has tomatoes. Julian has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want. | ||
Not supported with pagination yet | What is the volume of a coffee pot? | [
"3 milliliters",
"3 liters"
] | 1 | Select the better estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric units of volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.... | The better estimate for the volume of a coffee pot is 3 liters.
3 milliliters is too little. |
Can Hydra vulgaris cells make their own food? | [
"no",
"yes"
] | 0 | This organism is Hydra vulgaris. It is a member of the animal kingdom.
Hydra vulgaris can make new offspring through a process called budding. A small H. vulgaris can start to grow from the side of its parent. When the baby H. vulgaris is fully grown, it will split off from its parent. | yes or no | grade5 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Hydra vulgaris is an animal. Animal cells cannot make their own food. Animals get their food by digesting other organisms. | |
Based on the timeline, which statement is true? | [
"The Revolutionary War began 12 years after the end of the French and Indian War.",
"The Boston Massacre was the first battle of the Revolutionary War."
] | 0 | Between 1775 and 1783, Americans fought the British in the Revolutionary War. Look at the timeline of events in the years before the war. Then answer the question. | closed choice | grade8 | social science | us-history | The American Revolution | The Revolutionary War: preparing for war | |||
Not supported with pagination yet | Which object has the most thermal energy? | [
"a 180-gram bottle of water at a temperature of 69°F",
"a 180-gram bottle of water at a temperature of 63°F",
"a 180-gram bottle of water at a temperature of 82°F"
] | 2 | The objects are identical except for their temperatures. | closed choice | grade4 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter move faster, the temperature goes up. The matter now has both ... | All three bottles of water have the same mass but different temperatures. Since the 82°F bottle of water is the hottest, it has the most thermal energy. |
Which property do these three objects have in common? | [
"fuzzy",
"shiny",
"soft"
] | 1 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A soft object changes shape when pressed or squeezed. The metal bar and the sapphire are not soft.
A fuzzy object is covered in soft hair. None of the objects are fuzzy.
A shiny object reflects a lot of light. You can usually see your reflection in a... | |
Which country is highlighted? | [
"Barbados",
"Saint Kitts and Nevis",
"Antigua and Barbuda",
"Saint Vincent and the Grenadines"
] | 2 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Antigua and Barbuda. | |||
Which property do these three objects have in common? | [
"blue",
"hard",
"soft"
] | 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 soft object changes shape when pressed or squeezed. All three objects are soft.
A hard object does not change shape when pressed or squeezed. None of the objects are hard.
Blue is a color.
This color is blue. None of the objects are blue.
The prope... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Jacob described the situation he was facing with his boss as a catch-22. | [
"literature",
"a song"
] | 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 catch-22 is literature.
Joseph Heller coined the term "catch-22" in his 1961 novel of the same name. In the novel, if an army pilot wants to avoid dangerous missions, he must be deemed mentally unfit; however, his desire to stay safe proves his sanity, so he can never be excused from a missio... | |
Not supported with pagination yet | What do these two changes have in common?
an old sandwich rotting in a trashcan
a piece of pear turning brown | [
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are chemical changes."
] | 3 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
A sandwich rotting is a chemical change. The matter in the sandwich breaks down and slowly turns into a different type of matter.
A piece of a pear turning brown is a chemical change. The substances in the pear react with oxygen in the air and turn into a different type of matter.
If yo... | |
What can Leon and Martha trade to each get what they want? | [
"Leon can trade his tomatoes for Martha's carrots.",
"Leon can trade his tomatoes for Martha's broccoli.",
"Martha can trade her broccoli for Leon's oranges.",
"Martha can trade her almonds for Leon's tomatoes."
] | 1 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Leon and Martha open their lunch boxes in the school cafeteria. Neither Leon nor Martha got everything that they wanted. The tabl... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Leon wants broccoli. Martha 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 closing is correct for a letter? | [
"sincerely,\nBrenna",
"Sincerely,\nBrenna"
] | 1 | closed choice | grade3 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | Which is harder? | [
"wood bat",
"rubber band"
] | 0 | closed choice | grade2 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. | Hard is a property. A hard material keeps its shape when you press on it with your finger.
Look at each picture, one at a time. Imagine pushing on the material shown in each picture.
Of the choices, the wood bat is harder. If you squeeze a piece of wood, it will not change shape. | |
Not supported with pagination yet | Which is a compound sentence? | [
"That wool scarf looks soft and warm.",
"The coach makes us run laps, or he has us lift weights."
] | 1 | closed choice | grade3 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple or compound? | A simple sentence is a sentence with only one subject and predicate.
The pitcher threw the ball to first base.
A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so.
The pitcher threw the ball, and the batter hit it.
Some simple sentences have a compound subject or ... | The first sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction or.
The coach makes us run laps, or he has us lift weights. | |
Not supported with pagination yet | Is this a run-on sentence?
During the Civil War, the Union blocked the port of New Orleans, preventing the shipment of coffee, devoted coffee drinkers began mixing chicory with their coffee to make it last longer. | [
"no",
"yes"
] | 1 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify run-on sentences | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A run-on sentence is formed when two sentences are run together, joined by just a comma or by no punctuation at all. If only a comma is used, the run-on is called a comma s... | This is a run-on sentence. It is a comma splice formed from two sentences run together, joined by just a comma.
During the Civil War, the Union blocked the port of New Orleans, preventing the shipment of coffee, devoted coffee drinkers began mixing chicory with their coffee to make it last longer.
Here is one way to fi... | |
Select the organism in the same species as the American bullfrog. | [
"Hemidactylus turcicus",
"Lithobates catesbeianus",
"Bufo guttatus"
] | 1 | This organism is an American bullfrog. Its scientific name is Lithobates catesbeianus. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | An American bullfrog's scientific name is Lithobates catesbeianus.
Hemidactylus turcicus does not have the same scientific name as an American bullfrog. So, Lithobates catesbeianus and Hemidactylus turcicus are not in the same species.
Lithobates catesbeianus has the same scientific name as an American bullfrog. So, th... | |
What is the capital of Wyoming? | [
"Billings",
"Boise",
"Laramie",
"Cheyenne"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Cheyenne is the capital of Wyoming. | |||
Not supported with pagination yet | Which tense does the sentence use?
Uncle Brett will cook dinner for us. | [
"past tense",
"present tense",
"future tense"
] | 2 | closed choice | grade2 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, cook. The verb tells you about something that is going to happen. | |
Not supported with pagination yet | What is the mass of a dinner fork? | [
"75 kilograms",
"75 grams"
] | 1 | Select the better estimate. | closed choice | grade4 | natural science | units-and-measurement | Units and measurement | Choose metric units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using metric units, mass may be written with units of grams or kilograms.
There... | The better estimate for the mass of a dinner fork is 75 grams.
75 kilograms is too heavy. |
Not supported with pagination yet | Using only these supplies, which question can Tori investigate with an experiment? | [
"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 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 ... | 2 | Tori is outside with her friend on a sunny day. Tori 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 blac... | 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... | |
Not supported with pagination yet | Which is a sentence fragment? | [
"Danielle is from Fairfax now she lives in Middletown.",
"That awful noise from the large factory."
] | 1 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence, a fragment, or a run-on? | A sentence is a group of words that forms a complete thought. It has both a subject and a verb.
My friends walk along the path.
A sentence fragment is a group of words that does not express a complete thought. It is usually missing a subject or a verb.
Knows the answer.
This is a sentence fragment. It is missing a subj... | That awful noise from the large factory is a sentence fragment. It is missing a verb. | |
Not supported with pagination yet | Complete the sentence.
Butter melting on a hot day is a (). | [
"chemical change",
"physical change"
] | 1 | closed choice | grade3 | natural science | chemistry | Physical and chemical change | Identify physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Burning a piece of paper is a chemical change. When paper gets hot enough, it reacts with oxygen in the air and burn... | 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. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Carrie has five fingers on each hand. | [
"acquired",
"inherited"
] | 1 | Hint: Carrie was born with five fingers on each hand. | closed choice | grade3 | natural science | biology | Heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | Most humans are born with five fingers on each hand. So, having five fingers is an inherited trait. |
Which ocean is highlighted? | [
"the Arctic Ocean",
"the Indian Ocean",
"the Southern Ocean",
"the Atlantic Ocean"
] | 2 | 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 Southern Ocean.
The Southern Ocean reaches from the shores of Antarctica to 60° South latitude. | ||
Not supported with pagination yet | Which place usually has fewer cars? | [
"a rural area",
"an urban area"
] | 0 | closed choice | grade2 | social science | geography | Geography | Compare urban, suburban, and rural areas | People around the world live in three main kinds of places: urban areas, suburban areas, and rural areas.
An urban area is a city. It has many people and businesses. The buildings are close to each other. The buildings are often tall and have many floors. Since there are so many people, traffic is usually bad. People w... | There aren't as many cars or people in rural areas. | |
Not supported with pagination yet | What does the allusion in this text suggest?
Kurt seems to have the Midas touch. Without any special experience or training, he launched a thriving business and then established a well-respected charity. | [
"Kurt has a hands-on approach to his work.",
"Kurt is successful at all that he does."
] | 1 | closed choice | grade10 | 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 Kurt 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 property matches this object? | [
"opaque",
"hard"
] | 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.
An opaque object does not let light through. The glass flask is not opaque.
A hard object does not change shape when pressed or squeezed. The glass flask is hard. | |
Identify the question that Jackson's experiment can best answer. | [
"Do steel nails take fewer days to rust in water compared to vinegar?",
"Do steel nails rust in fewer days when submerged in a large volume of liquid compared to a small volume?"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Jackson put one two-inch steel nail into each of six test tubes. He added water to three of the test tubes and vinegar to the other three. In each test tube, he completely covered the nail with the same volume of liquid... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify the experimental question | Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment.
Imagine an experiment with two groups of daffodil plants. One group of plants was gr... | ||
Not supported with pagination yet | Suppose Dana decides to make egg drop soup. Which result would be a cost? | [
"The egg drop soup will be tastier than the chicken soup would have been.",
"Dana will spend more time making the egg drop soup than she would have spent making the chicken soup."
] | 1 | Dana is deciding whether to make egg drop soup or chicken soup for dinner. She wants dinner to be as tasty as possible. But she is also hungry and wants to eat soon. | closed choice | grade4 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Dana wants or needs:
Dana will spend more time making the egg drop soup than she would have spent making the chicken soup. |
Not supported with pagination yet | Complete the statement.
Potassium bromide is (). | [
"an elementary substance",
"a compound"
] | 1 | In some countries, potassium bromide can be used as medicine to treat seizures. The chemical formula for potassium bromide is KBr. | closed choice | grade8 | 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 potassium bromide 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 potassium bromide, KBr, contains... |
Not supported with pagination yet | Which is the smoothest? | [
"nylon swim shorts",
"rock wall",
"sandpaper"
] | 0 | closed choice | grade4 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy.
For examp... | Smooth is a property. A smooth material is not rough or bumpy.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the nylon swim shorts are the smoothest. If you touch nylon fabric, it will not feel rough. | |
Which part of the cabbage plant do we usually eat? | [
"the leaves",
"the flowers",
"the fruit"
] | 0 | People use cabbage 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 cabbage plant we usually eat is the leaves. They do most of the photosynthesis to make food for the plant. | |
What evidence of an earthquake does this picture show? | [
"There are large cracks in the road.",
"There is a white line along the side of the road."
] | 0 | This picture was taken after an earthquake. During an earthquake, the ground shakes. | closed choice | grade2 | natural science | earth-science | Earth events | Find evidence of changes to Earth's surface | Evidence is information that tells you something happened.
How do you look for evidence of a change to Earth's surface?
There are many ways to find evidence of a change to Earth's surface. One way is to look at a picture that was taken after the change.
Here are some examples of what the evidence for different changes ... | ||
As the string pulls on the kite, what is the direction of the opposing force? | [
"toward Lexi",
"away from Lexi"
] | 1 | The text below describes a pair of opposing forces. Opposing forces act on an object in opposite directions. Read the text. Then answer the question below.
Lexi flies a kite on a windy day. She uses a string to hold on to the kite. Think about two of the forces that act on the kite:
The wind pushes away from Lexi.
The ... | closed choice | grade3 | natural science | physics | Force and motion | How do balanced and unbalanced forces affect motion? | A force is a push or a pull that acts on an object. Each force acts on an object in a certain direction. If two forces act on an object in opposite directions, they are called opposing forces. | Find the direction the string pulls on the kite.
Lexi flies a kite on a windy day. She uses a string to hold on to the kite. Think about two of the forces that act on the kite:
The wind pushes away from Lexi.
The string pulls toward Lexi.
The text tells you that the string pulls toward Lexi. The opposite direction is a... | |
Not supported with pagination yet | Choose the poem that uses alliteration. | [
"Snug in my easy chair,\nI stirred the fire to flame.\nFantastically fair\nThe flickering fancies came.",
"When the cold dawn stood above the house-tops,\nToo late I remembered the cry\nIn the night of a wild bird flying\nThrough the rain-filled sky."
] | 0 | From Alice Corbin, "Apparitions" and from Wilfrid Wilson Gibson, "Fires" | closed choice | grade9 | language science | reading-comprehension | Analyzing literature | Identify elements of poetry | Poets often use the sounds of words to create interesting effects and to express moods and emotions. Understanding these elements of poetry can help you better interpret and appreciate poetic forms.
Anaphora is the repetition of words or sequences of words at the beginning of multiple phrases, sentences, or lines.
Out ... | This poem uses alliteration. It repeats beginning consonant sounds.
I stirred the fire to flame.
The flickering fancies came. |
Not supported with pagination yet | Select the animal. | [
"Hydrangea bushes can grow colorful flowers.",
"Maple trees have star-shaped leaves.",
"Snowy owls eat small animals.",
"Rose bushes can grow colorful flowers."
] | 2 | closed choice | grade3 | 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 rose bush is a plant. It can grow colorful flowers.
Most rose bushes have sharp thorns. The thorns help protect the rose bush from being eaten by animals.
A snowy owl is an animal. It eats small animals.
Snowy owls live in cold places. Snowy owls have feathers on their feet to protect them from the cold.
A maple tree... | |
Not supported with pagination yet | Complete the sentence.
The Second Amendment says that people have the right to own (). | [
"weapons",
"private roads",
"enslaved people",
"homes"
] | 0 | closed choice | grade4 | social science | civics | Government | The Bill of Rights | The Second Amendment says that the American people have the right to own weapons. In particular, it says that people can own "arms." The authors understood "arms" to include the type of weapons we now call guns. The complete text of the Second Amendment is below. According to the text, why is it important for Americans... | ||
Not supported with pagination yet | What does the euphemism in this text suggest?
Mr. Stevenson is enjoying his golden years in a luxurious beachside community just down the street from his grandchildren. | [
"Mr. Stevenson lives near his family.",
"Mr. Stevenson is old."
] | 1 | closed choice | grade10 | 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.
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 golden years indicates that Mr. Stevenson is old. Golden years is a nicer way of referring to old age. | |
What is the name of the colony shown? | [
"New York",
"South Carolina",
"Vermont",
"Pennsylvania"
] | 0 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is New York.
During the colonial era, New Hampshire and New York both claimed the territory that would later become the state of Vermont. Vermont was never its own colony. | |||
Not supported with pagination yet | What do these two changes have in common?
compost rotting
chicken cooking in an oven | [
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are caused by heating."
] | 0 | 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.
Compost forms from the remains of plants and animals, such as vegetable scraps and egg shells. Compost rotting is a chemical change. As the compost rots, it breaks down and turns into a different type of matter.
Cooking chicken is a chemical change. The heat causes the matter in the chi... | |
Will these magnets attract or repel each other? | [
"repel",
"attract"
] | 0 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"Halite is formed in nature. It is a solid.",
"A nutshell is not a pure substance. It is formed in nature.",
"Gypsum is a solid. It is a pure substance."
] | 1 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify minerals using properties | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Halite is a mineral.
Gypsum is a mineral.
A nutshell is not a pure substance. But all minerals are pure substances.
So, a nutshell is not a mineral. | |
Not supported with pagination yet | What is the mass of a full box of cereal? | [
"18 tons",
"18 ounces",
"18 pounds"
] | 1 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary units of mass | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or ton... | The best estimate for the mass of a full box of cereal is 18 ounces.
18 pounds and 18 tons are both too heavy. |
Select the organism in the same species as the Grevy's zebra. | [
"Equus grevyi",
"Cervus canadensis",
"Camelus dromedarius"
] | 0 | This organism is a Grevy's zebra. Its scientific name is Equus grevyi. | closed choice | grade5 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A Grevy's zebra's scientific name is Equus grevyi.
Equus grevyi has the same scientific name as a Grevy's zebra. So, these organisms are in the same species.
Camelus dromedarius does not have the same scientific name as a Grevy's zebra. So, Equus grevyi and Camelus dromedarius are not in the same species.
Cervus canade... | |
Based on the timeline, which of the following statements is true? | [
"A plan to govern the new country was written and adopted during the Revolutionary War.",
"The Articles of Confederation were first written during the Constitutional Convention.",
"The Articles of Confederation were never adopted by the states.",
"The Revolutionary War began after the Constitutional Conventio... | 0 | Look at some of the events that occurred before and after the founding of the United States. Then answer the question below. | closed choice | grade7 | social science | us-history | The Early Republic | The Articles of Confederation | |||
Not supported with pagination yet | Which figure of speech is used in this text?
Magnified apples appear and disappear,
Stem end and blossom end,
And every fleck of russet showing clear.
—Robert Frost, "After Apple-Picking" | [
"anaphora",
"assonance"
] | 1 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses assonance, the repetition of a vowel sound in a series of nearby words.
The words stem, end, every, and fleck share a vowel sound. | |
Not supported with pagination yet | Is the following statement true or false?
An animal cell does not have a cell wall. | [
"true",
"false"
] | 0 | true-or false | grade4 | natural science | biology | Cells | Cell part functions: true or false | An animal cell does not have a cell wall.
This statement is true. A plant cell has a cell wall, but an animal cell does not. The cell wall gives a plant cell its fixed shape. Most animal cells do not have a fixed shape. | ||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
fact - flood | [
"fiery",
"fox"
] | 0 | closed choice | grade2 | 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 fiery is between the guide words fact - flood, it would be found on that page. | |
Which is this organism's common name? | [
"great blue heron",
"Ardea herodias"
] | 0 | This organism is Ardea herodias. It is also called a great blue heron. | 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,... | Ardea herodias is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Ardea herodias is the organism's scientific name. So, you know that great blue heron is the common name. | |
Which country is highlighted? | [
"Tuvalu",
"Tonga",
"the Federated States of Micronesia",
"Fiji"
] | 0 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Tuvalu. | |||
Which animal's limbs are also adapted for swimming? | [
"humpback whale",
"great blue heron"
] | 0 | Sea turtles live in the ocean. They cover long distances in search of food and places to nest.
The has four flippers for limbs. Its limbs are adapted for swimming.
Figure: sea turtle. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: feet and limbs | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
Arms, legs, flippers, and wings are different types of limbs. The type of limbs an animal has is an example of an adaptation. Animals' limbs can be adapted in different ways. For examp... | Look at the picture of the sea turtle.
The sea turtle 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 swimming.
The great b... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
The sandy white beaches and turquoise waters make this Gulf of Mexico location its own little utopia. | [
"literature",
"U.S. history"
] | 0 | 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 utopia is literature.
Beginning with Sir Thomas More in 1516, countless authors have written about perfect worlds, or "utopias," often for the purpose of criticizing the societies in which they live.
The allusion utopia means an ideal place. | |
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."
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | 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.
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 | Compare the motion of two humpback whales. Which humpback whale was moving at a lower speed? | [
"a humpback whale that moved 20miles in 10hours",
"a humpback whale that moved 25miles in 10hours"
] | 0 | closed choice | grade2 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects movi... | Look at the distance each humpback whale moved and the time it took to move that distance.
One humpback whale moved 20 miles in 10 hours.
The other humpback whale moved 25 miles in 10 hours.
Notice that each humpback whale spent the same amount of time moving. The humpback whale that moved 20 miles moved a shorter dist... | |
What is the capital of Florida? | [
"Tallahassee",
"Richmond",
"Orlando",
"Columbia"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Tallahassee is the capital of Florida. | |||
Not supported with pagination yet | Which is the hardest? | [
"ice rink",
"linen handkerchief",
"silk kimono"
] | 0 | closed choice | grade4 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy.
For examp... | Hard is a property. A hard material keeps its shape when you press on it with your finger.
Look at each picture, one at a time. Imagine pushing on the material shown in each picture.
Of the choices, the ice rink is the hardest. If you step on the ice at an ice rink, it will not change shape. | |
Not supported with pagination yet | How long is a guitar? | [
"35 inches",
"35 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 35 inches.
35 feet is too long. |
Which continent was involved in the Seven Years' War? | [
"Africa",
"Australia"
] | 0 | The French and Indian War took place in North America in the 1750s and 1760s. That war was part of a much larger conflict known as the Seven Years' War. The map below highlights the countries and territories that fought in the Seven Years' War. Use the map to answer the question below. | closed choice | grade8 | social science | us-history | The American Revolution | Causes of the American Revolution: the French and Indian War | Look at the map.
The map shows that the conflict involved countries and territories throughout Africa, Asia, South America, Europe, and North America. The only continents not involved were Australia, where no Europeans had settled, and Antarctica, where no humans lived.
The French and Indian War was part of a global wa... | ||
Not supported with pagination yet | Is the following trait inherited or acquired?
Mia has a scar on her right leg. | [
"acquired",
"inherited"
] | 0 | Hint: Most scars are caused by accidents during a person's life. | closed choice | grade4 | natural science | biology | Traits and heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait. |
Not supported with pagination yet | Compare the motion of three ducks. Which duck was moving at the lowest speed? | [
"a duck that moved 430miles east in 10hours",
"a duck that moved 525miles north in 10hours",
"a duck that moved 555miles 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 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 duck moved and the time it took to move that distance. The direction each duck moved does not affect its speed.
Notice that each duck moved for 10 hours. The duck that moved 430 miles moved the shortest distance in that time. So, that duck must have moved at the lowest speed. | |
Not supported with pagination yet | Which correctly shows the title of a TV show? | [
"***Foster's Home for Imaginary Friends***",
"\"Foster's Home for Imaginary Friends\""
] | 0 | closed choice | grade6 | 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, article, or short story should be in quotation marks.
"You Are My Sunshine" | A TV show should be in italics.
The correct title is **Foster's Home for Imaginary Friends**. | |
Not supported with pagination yet | What does this Works Cited entry indicate about the cited work?
"Taxes Introduction." Shmoop. Shmoop University, n.d. Web. 2 Jan. 2014. | [
"It is a print source.",
"It is a review.",
"It is an online source."
] | 2 | 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:
"Taxes Introduction." Shmoop. Shmoop University, n.d. Web. 2 Jan. 2014.
You can tell that the cited work is an online source because "Web" is listed as the medium of publication. | |
Select the fish below. | [
"human",
"tiger shark"
] | 1 | Fish live underwater. They have fins, not limbs. A catfish is an example of a fish. | 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 human is a mammal. It has hair and feeds its young milk.
Humans are a type of animal called a primate. Monkeys and apes are also primates.
A tiger shark is a fish. It lives underwater. It has fins, not limbs.
Tiger sharks are nocturnal. This means that they are active mostly at night. | |
Not supported with pagination yet | What do these two changes have in common?
acid rain weathering a marble statue
milk going sour | [
"Both are caused by heating.",
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling."
] | 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.
Acid rain weathering a marble statue is a chemical change. The acid rain reacts with the outside of the statue and breaks it down into a different type of matter. This new matter is then washed away by the rain. Acid rain is a type of pollution. It forms when smoke from automobiles and ... | |
Not supported with pagination yet | Based on this information, what is Petunia's phenotype for the wool color trait? | [
"black wool",
"white wool"
] | 1 | In a group of sheep, some individuals have white wool and others have black wool. In this group, the gene for the wool color trait has two alleles. The allele for black wool (l) is recessive to the allele for white wool (L).
Petunia is a sheep from this group. Petunia has the homozygous genotype LL for the wool color g... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Petunia's genotype for the wool color gene is LL. Petunia's genotype of LL has only L allelles. The L allele is for white wool. So, Petunia's phenotype for the wool color trait must be white wool.
To check this answer, consider whether Petunia's alleles are dominant or recessive. The allele for black wool (l) is recess... |
Which property matches this object? | [
"sweet",
"blue"
] | 0 | 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.
Blue is a color.
This color is blue. The ice pop is not blue.
Sugar has a sweet taste. The ice pop is sweet. | |
Which country is highlighted? | [
"Haiti",
"Trinidad and Tobago",
"Barbados",
"Grenada"
] | 1 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Trinidad and Tobago. | |||
Which of the following was a dependent variable in this experiment? | [
"the type of food used in the bird feeders",
"the number of woodpeckers that visited the bird feeders"
] | 1 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Ben often saw woodpeckers perched in trees in his backyard, but he never saw them at his bird feeders. Ben usually filled his feeders with sunflower seeds. He wondered if he could attract woodpeckers by adding... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify independent and dependent variables | Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato... | ||
What is the capital of Vermont? | [
"Cheyenne",
"Savannah",
"Montpelier",
"Burlington"
] | 2 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Montpelier is the capital of Vermont. | |||
Not supported with pagination yet | Which correctly shows the title of an article? | [
"\"State of the Art\"",
"\"state of the Art\""
] | 0 | closed choice | grade4 | language science | capitalization | Formatting | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The words of and the are not important, so they should not be capitalized.
The correct title is "State of the Art." | |
Not supported with pagination yet | Which closing is correct for a letter? | [
"Thank You,\nColton",
"Thank you,\nColton"
] | 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 change better matches the sentence?
Water moves loose pieces of rock. | [
"drought",
"erosion"
] | 1 | closed choice | grade2 | natural science | earth-science | Earth events | Classify changes to Earth's surface | |||
Not supported with pagination yet | Read the following text from a student essay. How can the writer best improve his or her sentence fluency?
Our school needs to serve better food for lunch. Our lunches should be delicious. Our lunches should be nutritious. Our lunches should be satisfying. One way to achieve this would be to have a salad bar available.... | [
"by using shorter sentences",
"by combining sentences containing related information"
] | 1 | closed choice | grade6 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | When you review a fellow student's writing, try to make your feedback clear and specific. You can use questions such as the following to guide your feedback:
Ideas and development: Does the writer express a clear main idea and develop it with evidence, examples, and analysis?
Organization: Does the writer order ideas i... | The writer could best improve his or her sentence fluency by combining sentences containing related information.
For example, the writer could combine the underlined groups of sentences into sentences like Our lunches should be delicious, nutritious, and satisfying and Fresh fruits, fresh vegetables, and different kind... | |
Not supported with pagination yet | Which text uses the word peruse in its traditional sense? | [
"Before returning to the stockroom, Marco briefly perused the nails in the hardware aisle to see if anything needed to be restocked.",
"Marco perused the nails in the hardware aisle for almost an hour, trying to figure out which type would be best for his project."
] | 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 peruse in its traditional sense: to examine in detail.
Marco perused the nails in the hardware aisle for almost an hour, trying to figure out which type would be best for his project.
The second text uses peruse in its nontraditional sense: to look through in a casual manner.
Before returning to the... | |
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 | grade3 | 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. |
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.