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Which of these states is farthest east? | [
"Arizona",
"Texas",
"Oregon",
"Montana"
] | 1 | 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. Texas is farthest east. | ||
Not supported with pagination yet | Which tense does the sentence use?
Mr. Dodson will mail those letters. | [
"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, mail. The verb tells you about something that is going to happen. | |
Is the following statement about our solar system true or false?
The volume of Neptune is less than 75% of the volume of Uranus. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | To determine if this statement is true, calculate the value of 75% of the volume of Uranus by multiplying its volume by 0.75.
Then compare the result to the volume of Neptune. The volume of Neptune is 62,530 billion km^3, which is more than 51,248 billion km^3. So, the volume of Neptune is more than 75% of the volume o... | |
Based on the Venn diagram, who was a real person? | [
"Natty Bumppo",
"Daniel Boone"
] | 1 | This Venn diagram compares Natty Bumppo and Daniel Boone. | closed choice | grade5 | language science | writing-strategies | Visual elements | Read graphic organizers | A graphic organizer is a chart or picture that shows how ideas, facts, or topics are related to one another.
When you read, look for graphic organizers included in the text. You can use these images to find key information. You can also create your own graphic organizers with information that you've read. Doing this ca... | In a Venn diagram, each circle shows things that are true for a particular topic. The middle, where the two circles overlap, shows things that are true for both topics. This Venn diagram compares Natty Bumppo and Daniel Boone.
The detail real-life pioneer appears in the Daniel Boone circle but not in the Natty Bumppo c... | |
What is the name of the colony shown? | [
"South Carolina",
"Illinois",
"Maryland",
"North Carolina"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is South Carolina. | |||
What is the name of the colony shown? | [
"Delaware",
"Mississippi",
"Pennsylvania",
"New York"
] | 2 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Pennsylvania. | |||
Not supported with pagination yet | Which plate of spaghetti has less thermal energy? | [
"the hotter plate of spaghetti",
"the colder plate of spaghetti"
] | 1 | Two plates of spaghetti are identical except for their temperatures. | closed choice | grade6 | natural science | physics | 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 plates of spaghetti are made of the same material and have the same mass. So, the colder plate of spaghetti has less thermal energy. |
Is the following statement about our solar system true or false?
The volume of Uranus is less than one-tenth of the volume of Saturn. | [
"true",
"false"
] | 0 | Use the data to answer the question below. | true-or false | grade6 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | To determine if this statement is true, calculate the value of one-tenth the volume of Saturn.
Then compare the result to the volume of Uranus. The volume of Uranus is 68,300 billion km^3, which is less than 82,713 billion km^3. So, the volume of Uranus is less than one-tenth the volume of Saturn. | |
Not supported with pagination yet | Compare the motion of two mountain bikers. Which mountain biker was moving at a higher speed? | [
"a mountain biker who moved 95miles in 10hours",
"a mountain biker who moved 185miles in 10hours"
] | 1 | 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 mountain biker moved and the time it took to move that distance.
One mountain biker moved 185 miles in 10 hours.
The other mountain biker moved 95 miles in 10 hours.
Notice that each mountain biker spent the same amount of time moving. The mountain biker who moved 185 miles moved a farther dis... | |
Is Asimina triloba made up of many cells? | [
"yes",
"no"
] | 0 | This organism is Asimina triloba. It is a member of the plant kingdom.
Asimina triloba is commonly called the pawpaw. Pawpaw trees grow in the southeastern part of the United States. They have large, sweet fruit. The fruit is sometimes called a prairie banana. | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | Asimina triloba is a plant. Plants are made up of many cells. | ||
Not supported with pagination yet | Which text uses the word ironic in its traditional sense? | [
"Last winter, Turner took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, a rare snowstorm happened to hit Florida that week.",
"Last winter, Turner took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, he just missed a few of his college friends,... | 0 | 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 ironic in its traditional sense: contrary to what was intended, often in an amusing way. It's ironic because Turner tried to get away from the snow but found himself in a snowstorm regardless.
Last winter, Turner took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, ... | |
What is the capital of Alaska? | [
"Huntington",
"Anchorage",
"Bismarck",
"Juneau"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Juneau is the capital of Alaska. | |||
Which of these continents does the prime meridian intersect? | [
"South America",
"Antarctica",
"North America"
] | 1 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects Antarctica. It does not intersect South America or North America. | ||
Which of the following organisms is the secondary consumer in this food web? | [
"rough-legged hawk",
"grizzly bear",
"brown lemming"
] | 1 | 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 grizzly bear has an arrow pointing to it from the barren-ground caribou. The barr... | |
Not supported with pagination yet | What do these two changes have in common?
pouring milk on oatmeal
sewing an apron | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 2 | 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.
Pouring milk on oatmeal is a physical change. The oatmeal and milk form a creamy mixture. But making this mixture does not form a different type of matter.
Sewing an apron is a physical change. The fabric and thread that make up the apron get a new shape, but the type of matter in each ... | |
Complete the sentence.
The mutation in the () affected the structure and function of the (). | [
"PCSK9 protein . . . PCSK9 gene",
"PCSK9 gene . . . PCSK9 protein"
] | 1 | The following passage describes the effects of a gene mutation, which is a permanent change in a gene. Read the passage and then follow the instructions below.
Cholesterol (koh-LES-ter-ol) is a fat-like substance that has many functions in the body. Cholesterol moves through the body in the blood. The amount of choles... | closed choice | grade6 | natural science | biology | Genes to traits | Describe the effects of gene mutations on organisms | An organism's genes contain information about its proteins. Each gene encodes, or contains the instructions for making, one protein or a group of proteins.
A permanent change in a gene is called a mutation. Because a mutation changes a gene, the mutation may change the structure of the protein encoded by that gene.
The... | A mutation in a gene may affect the protein it encodes.
So, the mutation in the PCSK9 gene affected the structure and function of the PCSK9 protein. | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The steaming hot plate of spaghetti () to be eaten. | [
"called out",
"was ready"
] | 0 | closed choice | grade9 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the phrase called out. It describes the plate of spaghetti as if it were a person trying to get noticed. | |
Not supported with pagination yet | What do these two changes have in common?
chicken cooking in an oven
water evaporating from a puddle | [
"Both are chemical changes.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are caused by cooling."
] | 1 | 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.
Cooking chicken is a chemical change. The heat causes the matter in the chicken to change. Cooked chicken and raw chicken are different types of matter.
Water evaporating from a puddle is a change of state. So, it is a physical change. The liquid changes into a gas, but a different type... | |
Not supported with pagination yet | Based on this information, what is Mau's genotype for the fur color gene? | [
"ff",
"white fur"
] | 0 | In a group of Bengal tigers, some individuals have orange fur and others have white fur. In this group, the gene for the fur color trait has two alleles. The allele F is for orange fur, and the allele f is for white fur.
Mau, a Bengal tiger from this group, has white fur. Mau has two alleles for white 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 genotype for a gene is its combination of alleles for that gene. Mau has two alleles for white fur (f). So, Mau's genotype for the fur color gene is ff. |
Which country is highlighted? | [
"Trinidad and Tobago",
"The Bahamas",
"Dominica",
"Grenada"
] | 0 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Trinidad and Tobago. | |||
Is a hair clip a solid or a liquid? | [
"a liquid",
"a solid"
] | 1 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid or liquid | Solid and liquid 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 shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter is a li... | A hair clip is a solid. A solid has a size and shape of its own.
You can use a hair clip to keep your hair out of your face because the hair clip keeps its shape. | ||
Not supported with pagination yet | How long is an eyelash? | [
"9 millimeters",
"9 meters",
"9 centimeters",
"9 kilometers"
] | 0 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose metric units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using metric units, length can be written with units of millimeters, centimeters, meters, or kilometers. One meter contains 100 centimeters or 1,000 millimeters. So, 1 meter is lar... | The best estimate for the length of an eyelash is 9 millimeters.
9 centimeters, 9 meters, and 9 kilometers are all too long. |
Not supported with pagination yet | Complete the sentence.
The Third Amendment says that the government cannot force people to keep soldiers in their () during a time of peace. | [
"homes",
"towns",
"militias",
"states"
] | 0 | closed choice | grade4 | social science | civics | Government | The Bill of Rights | The Third Amendment says that the government can't force people to keep soldiers in their homes during a time of peace. The amendment says that no soldier shall be "quartered in any house." In this case, "quartered" means "given a place to stay." The complete text of the Third Amendment is below. Are there any times wh... | ||
What is the capital of North Carolina? | [
"Tallahassee",
"Raleigh",
"Oklahoma City",
"Charlotte"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Raleigh is the capital of North Carolina. | |||
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Zane described the situation he was facing with his boss as a catch-22. | [
"literature",
"a song"
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion 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 | Select the vertebrate. | [
"red-spotted purple butterfly",
"peacock mantis shrimp",
"peafowl",
"bull ant"
] | 2 | Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates. | closed choice | grade5 | natural science | biology | Classification | Identify vertebrates and invertebrates | Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backb... | A bull ant is an insect. Like other insects, a bull ant is an invertebrate. It does not have a backbone. It has an exoskeleton.
A peafowl is a bird. Like other birds, a peafowl is a vertebrate. It has a backbone.
A red-spotted purple butterfly is an insect. Like other insects, a red-spotted purple butterfly is an inver... |
Not supported with pagination yet | What is the mass of an earthworm? | [
"4 kilograms",
"4 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 an earthworm is 4 grams.
4 kilograms is too heavy. |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
laugh - lime | [
"log",
"leaf"
] | 1 | 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 leaf is between the guide words laugh - lime, it would be found on that page. | |
Not supported with pagination yet | Which word does not rhyme? | [
"luck",
"black",
"duck"
] | 1 | closed choice | grade2 | language science | phonological-awareness | Rhyming | Which word does not rhyme? | Rhyming words are words that end with the same sound.
The words tip and slip rhyme. They both end with the same sound.
The words meet and treat also rhyme. They both end with the same sound, even though the sound has two different spellings.
The words tip and meet don't rhyme. They end with different sounds. | The words luck and duck rhyme. They both end with the uck sound.
The word black does not rhyme. It ends with a different sound. | |
Not supported with pagination yet | What do these two changes have in common?
mixing lettuce and salad dressing
water vapor condensing on a bathroom mirror | [
"Both are caused by cooling.",
"Both are chemical changes.",
"Both are caused by heating.",
"Both are only physical changes."
] | 3 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Mixing lettuce and salad dressing is a physical change. Together, the salad and dressing make a mixture. But making this mixture does not form a different type of matter.
Water vapor condensing on a bathroom mirror is a change of state. So, it is a physical change. The water changes sta... | |
Not supported with pagination yet | Which text uses the word travesty in its traditional sense? | [
"Mark realized that his essay about the Space Race was a bit inaccurate, but he still thought it a travesty that such an entertaining essay should receive a poor grade.",
"Mark's ill-researched essay about the Space Race received a poor grade because it presented such a travesty of the actual historical events."
... | 1 | closed choice | grade10 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The first text uses travesty in its traditional sense: a ridiculous imitation; a parody.
Mark's ill-researched essay about the Space Race received a poor grade because it presented such a travesty of the actual historical events.
The second text uses travesty in its nontraditional sense: a disappointment or a tragedy.
... | |
Not supported with pagination yet | What do these two changes have in common?
breaking a pencil in half
cutting an apple | [
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are caused by heating."
] | 1 | closed choice | grade3 | 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.
Breaking a pencil is a physical change. The pencil gets broken into pieces. But each piece is still made of the same type of matter.
Cutting an apple is a physical change. The apple gets a different shape. But it is still made of the same type of matter as the uncut apple.
Step 2: Look ... | |
Not supported with pagination yet | Which tense does the sentence use?
The man will type the note on his computer. | [
"present tense",
"future 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 future tense. You can tell because it uses will before the main verb, type. The verb tells you about something that is going to happen. | |
Which country is highlighted? | [
"Saint Lucia",
"Saint Vincent and the Grenadines",
"Barbados",
"Grenada"
] | 1 | closed choice | grade8 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Vincent and the Grenadines. | |||
Not supported with pagination yet | Would you find the word please on a dictionary page with the following guide words?
painting - peanut | [
"yes",
"no"
] | 1 | yes or no | 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 please is not between the guide words painting - peanut, it would not be found on that page. | |
Which property do these two objects have in common? | [
"slippery",
"scratchy"
] | 0 | 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 scratchy object is rough and itchy against your skin. Neither of the objects are scratchy.
A slippery object is hard to hold onto or stand on. Both objects are slippery.
The property that both objects have in common is slippery. | |
Which of these organisms contains matter that was once part of the bilberry? | [
"lichen",
"bear sedge",
"brown lemming"
] | 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 | grade7 | natural science | biology | Ecological interactions | Interpret food webs II | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Use the arrows to follow how matter moves through this food web. For each answer choice, try to find a path of arrows that starts from the bilberry.
The lichen does not have any arrows pointing to it. So, in this food web, matter does not move from the bilberry to the lichen.There is one path matter can take from the b... | |
What is the name of the colony shown? | [
"Kentucky",
"Pennsylvania",
"Maryland",
"Delaware"
] | 3 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Delaware. | |||
Not supported with pagination yet | What is Abraham Lincoln famous for? | [
"He helped write the Declaration of Independence.",
"He was president of the United States.",
"He gave women the right to vote."
] | 1 | closed choice | grade3 | social science | us-history | Historical figures | Abraham Lincoln | Abraham Lincoln was the 16 th president of the United States. He is famous for helping to end slavery. He is also famous for leading the country through the Civil War. | ||
Not supported with pagination yet | How long is a garden rake? | [
"2 kilometers",
"2 meters"
] | 1 | Select the better estimate. | closed choice | grade3 | natural science | units-and-measurement | Units and measurement | Choose metric 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 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers?
The number 16 on its own does not give you much informa... | The better estimate for the length of a garden rake is 2 meters.
2 kilometers is too long. |
Which better describes the De Biesbosch National Park ecosystem? | [
"It has soil that is rich in nutrients. It also has other water ecosystems nearby.",
"It has soil that is poor in nutrients. It also has other water ecosystems nearby."
] | 0 | Figure: De Biesbosch National Park.
De Biesbosch National Park is a wetland ecosystem in the Netherlands. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A wetland is a type of ecosystem. Wetlands have the following features: land that is covered with water during most of the year, soil that is rich in nutrients, and other water ecosystems nearby. So, De Biesbosch National Park has soil that is rich in nutrients. It also has other water ecosystems nearby. | |
Not supported with pagination yet | Which sentence is more formal? | [
"Mecca's a city in Saudi Arabia, and it's an important religious center for Muslims around the world.",
"Mecca, a city in Saudi Arabia, is a religious center for Muslims around the world."
] | 1 | closed choice | grade7 | language science | writing-strategies | Author's purpose and tone | Which sentence is more formal? | Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing:
Type | Examples
slang | cool, awesome
idioms | knock your socks off
conversational language | gonna, kinda, yeah
abbreviated language | ASAP, FYI
overly simple or imprecise lan... | The first sentence is less formal. You can tell because it uses contractions (Mecca's, it's).
The second sentence does not use contractions, so it is more formal. | |
Which of these states is farthest north? | [
"Virginia",
"Colorado",
"Oregon",
"Ohio"
] | 2 | closed choice | grade4 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Oregon is farthest north. | ||
Which of these cities is marked on the map? | [
"New York City",
"Detroit",
"Philadelphia",
"New Orleans"
] | 1 | closed choice | grade5 | social science | geography | Cities | Major U.S. cities | The city is Detroit, Michigan. New York City, New Orleans, and Philadelphia are marked with gray circles on the map below. | |||
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"As Eva entered the harbor, her sailboat bumped into the old wooden pier; she was relieved that it didn't sustain any damage.",
"As Eva entered the harbor, her sailboat bumped into the old wooden pier; she was relieved that the boat didn't sustain any damage."
] | 0 | closed choice | grade11 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The second answer choice contains a vague pronoun reference. The pronoun it could refer to the sailboat or the old wooden pier.
The first answer choice shows a possible correction for the vague pronoun reference. It has been replaced with the boat.
As Eva entered the harbor, her sailboat bumped into the old wooden pier... | |
Select the organism in the same genus as the barn owl. | [
"Acanthaster planci",
"Tyto alba",
"Ardea alba"
] | 1 | This organism is a barn owl. Its scientific name is Tyto alba. | closed choice | grade6 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A barn owl's scientific name is Tyto alba. The first word of its scientific name is Tyto.
Ardea alba and Tyto alba are not in the same genus.
These organisms are not in the same genus, but part of their scientific names is the same. Ardea alba and Tyto alba have the same species name within their genus, alba. But the f... | |
Not supported with pagination yet | What kind of sentence is this?
I can't believe this is Denise's first time seeing the Pacific Ocean! | [
"exclamatory",
"interrogative",
"declarative"
] | 0 | closed choice | grade6 | language science | punctuation | Sentences, fragments, and run-ons | Is the sentence declarative, interrogative, imperative, or exclamatory? | There are four kinds of sentences.
A declarative sentence is a statement, and it always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An interrogative sentence is a question, and it always ends with a question mark.
Do you have any plans for the upcoming... | The sentence tells about something, but it shows surprise and ends with an exclamation point. It is an exclamatory sentence. | |
Not supported with pagination yet | Which tense does the sentence use?
Quinn will sweep the sidewalk in front of her store. | [
"past tense",
"future tense",
"present tense"
] | 1 | closed choice | grade5 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in future tense. You can tell because it uses will before the main verb, sweep. The verb tells you about something that is going to happen. | |
Is the following statement about our solar system true or false?
Of the four largest planets, three are made mainly of gas. | [
"false",
"true"
] | 0 | Use the data to answer the question below. | true-or false | grade7 | natural science | earth-science | Astronomy | Analyze data to compare properties of planets | A planet's volume tells you the size of the planet.
The primary composition of a planet is what the planet is made mainly of. In our solar system, planets are made mainly of rock, gas, or ice. | The table tells you that the four largest planets are Jupiter, Saturn, Uranus, and Neptune. Jupiter and Saturn are made mainly of gas. Uranus and Neptune are made mainly of ice. So, of the four largest planets, two are made mainly of gas. | |
Not supported with pagination yet | Select the invertebrate. | [
"grasshopper",
"West African rubber frog",
"bald eagle",
"water buffalo"
] | 0 | Hint: Insects, spiders, and worms are invertebrates. | 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 water buffalo is a mammal. Like other mammals, a water buffalo is a vertebrate. It has a backbone.
A grasshopper is an insect. Like other insects, a grasshopper is an invertebrate. It does not have a backbone. It has an exoskeleton.
A West African rubber frog is an amphibian. Like other amphibians, a West African rub... |
Not supported with pagination yet | Would you find the word mystery on a dictionary page with the following guide words?
magic - merely | [
"yes",
"no"
] | 1 | yes or no | 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 mystery is not between the guide words magic - merely, it would not be found on that page. | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Right after she bought it, Leslie dropped the book for her literature class.",
"Right after Leslie bought the book for her literature class, she dropped it."
] | 1 | closed choice | grade6 | language science | pronouns | 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 it could refer to the book or the class.
Right after Leslie bought the book for her literature class, she dropped it.
The second answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the mean... | |
Not supported with pagination yet | What do these two changes have in common?
stapling an envelope shut
ice crystals forming on a window | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 2 | closed choice | grade8 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Stapling an envelope shut is a physical change. The envelope and the staple get new shapes. Both are still made of the same type of matter.
Ice crystals forming on a window is a change of state. So, it is a physical change. Water vapor in the air can change directly into ice when it tou... | |
What is the capital of Illinois? | [
"Springfield",
"Saint Paul",
"Cleveland",
"Topeka"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Springfield is the capital of Illinois. | |||
Not supported with pagination yet | What is the volume of a kiddie pool? | [
"1,170 milliliters",
"1,170 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 kiddie pool is 1,170 liters.
1,170 milliliters is too little. |
Which solution has a higher concentration of purple particles? | [
"neither; their concentrations are the same",
"Solution A",
"Solution B"
] | 2 | The diagram below is a model of two solutions. Each purple ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the purple particles represent the solute. To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
Use the concentration formula to find the number of purple particles per mill... | |
What is the capital of Alaska? | [
"Anchorage",
"Salt Lake City",
"Juneau",
"Cheyenne"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Juneau is the capital of Alaska. | |||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 1."
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes. | 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,... | Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magnitude of the magnetic force between them is smaller.
There is a greater distance between the magnets in Pair 2 than in Pair 1. So, the magnitude of the magnetic force is smaller in Pair 2 than in Pair 1. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
sale - stammer | [
"sunk",
"seldom"
] | 1 | closed choice | grade4 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since seldom is between the guide words sale - stammer, it would be found on that page. | |
Select the organism in the same genus as the gray heron. | [
"Chroicocephalus novaehollandiae",
"Ardea herodias",
"Hyla cinerea"
] | 1 | This organism is a gray heron. Its scientific name is Ardea cinerea. | closed choice | grade6 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A gray heron's scientific name is Ardea cinerea. The first word of its scientific name is Ardea.
Chroicocephalus novaehollandiae is in the genus Chroicocephalus. The first word of its scientific name is Chroicocephalus. So, Chroicocephalus novaehollandiae and Ardea cinerea are not in the same genus.
Ardea herodias is i... | |
Not supported with pagination yet | Using only these supplies, which question can Emily investigate with an experiment? | [
"Do sunflowers grow taller if they are planted in planter boxes or in pots?",
"Which type of sunflower grows more leaves?",
"Do sunflowers grow bigger in sunny planter boxes or in shady planter boxes?"
] | 2 | Emily wants to grow sunflowers in her backyard garden. She notices that some sunflowers grow much taller than others. She is curious about what factors affect how sunflowers grow. So, she decides to design an experiment. She has the following supplies available:
seeds from one type of sunflower
soil
one wooden planter ... | closed choice | grade8 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Not supported with pagination yet | Which greeting is correct for a letter? | [
"Dear aunt jenny,",
"Dear Aunt Jenny,"
] | 1 | closed choice | grade4 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second greeting is correct:
Its first word is capitalized, and it ends with a comma. Aunt Jenny is capitalized because it is a proper noun. | |
Not supported with pagination yet | Which is a compound sentence? | [
"Dad took the last chair, so you will have to stand.",
"The Mississippi River flows from Lake Itasca to the Gulf of Mexico."
] | 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.
Dad took the last chair, so you will have to stand. | |
Complete the statement.
Cobalt is (). | [
"an elementary substance",
"a compound"
] | 0 | The model below represents cobalt. balt is a metal found in substances that make paint blue. | closed choice | grade8 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are ... | Use the model to determine whether cobalt is an elementary substance or a compound.
Step 1: Interpret the model.
In the space-filling model shown above, all of the balls are the same color:
. The legend shows that dark blue represents the chemical element with the atomic symbol Co. So, the model shows you that cobalt i... | |
Which of the following could Jill'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 | grade7 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | Which would smell more? | [
"bone",
"gum"
] | 1 | closed choice | grade2 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. | Smelly is a property. A smelly material has a strong smell.
Look at each picture, one at a time. Imagine smelling the material shown in each picture.
Of the choices, the gum would smell more. Gum has a strong smell. | |
Not supported with pagination yet | Which is a run-on sentence? | [
"The child chews her food carefully.",
"The park is a beautiful place, everyone goes there."
] | 1 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence 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 run-on sentence is made up of two sentences that are joined without end punctuation or with just a comma.
I knocked on the door it opened.
It started raining, we ran inside.
To fix a run-on ... | The park is a beautiful place, everyone goes there is a run-on sentence. It has two sentences that are joined by just a comma: The park is a beautiful place and Everyone goes there. | |
What is the name of the colony shown? | [
"Ohio",
"South Carolina",
"Delaware",
"New Jersey"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is New Jersey. | |||
Not supported with pagination yet | Which logical fallacy is used in the text?
Did you hear? A bunch of Liam's friends were at that protest that got out of hand. I had no idea that Liam was such a troublemaker. | [
"false dichotomy: an argument that presents only two choices when more options exist",
"guilt by association: a negative association intended to discredit someone or something",
"straw man: a misrepresentation of an opponent's position that makes it easier to argue against"
] | 1 | closed choice | grade10 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Liam must be a troublemaker because his friends were at an unruly protest. However, the behavior of Liam's friends doesn't necessarily determine his own behavior. This illustrates a type of logical fallacy known as guilt by association. | |
Not supported with pagination yet | Which is a run-on sentence? | [
"An email from my friend in Italy.",
"Mr. Soto will teach a math lesson the children will take notes."
] | 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... | Mr. Soto will teach a math lesson the children will take notes is a run-on sentence. It has two sentences that are joined without end punctuation: Mr. Soto will teach a math lesson and The children will take notes. | |
Not supported with pagination yet | Complete the statement.
During this chemical reaction, the airbag becomes (). | [
"warmer",
"colder"
] | 0 | When a chemical reaction absorbs or releases thermal energy, the reaction causes a change in temperature. Read the passage about a chemical reaction that absorbs or releases thermal energy. Then, follow the instructions below.
Airbags reduce injuries during car crashes by inflating quickly to provide cushions for peopl... | closed choice | grade6 | natural science | chemistry | Chemical reactions | Describe energy changes in chemical reactions | During a chemical reaction, thermal energy is absorbed or released as heat. This transfer of thermal energy changes the temperature of the reaction's surroundings. The surroundings are everything around the reaction, such as the solution that the reaction takes place in or the air nearby.
Some reactions release thermal... | To determine whether the airbag becomes warmer or colder, look for the text that describes the movement of thermal energy during the reaction.Airbags reduce injuries during car crashes by inflating quickly to provide cushions for people inside a car. Older airbags contain a small amount of sodium azide (NaN3). If a cra... |
What is the capital of Iowa? | [
"Lincoln",
"Des Moines",
"Cedar Rapids",
"Davenport"
] | 1 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Des Moines is the capital of Iowa. | |||
Not supported with pagination yet | Is the following trait inherited or acquired?
Ed has a scar on his left hand. | [
"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. |
Based on the time line, how many years passed between the publication of The Voyage of the Dawn Treader and The Magician's Nephew? | [
"one year",
"three years"
] | 1 | This time line shows the publication dates of the books in The Chronicles of Narnia by C. S. Lewis. | closed choice | grade6 | language science | writing-strategies | Visual elements | Read graphic organizers | A graphic organizer is a chart or picture that shows how ideas, facts, or topics are related to one another.
When you read, look for graphic organizers included in the text. You can use these images to find key information. You can also create your own graphic organizers with information that you've read. Doing this ca... | A time line shows the order of events by placing them along a line. This time line shows the publication dates of the books in The Chronicles of Narnia by C. S. Lewis.
Look at the years given in the time line. The Voyage of the Dawn Treader was published in 1952. The Magician's Nephew was published in 1955. So, three y... | |
Which of the following was a dependent variable in this experiment? | [
"the type of bed rail",
"the number of patients who got new infections"
] | 1 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Many types of bacteria cannot survive on objects made of copper. Dr. Bennett was considering using beds with copper bed rails instead of beds with plastic rails at the hospital where she worked. She wanted to ... | 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... | ||
Not supported with pagination yet | Complete the sentence.
In this chemical reaction, hydrogen is a (). | [
"reactant",
"product"
] | 0 | This passage describes a chemical reaction. Read the passage. Then, follow the instructions below.
The Space Shuttle program sent astronauts on 135 missions using a fleet of five shuttles between 1981 and 2011. The engines of each shuttle, like other modern rocket engines, used liquid hydrogen as fuel. When liquid hydr... | closed choice | grade7 | natural science | chemistry | Chemical reactions | Identify reactants and products | A chemical change occurs when new substances are formed from existing substances. This process is called a chemical reaction.
In a chemical reaction, one or more substances change into one or more different substances. During the reaction, the atoms of the original substances are rearranged to form other substances.
Th... | Read the underlined text carefully. Look for information about what happens to hydrogen in this chemical reaction.
The Space Shuttle program sent astronauts on 135 missions using a fleet of five shuttles between 1981 and 2011. The engines of each shuttle, like other modern rocket engines, used liquid hydrogen as fuel. ... |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
bitter - buffalo | [
"bound",
"bed"
] | 0 | closed choice | grade3 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since bound is between the guide words bitter - buffalo, it would be found on that page. | |
Not supported with pagination yet | Which phrase has a more negative connotation? | [
"speak about something",
"grumble about something"
] | 1 | closed choice | grade4 | language science | vocabulary | Shades of meaning | Positive and negative connotation | Connotation is the feeling or idea that goes along with a word or phrase. Some words are close in meaning but have different connotations.
For example, think about the words eager and impatient. They both mean wanting something to happen, but they have different connotations.
Eager has a positive connotation. It is a n... | Grumble about something has a more negative connotation. If you grumble about something, you speak about it in an unhappy, complaining way. | |
Not supported with pagination yet | Select the solid. | [
"fork",
"grape juice",
"air inside a bubble"
] | 0 | closed choice | grade2 | 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 shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter i... | The air inside a bubble is a gas. A gas spreads out to fill a space. The air inside a bubble fills all the space in the bubble. If the bubble pops, the air will spread out to fill a much larger space.
A fork is a solid. You can bend a fork. But it will still have a size and shape of its own.
Grape juice is a liquid. A ... | |
Not supported with pagination yet | Complete the sentence so that it uses personification.
The run-down truck () through its very last trip. | [
"lasted",
"suffered"
] | 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 word suffered. It describes the truck as if it were an old, sick person. | |
What is the capital of Wyoming? | [
"Laramie",
"Saint Paul",
"Baton Rouge",
"Cheyenne"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the West | Cheyenne is the capital of Wyoming. | |||
Not supported with pagination yet | Which closing is correct for a letter? | [
"Thank You,\nLuther",
"Thank you,\nLuther"
] | 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 first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
What is the capital of Kansas? | [
"Wichita",
"Kansas City",
"Des Moines",
"Topeka"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Topeka is the capital of Kansas. | |||
Not supported with pagination yet | Which tense does the sentence use?
They will fix the car engine. | [
"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, fix. The verb tells you about something that is going to happen. | |
Which animal's skin is also adapted for survival in cold places? | [
"naked mole rat",
"polar bear"
] | 1 | Snowy owls live in the cold, snowy plains of the Arctic. The 's skin is adapted to help the animal survive in cold places.
Figure: snowy owl. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the snowy owl.
The snowy owl has a thick coat of feathers covering its skin. Its skin is adapted for survival in cold places. The snowy owl uses its feathers to keep warm in cold weather.
Now look at each animal. Figure out which animal has a similar adaptation.
The polar bear has skin with thick... | |
Not supported with pagination yet | Which object has the most thermal energy? | [
"a metal paper clip at a temperature of 16°C",
"a metal paper clip at a temperature of 20°C",
"a metal paper clip at a temperature of 23°C"
] | 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 metal paper clips have the same mass but different temperatures. Since the 23°C paper clip is the hottest, it has the most thermal energy. |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"At lunchtime, Mike can often be found reading at his favorite café, where they provide unlimited coffee refills.",
"At lunchtime, Mike can often be found reading at his favorite café, where the servers provide unlimited coffee refills."
] | 0 | closed choice | grade10 | language science | writing-strategies | Pronouns | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun they is used without its antecedent.
The second answer choice shows a possible correction for the vague pronoun reference. They has been replaced with the servers.
At lunchtime, Mike can often be found reading at his favorite café, where the server... | |
Not supported with pagination yet | Would you find the word sung on a dictionary page with the following guide words?
shot - stork | [
"yes",
"no"
] | 1 | yes or no | grade7 | language science | reference-skills | Reference skills | Use guide words | Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order.
To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let... | Put the words in alphabetical order.
Since sung is not between the guide words shot - stork, it would not be found on that page. | |
Which better describes the Death Valley ecosystem? | [
"It has a small amount of rain. It also has many different types of organisms.",
"It has a small amount of rain. It also has only a few types of organisms."
] | 0 | Figure: Death Valley.
Death Valley is a desert ecosystem in eastern California. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | A desert is a type of ecosystem. Deserts have the following features: a small amount of rain, dry, thin soil, and many different types of organisms. So, Death Valley has a small amount of rain. It also has many different types of organisms. | |
What can Rodrigo and Kathleen trade to each get what they want? | [
"Kathleen can trade her broccoli for Rodrigo's oranges.",
"Rodrigo can trade his tomatoes for Kathleen's broccoli.",
"Kathleen can trade her almonds for Rodrigo's tomatoes.",
"Rodrigo can trade his tomatoes for Kathleen's carrots."
] | 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.
Rodrigo and Kathleen open their lunch boxes in the school cafeteria. Neither Rodrigo nor Kathleen got everything that they wanted... | closed choice | grade7 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Rodrigo wants broccoli. Kathleen 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. | ||
Which continent is highlighted? | [
"Australia",
"Africa",
"North America",
"South America"
] | 1 | closed choice | grade3 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is Africa. | ||
Not supported with pagination yet | Which is a run-on sentence? | [
"We wanted a snack we ate some cherries.",
"The conductor took tickets from everyone on the train."
] | 0 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence 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 run-on sentence is made up of two sentences that are joined without end punctuation or with just a comma.
I knocked on the door it opened.
It started raining, we ran inside.
To fix a run-on ... | We wanted a snack we ate some cherries is a run-on sentence. It has two sentences that are joined without end punctuation: We wanted a snack and We ate some cherries. | |
Which is this organism's common name? | [
"luna moth",
"Actias luna"
] | 0 | This organism is Actias luna. It is also called a luna moth. | 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,... | Actias luna is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Actias luna is the organism's scientific name. So, you know that luna moth is the common name. | |
Not supported with pagination yet | Does this passage describe the weather or the climate?
The air in Boulder, Colorado, is often dry in the winter. | [
"weather",
"climate"
] | 1 | 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.
The air in Boulder, Colorado, is often dry in the winter.
Humidity is the amount of water in the air.
This passage tells you about the usual winter humidity in Boulder. It does not describe what the weather is like on a particular day. So, this passage describes the climate. | |
Not supported with pagination yet | Complete the statement. Assume that the athlete's mass did not change.
The gravitational potential energy stored between the athlete and Earth () as she sped up around the track. | [
"increased",
"stayed the same",
"decreased"
] | 1 | Read the text about a person in motion.
An athlete competed in a 5,000-meter wheelchair race. As she began her last lap around the flat track, she pushed hard and sped past another racer. | closed choice | grade7 | natural science | physics | Kinetic and potential energy | Identify changes in gravitational potential energy | Gravitational potential energy is stored between any two objects. So, for every object on or near Earth, there is gravitational potential energy stored between the object and Earth.
The amount of gravitational potential energy stored between an object and Earth depends on the mass of the object. The amount of gravitati... | Think about how the distance between the athlete and the center of Earth changed.
Because the track was flat, each point on the track was the same distance from the center of Earth. As she sped up around the track, the distance between the athlete and the center of Earth stayed the same. So, the gravitational potential... |
Which type of relationship is formed when a woolly bat roosts in a tropical pitcher plant's trap? | [
"commensal",
"parasitic",
"mutualistic"
] | 2 | Read the passage. Then answer the question.
Tropical pitcher plants live in soil that is poor in nutrients. To get the nutrients it needs to survive, the plant uses a pitcher-shaped leaf as a trap to catch and digest small organisms. But the plant can also get nutrients from other sources, including from the feces of ... | closed choice | grade7 | natural science | biology | Ecological interactions | Classify symbiotic relationships | When two organisms of different species interact in a way that affects one or both organisms, they form a symbiotic relationship. The word symbiosis comes from a Greek word that means living together. Scientists define types of symbiotic relationships based on how each organism is affected.
This table lists three commo... | When a woolly bat roosts in a tropical pitcher plant's trap, the bat can hide from predators and bad weather. So, the bat benefits from its relationship with the plant.
The plant absorbs nutrients from the bat's feces. So, the plant also benefits from its relationship with the bat.
Since both the bat and the plant bene... | |
Not supported with pagination yet | What do these two changes have in common?
a sidewalk heating up in the sun
a puddle freezing into ice on a cold night | [
"Both are chemical changes.",
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes."
] | 3 | closed choice | grade3 | 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 sidewalk heating up in the sun is a physical change. The temperature of the sidewalk goes up, but the sidewalk is still made of the same type of matter.
A puddle freezing into ice on a cold night is a change of state. So, it is a physical change. Liquid water freezes and becomes solid... | |
Is quartz a mineral? | [
"yes",
"no"
] | 0 | Quartz has the following properties:
solid
not made by living things
fixed crystal structure
made of a pure substance called silica
found in nature | yes or no | grade6 | natural science | earth-science | Rocks and minerals | Identify rocks and minerals | Properties are used to identify different substances. Minerals have the following properties:
It is a solid.
It is formed in nature.
It is not made by organisms.
It is a pure substance.
It has a fixed crystal structure.
If a substance has all five of these properties, then it is a mineral.
Look closely at the last thre... | Quartz has all the properties of a mineral. So, quartz is a mineral. | |
What is the capital of Delaware? | [
"Annapolis",
"Georgetown",
"Harrisburg",
"Dover"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Dover is the capital of Delaware. | |||
Not supported with pagination yet | How long is a caterpillar? | [
"49 millimeters",
"49 kilometers",
"49 centimeters"
] | 0 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose metric 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.
When you are using metric units, length can be written with units of millimeters, centimeters, meters, or kilometers. One meter contains 100 centimeters or 1,000 millimeters. So, 1 meter is lar... | The best estimate for the length of a caterpillar is 49 millimeters.
49 centimeters and 49 kilometers are both too long. |
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.