image imagewidth (px) 53 760 ⌀ | question stringlengths 14 862 | choices listlengths 2 5 | answer int8 0 4 | hint stringlengths 0 1.85k | task stringclasses 3
values | grade stringclasses 12
values | subject stringclasses 3
values | topic stringclasses 26
values | category stringclasses 119
values | skill stringclasses 321
values | lecture stringclasses 256
values | solution stringlengths 0 2.72k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
What is the capital of Rhode Island? | [
"Saint Louis",
"Newport",
"Providence",
"New Orleans"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Providence is the capital of Rhode Island. | |||
Not supported with pagination yet | Which logical fallacy is used in the text?
Don't ever get a ride from Ava. Her brother has been driving for only six months, and he's already gotten three speeding tickets. | [
"guilt by association: a negative association intended to discredit someone or something",
"appeal to nature: the assumption that natural things are always good"
] | 0 | closed choice | grade7 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Ava must be a reckless driver, because her brother is a reckless driver. However, even though Ava's brother is reckless, that doesn't necessarily mean that Ava is, too. This illustrates a type of logical fallacy known as guilt by association. | |
What is the capital of California? | [
"Sacramento",
"San Francisco",
"Los Angeles",
"Santa Fe"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify the 50 state capitals | Sacramento is the capital of California. | |||
Not supported with pagination yet | Which figure of speech is used in this text?
"Your new hairstyle is so boring!" Eric remarked when his sister showed up with a pink-and-blue mohawk. | [
"verbal irony",
"simile"
] | 0 | closed choice | grade7 | language science | figurative-language | Literary devices | Classify figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses verbal irony, which involves saying one thing but implying something very different.
Boring shows verbal irony because Eric's sister's hairstyle is not at all boring. | |
Not supported with pagination yet | Suppose Edward decides to eat the crackers. Which result would be a cost? | [
"Edward will get to eat the crackers. The crackers will be healthier than the peach cobbler would have been.",
"Edward will give up the chance to eat the peach cobbler. Edward thinks peach cobbler would have tasted better than crackers will."
] | 1 | Edward is deciding whether to eat crackers or peach cobbler for an afternoon snack. He would like to eat something tasty, but he is also trying to be healthier. | 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 Edward wants or needs:
Edward will give up the chance to eat the peach cobbler. Edward thinks peach cobbler would have tasted better than crackers will. |
What can Anita and Shannon trade to each get what they want? | [
"Anita can trade her tomatoes for Shannon's broccoli.",
"Shannon can trade her broccoli for Anita's oranges.",
"Anita can trade her tomatoes for Shannon's sandwich.",
"Shannon can trade her almonds for Anita's tomatoes."
] | 0 | Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Anita and Shannon open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Anita wanted ... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Anita wanted broccoli in her lunch and Shannon was hoping for tomatoes. Look at the labeled part of the images.
Anita has tomatoes. Shannon 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 does the idiom in this text suggest?
In such an unfamiliar environment, Neil was a fish out of water. | [
"Neil felt out of place.",
"Neil didn't have any friends."
] | 0 | closed choice | grade6 | language science | figurative-language | Literary devices | Interpret figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An idiom is an expression that cannot be understood literally. Its meaning must be learned.
The assignment was a piece of cake. | The text uses an idiom, an expression that cannot be understood literally.
The idiom a fish out of water suggests that Neil felt out of place. A fish out of water is someone out of his or her usual, comfortable environment. | |
Not supported with pagination yet | Using only these supplies, which question can Trent investigate with an experiment? | [
"Do rubber balloons stick to a cotton blanket or a wooden door longer after being rubbed on his hair?",
"Do rubber balloons or foil balloons stick to the wooden door longer after being rubbed on his hair?",
"Do rubber balloons stick to a wooden door or a metal door longer after being rubbed on his hair?"
] | 0 | Trent went to a magic show. The magician rubbed a balloon on her hair and then held the balloon against a wall. When the magician released the balloon, Trent was amazed to see that it stuck to the wall! He wonders what factors affect how well balloons stick to different surfaces. So, he decides to design an experiment.... | 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... | |
Which ocean is highlighted? | [
"the Arctic Ocean",
"the Pacific Ocean",
"the Southern Ocean",
"the Indian Ocean"
] | 1 | closed choice | grade8 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Pacific Ocean. | ||
Not supported with pagination yet | Based on this information, what is this Cepaea snail's phenotype for the shell banding trait? | [
"BB",
"a banded shell"
] | 1 | This passage describes the shell banding trait in Cepaea snails:
In a group of Cepaea snails, some individuals have a banded shell and others have an unbanded shell. In this group, the gene for the shell banding trait has two alleles. The allele B is for a banded shell, and the allele b is for an unbanded shell.
A cer... | closed choice | grade8 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's phenotype for a trait is its observable version of that trait. The Cepaea snail's observable version of the shell banding trait is a banded shell. So, the snail's phenotype for the shell banding trait is a banded shell. |
What is the capital of South Dakota? | [
"Montpelier",
"Augusta",
"Sioux Falls",
"Pierre"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Pierre is the capital of South Dakota. | |||
Not supported with pagination yet | Would you find the word hit on a dictionary page with the following guide words?
hard - hearth | [
"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 hit is not between the guide words hard - hearth, it would not be found on that page. | |
Not supported with pagination yet | Would you find the word aboard on a dictionary page with the following guide words?
afterward - antenna | [
"no",
"yes"
] | 0 | 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 aboard is not between the guide words afterward - antenna, it would not be found on that page. | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
The mayoral candidate was widely viewed as quixotic, so it was no surprise that he lost by a substantial margin. | [
"Greek mythology",
"literature"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion quixotic is literature.
Don Quixote is the main character in Miguel de Cervantes Saavedra's novel of the same name. Quixote cannot see the world as it truly is; in his overly romanticized view, inns are castles and windmills are giants.
The allusion quixotic means naively idealistic. | |
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"Potassium feldspar is formed in nature. It is not made by living things.",
"Burlap is not a pure substance. It is made in a factory.",
"Turquoise is formed in nature. It is a solid."
] | 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.
Turquoise is a mineral.
Potassium feldspar is a mineral.
Burlap is not a pure substance. But all minerals are pure substances.
Burlap is made in a factory. But all minerals are f... | |
Which of these cities is marked on the map? | [
"Pittsburgh",
"Boston",
"Philadelphia",
"Baltimore"
] | 0 | closed choice | grade4 | social science | geography | Cities | Cities of the Northeast | The city is Pittsburgh, Pennsylvania. Philadelphia, Boston, and Baltimore are marked with gray circles on the map below. | |||
Not supported with pagination yet | Which object has the most thermal energy? | [
"a 5-kilogram bucket of water at a temperature of 66°F",
"a 5-kilogram bucket of water at a temperature of 84°F",
"a 5-kilogram bucket of water at a temperature of 78°F"
] | 1 | 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 buckets of water have the same mass but different temperatures. Since the 84°F bucket of water is the hottest, it has the most thermal energy. |
Not supported with pagination yet | Does this passage describe the weather or the climate?
Dean put on an extra pair of socks this morning because it was so cold. | [
"weather",
"climate"
] | 0 | Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade3 | natural science | earth-science | Weather and climate | 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.
Dean put on an extra pair of socks this morning because it was so cold.
This passage tells you about the temperature this morning where Dean lives. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Not supported with pagination yet | Using only these supplies, which question can Jayden investigate with an experiment? | [
"Which of the three types of tomato seeds sprouts the fastest?",
"Which type of soil will cause a certain kind of tomato plant to grow the most fruit?",
"Does a certain kind of tomato plant grow taller when planted in a clay pot or in a plastic pot?"
] | 0 | Jayden and his classmates are growing tomato plants in the school garden. He wonders what factors affect how tomato plants grow. So, he decides to design an experiment. He has the following supplies available:
three different types of tomato seeds
one bag of potting soil
five identical clay pots
water | closed choice | grade7 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
Which country is highlighted? | [
"Palau",
"Tonga",
"Australia",
"Samoa"
] | 3 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Samoa. | |||
Which of the following could Patty'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... | ||
Select the organism in the same genus as the barred owl. | [
"Falco novaeseelandiae",
"Haliaeetus pelagicus",
"Strix aluco"
] | 2 | This organism is a barred owl. Its scientific name is Strix varia. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A barred owl's scientific name is Strix varia. The first word of its scientific name is Strix.
Falco novaeseelandiae is in the genus Falco. The first word of its scientific name is Falco. So, Falco novaeseelandiae and Strix varia are not in the same genus.
Strix aluco is in the genus Strix. The first word of its scient... | |
Select the true statement. | [
"Eye color is an example of a gene.",
"Genes are passed down from parents to offspring."
] | 1 | Look at the image and read the text. Then, answer the question.
variation in the human eye color trait
All organisms inherit certain traits from their parents. Information about these inherited traits is found in genes. Genes are pieces of hereditary material that are passed from parents to offspring. An organism's gen... | closed choice | grade6 | natural science | biology | Genes to traits | Genes, proteins, and traits: understanding the genetic code | Eye color is an example of a gene.
An organism's eye color is affected by its genes. But eye color is not a gene. Eye color is a trait, which is an observable characteristic of an organism.
Genes affect traits.
Genes contain information about inherited traits.
Genes are passed down from parents to offspring.
When an or... | ||
Is a drum a solid, a liquid, or a gas? | [
"a liquid",
"a gas",
"a solid"
] | 2 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a 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... | A drum is a solid. A solid has a size and shape of its own.
A drum keeps its shape even when you hit it. | ||
Which of the following could Layla and Jane's test show? | [
"if a new batch of concrete was firm enough to use",
"if the concrete from each batch took the same amount of time to dry"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | What do these two changes have in common?
an antacid tablet reacting with water
a penny tarnishing | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 3 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
An antacid tablet reacting with water is a chemical change. When the tablet touches water, the type of matter in the tablet changes and carbon dioxide gas is released. This gas makes the water fizz.
Metal turning less shiny over time is called tarnishing. A penny tarnishing is a chemica... | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample B",
"sample A"
] | 2 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade8 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, but the particles in sample A have a higher average speed than the particles in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B.
Because the particles in sample A have the higher average kinetic energy, sampl... | |
Not supported with pagination yet | Which organ allows nutrients from digested food to be absorbed into the body's blood stream? | [
"small intestine",
"trachea",
"esophagus",
"skin"
] | 0 | closed choice | grade4 | natural science | biology | Animals | Human organs and their functions | |||
Is native gold a mineral? | [
"yes",
"no"
] | 0 | Native gold has the following properties:
fixed crystal structure
solid
found in nature
not made by living things
made of the metal gold | 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... | Native gold has all the properties of a mineral. So, native gold is a mineral. | |
Which of the following organisms is the secondary consumer in this food web? | [
"persimmon tree",
"swallowtail caterpillar",
"beaver",
"black racer"
] | 3 | Below is a food web from Shenandoah National Park, a forest ecosystem in Virginia.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade7 | 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 beaver has an arrow pointing to it from the silver maple. The silver maple is not... | |
Not supported with pagination yet | What is the mass of a full bag of groceries? | [
"10 ounces",
"10 pounds",
"10 tons"
] | 1 | Select the best estimate. | closed choice | grade4 | 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 bag of groceries is 10 pounds.
10 ounces is too light and 10 tons is too heavy. |
Select the chemical formula for this molecule. | [
"BF",
"B3F",
"B2F2",
"BF3"
] | 3 | closed choice | grade7 | natural science | chemistry | Atoms and molecules | Identify chemical formulas for ball-and-stick models | Every substance around you is made up of atoms. Atoms can link together to form molecules. The links between atoms in a molecule are called chemical bonds. Different molecules are made up of different chemical elements, or types of atoms, bonded together.
Scientists use both ball-and-stick models and chemical formulas ... | B is the symbol for boron. According to the legend, boron atoms are shown in beige. F is the symbol for fluorine. According to the legend, fluorine atoms are shown in light green. This ball-and-stick model shows a molecule with one boron atom and three fluorine atoms. The chemical formula will contain the symbols B and... | ||
Which animal's limbs are also adapted for climbing trees? | [
"manatee",
"Sumatran orangutan"
] | 1 | White-cheeked gibbons live in the forests of Southeast Asia. Their limbs are adapted for climbing trees.
Figure: white-cheeked gibbon. | 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 white-cheeked gibbon.
The white-cheeked gibbon uses its long limbs to reach branches while climbing. It uses its fingers and toes to grab the branches.
Now look at each animal. Figure out which animal has a similar adaptation.
The Sumatran orangutan has long limbs with fingers and toes. Its l... | |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"After Tyler graduates, he plans to travel around Europe with his brother.",
"Tyler plans to travel around Europe with his brother after he graduates."
] | 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 he could refer to Tyler or his brother.
Tyler plans to travel around Europe with his brother after he graduates.
The second answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning i... | |
Not supported with pagination yet | What is the mass of a bicycle? | [
"12 grams",
"12 kilograms"
] | 1 | Select the better estimate. | closed choice | grade5 | 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 bicycle is 12 kilograms.
12 grams is too light. |
What is the name of the colony shown? | [
"South Carolina",
"Pennsylvania",
"Indiana",
"Rhode Island"
] | 0 | closed choice | grade5 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is South Carolina. | |||
Not supported with pagination yet | Which change better matches the sentence?
Melted rock comes out of a crack in Earth's surface. | [
"volcanic eruption",
"erosion"
] | 0 | closed choice | grade2 | natural science | earth-science | Earth events | Classify changes to Earth's surface | |||
Which property do these three objects have in common? | [
"stretchy",
"scratchy",
"colorful"
] | 1 | Select the best answer. | closed choice | grade3 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. | Look at each object.
For each object, decide if it has that property.
A stretchy object gets longer when you pull on it. The cactus and the sandpaper are not stretchy.
A colorful object has one or more bright colors. The potato sack and the sandpaper are not colorful.
A scratchy object is rough and itchy against your s... | |
Not supported with pagination yet | Select the bird. | [
"shoebill",
"coral snake",
"poison dart frog",
"bison"
] | 0 | closed choice | grade5 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds have feathers, two wings, and a beak. | A shoebill is a bird. It has feathers, two wings, and a beak.
Shoebills live in tropical East Africa. Shoebills get their name from their shoe-shaped beaks.
A bison is a mammal. It has fur and feeds its young milk.
Male bison have horns. They can use their horns to defend themselves.
A coral snake is a reptile. It has ... | |
Not supported with pagination yet | Complete the statement.
Rhenium is (). | [
"a compound",
"an elementary substance"
] | 1 | Rhenium is a rare and expensive metal used to make jet engines. The chemical formula for rhenium is Re. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using chemical formulas | Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For s... | You can tell whether rhenium is an elementary substance or a compound by counting the number of symbols in its chemical formula. A symbol contains either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for rhenium is Re. This formula contains one symbol: Re. So, the... |
Not supported with pagination yet | Which closing is correct for a letter? | [
"See You Soon,\nFelix",
"See you soon,\nFelix"
] | 1 | closed choice | grade4 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Not supported with pagination yet | What kind of sentence is this?
How many articles did Eli write before his publisher offered him a book contract? | [
"interrogative",
"imperative",
"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 asks something, and it ends with a question mark. It is an interrogative sentence. | |
What is the capital of Nevada? | [
"Denver",
"Detroit",
"Laramie",
"Carson City"
] | 3 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Carson City is the capital of Nevada. | |||
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Mr. Arnold has a reputation as a Scrooge, so our club has stopped asking him for donations. | [
"a fable",
"literature"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion Scrooge is literature.
The novella A Christmas Carol, by Charles Dickens, tells the story of the penny-pinching and bitter Ebenezer Scrooge, who values money more than people.
The allusion Scrooge means a person who isn't generous. | |
Not supported with pagination yet | Which text uses the word peruse in its traditional sense? | [
"The researcher diligently perused the ancient manuscript, taking care not to damage the brittle pages as he turned them.",
"The researcher quickly perused the manuscript descriptions in the collection database until he found the one he was looking for."
] | 0 | closed choice | grade10 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The second text uses peruse in its traditional sense: to examine in detail.
The researcher diligently perused the ancient manuscript, taking care not to damage the brittle pages as he turned them.
The first text uses peruse in its nontraditional sense: to look through in a casual manner.
The researcher quickly perused ... | |
Which country is highlighted? | [
"the Marshall Islands",
"Palau",
"Papua New Guinea",
"the Federated States of Micronesia"
] | 3 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | |||
Which of these continents does the equator intersect? | [
"Antarctica",
"Asia",
"Australia"
] | 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 equator is the line at 0° latitude. It intersects Asia. It does not intersect Australia or Antarctica. | ||
Is the following statement about our solar system true or false?
Three-quarters of the planets are larger than Venus. | [
"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 there are five planets larger than Venus: Earth, Jupiter, Saturn, Uranus, and Neptune. There are eight planets total. Five-eighths is less than three-quarters. So, five-eighths of the planets are larger than Venus. | |
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 greater in Pair 1.",
"The magnitude of the magnetic force is greater in Pair 2."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | closed choice | grade6 | 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 2 attract. The magnets in Pair 1 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 | What do these two changes have in common?
burning food on a stove
grilling a hamburger | [
"Both are only physical changes.",
"Both are caused by heating.",
"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.
Burning food on a stove is a chemical change. When the food burns, the type of matter in it changes. The food turns black and gives off smoke.
Grilling a hamburger is a chemical change. Heat from the grill causes the matter in the meat to change. Cooked meat and raw meat are different t... | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Aiden has naturally brown hair. | [
"acquired",
"inherited"
] | 1 | Hint: Some people dye their hair. But this does not change their natural hair color. | 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... | Humans do not choose their natural hair color. Instead, children get their natural hair color from their parents. So, Aiden's hair color is an inherited trait. |
Not supported with pagination yet | Which figure of speech is used in this text?
The Winchester Grill offers a delicious vegetarian sausage entr̩e served with mashed sweet potatoes and arugula salad. | [
"hyperbole",
"oxymoron"
] | 1 | closed choice | grade9 | language science | figurative-language | Literary devices | Classify figures of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses an oxymoron, a joining of two seemingly contradictory terms.
Vegetarian sausage is a contradiction, because vegetarian food has no meat, and sausages are made with meat. | |
Not supported with pagination yet | Choose the poem that uses onomatopoeia. | [
"There's not a day in all the year\nBut holds some hidden pleasure,\nAnd looking back, joys oft appear\nTo brim the past's wide measure.\nBut blessings are like friends, I hold.",
"Light that jingles like anklet chains\nOn bevies of little lithe twinkling feet,\nOr clingles in myriad vibrations\nLike trillions of... | 1 | From Ella Wheeler Wilcox, "Thanksgiving" and from Lola Ridge, "Manhattan" | 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 onomatopoeia. It uses language that sounds like what it talks about.
Vases shattering. |
Identify the question that Marvin'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.
Marvin 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 | Which figure of speech is used in this text?
Lola gazed at the ancient pug that seemed to sleep all day and noted, "You're an energetic puppy!" | [
"verbal irony",
"pun"
] | 0 | closed choice | grade8 | language science | figurative-language | Literary devices | Classify figures of speech | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses verbal irony, which involves saying one thing but implying something very different.
An energetic puppy shows verbal irony because an old, exhausted dog is far from an energetic puppy. | |
Not supported with pagination yet | Each bus takes the same amount of time to stop. Which school bus needs a larger force to come to a stop? | [
"a school bus carrying 600 pounds",
"a school bus carrying 750 pounds"
] | 1 | Kids from two different schools are riding their school buses home. The buses are the same. They are going the same speed. But different numbers of kids are riding in each bus. | closed choice | grade2 | natural science | physics | Force and motion | How do mass and force affect motion? | A force is a push or a pull.
A force can make an object start moving or stop an object that is moving. A force can also make an object speed up, slow down, or change direction.
Forces can be different sizes.
Think about trying to move a heavy object and a light object. Imagine you want to move them at the same speed. Y... | Look for the school bus that is heavier.
A school bus carrying 750 pounds is heavier than a school bus carrying 600 pounds. So, the school bus carrying 750 pounds needs a larger force to come to a stop in the same amount of time as the other bus. |
Not supported with pagination yet | Which of the following contains a vague pronoun reference? | [
"Tucker bought a program for the opera without realizing that the program was in Russian.",
"Tucker bought a program for the opera without realizing that it was in Russian."
] | 1 | closed choice | grade7 | language science | writing-strategies | Pronouns and antecedents | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The first answer choice contains a vague pronoun reference. The pronoun it could refer to the program or the opera.
The second answer choice shows a possible correction for the vague pronoun reference. It has been replaced with the program.
Tucker bought a program for the opera without realizing that the program was in... | |
What is the capital of Alaska? | [
"Seattle",
"Juneau",
"Saint Paul",
"Anchorage"
] | 1 | 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 equator intersect? | [
"Antarctica",
"Europe",
"Asia"
] | 2 | closed choice | grade5 | 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 equator is the line at 0° latitude. It intersects Asia. It does not intersect Antarctica or Europe. | ||
Not supported with pagination yet | What do these two changes have in common?
mixing sand and gravel
water evaporating from a lake | [
"Both are only physical changes.",
"Both are chemical 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.
Mixing sand and gravel is a physical change. Together, the sand and gravel make a mixture. But making this mixture does not form a different type of matter.
Water evaporating from a lake is a change of state. So, it is a physical change. The liquid changes into a gas, but a different ty... | |
Which animal's legs are also adapted for wading? | [
"white tern",
"flamingo"
] | 1 | Great egrets live near marshes, rivers, and lakes. They eat fish, frogs, insects, and small reptiles that live in shallow water. Great egrets hunt their prey by walking through water, or wading.
The 's legs are adapted for wading. They are lightweight and keep the bird's body above the water.
Figure: great egret. | closed choice | grade5 | 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 great egret.
Long legs help the great egret keep its body above the surface of the water while wading. Thin legs are easier to move through the water.
Now look at each animal. Figure out which animal has a similar adaptation.
The flamingo has long, thin legs. Its legs are adapted for wading.
... | |
Not supported with pagination yet | Which object has more thermal energy? | [
"a bowl of oatmeal at a temperature of 105°F",
"a bowl of oatmeal at a temperature of 75°F"
] | 0 | The objects are identical except for their temperatures. | closed choice | grade3 | natural science | physics | Heat and thermal energy | How is temperature related to thermal energy? | All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter move faster, the temperature goes up. The matter now has both ... | The two bowls of oatmeal have the same mass but different temperatures. Since the 105°F bowl of oatmeal is hotter than the 75°F bowl of oatmeal, it has more thermal energy. |
Not supported with pagination yet | Would you find the word pennies on a dictionary page with the following guide words?
playful - pull | [
"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 pennies is not between the guide words playful - pull, it would not be found on that page. | |
Not supported with pagination yet | What does this Works Cited entry indicate about the cited work?
"Mango Nutrition." www.mango.org. National Mango Board, 2014. Web. 10 May 2015. | [
"It is an email.",
"It was accessed on May 10, 2015.",
"It was published by Mango Nutrition."
] | 1 | 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:
"Mango Nutrition." www.mango.org. National Mango Board, 2014. Web. 10 May 2015.
You can tell that the cited work was accessed on May 10, 2000, by looking at the date of access, which appears after the medium of publication. | |
Not supported with pagination yet | Is the following trait inherited or acquired?
Roxanne can ride a motorcycle. | [
"inherited",
"acquired"
] | 1 | closed choice | grade5 | natural science | biology | Traits and heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | People are not born knowing how to ride a motorcycle. Instead, many people learn how to ride. So, riding a motorcycle is an acquired trait. | |
Not supported with pagination yet | What information supports the conclusion that Jon acquired this trait? | [
"Some scars fade more quickly than others.",
"Jon's scar was caused by an accident. He cut his arm when he fell off his bicycle."
] | 1 | Read the description of a trait.
Jon has a scar on his right arm. | closed choice | grade6 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Not supported with pagination yet | Does this passage describe the weather or the climate?
Joy lives in a town with hot summers and freezing cold winters. | [
"climate",
"weather"
] | 0 | Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place. | closed choice | grade3 | natural science | earth-science | Weather and climate | 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.
Joy lives in a town with hot summers and freezing cold winters.
This passage tells you about the usual temperatures where Joy lives. It does not describe what the weather is like on a particular day. So, this passage describes the climate. |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Tanvi anticipated that the free makeover her friend was promising would turn out to be a Trojan horse. | [
"Greek mythology",
"British history"
] | 0 | closed choice | grade8 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion Trojan horse is Greek mythology.
In Greek mythology, the Greek army tricks the Trojan army into taking a large wooden horse into their carefully guarded city. The horse turns out to be filled with Greek warriors who, once inside the city of Troy, open the gates to the Greek army waiting outsi... | |
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Bobby persisted despite his friends' attempts to tell him that this was a Gordian knot. | [
"U.S. history",
"ancient legend"
] | 1 | closed choice | grade12 | 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 Gordian knot is ancient legend.
According to legend, Alexander the Great used his sword to slash an intricate knot by which a chariot was tied to a pole in the city of Gordium.
The allusion Gordian knot means a highly complex problem. | |
In this food chain, the giant green anemone is a consumer. Why? | [
"It makes its own food.",
"It eats another living thing."
] | 1 | This diagram shows a food chain from Monterey Bay, an ocean ecosystem on the coast of California. | closed choice | grade3 | natural science | biology | Ecosystems | Identify roles in food chains | Every living thing needs food to stay alive. Living things get their food in different ways. A food chain shows how living things in an ecosystem get their food.
Producers make their own food. Many producers use carbon dioxide, water, and sunlight to make sugar. This sugar is food for the producer.
Consumers eat other ... | In this food chain, the giant green anemone is a consumer because it eats another living thing. The giant green anemone in this food chain eats the California sea slug. | |
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."
] | 2 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes. | 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 2 attract. The magnets in Pair 1 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 ... | |
Which ocean is highlighted? | [
"the Indian Ocean",
"the Southern Ocean",
"the Atlantic Ocean",
"the Pacific Ocean"
] | 3 | closed choice | grade7 | social science | geography | Physical Geography | Oceans and continents | Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean. | This is the Pacific Ocean. | ||
Not supported with pagination yet | Choose the poem that uses repetition. | [
"The sun's heat will give out in ten million years more—\nAnd he worried about it.\nIt will sure give out then, if it doesn't before—\nAnd he worried about it.",
"I'm not a chicken; I have seen\nFull many a chill September,\nAnd though I was a youngster then,\nThat gale I well remember."
] | 0 | From Oliver Wendell Holmes, "The September Gale" and from Sam Walter Foss, "He Worried about It" | closed choice | grade4 | language science | reading-comprehension | Poetry elements | Identify elements of poetry | Poetry is a special kind of writing. It has many elements that make it different from ordinary writing. Knowing these elements can help you talk about poetry, understand it better, and enjoy it more.
A poem rhymes when it has a pattern of words that end in the same sound.
End rhyme is when the rhymes appear at the end ... | This poem uses repetition. It repeats words, phrases, or lines.
And he worried about it.
And he worried about it. |
Which better describes the Lost City ecosystem? | [
"It has water at the bottom of the ocean. It also has organisms that crawl or stick to the ground.",
"It has no sunlight. It also has many large swimming organisms."
] | 0 | Figure: Lost City.
Lost City is a deep sea ecosystem in the mid-Atlantic Ocean. | closed choice | grade3 | natural science | biology | Ecosystems | Describe ecosystems | An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other:
the pattern of weather, or climate
the type of soil or water
the organisms that live there | The deep sea is a type of ecosystem. Deep sea ecosystems have the following features: water at the bottom of the ocean, no sunlight, and organisms that crawl or stick to the ground. So, Lost City has water at the bottom of the ocean. It also has organisms that crawl or stick to the ground. | |
Which animal's mouth is also adapted to tear through meat? | [
"blackbuck",
"Eurasian lynx"
] | 1 | Cougars are carnivores, or meat eaters. They eat mammals such as deer and rabbits. The 's mouth is adapted to tear through meat.
Figure: cougar. | closed choice | grade4 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the cougar.
The cougar has a large mouth and sharp teeth. Its mouth is adapted to tear through meat. The cougar uses its large mouth to grab its prey. It uses its sharp teeth to cut up the meat of the prey into pieces it can swallow.
Now look at each animal. Figure out which animal has a similar ... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Free speech is good not just for the individual, but for all of society. After all, it's in the interest of the community that everyone should be at liberty to express his or her beliefs. | [
"appeal to nature: the assumption that natural things are always good",
"ad hominem: an attack against the person making the argument, rather than the argument itself",
"circular reasoning: an argument that supports a claim with the claim itself"
] | 2 | closed choice | grade11 | 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 free speech is good for society because society is better off when people have free speech. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning. | |
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
bind - bread | [
"boil",
"basket"
] | 0 | 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 boil is between the guide words bind - bread, it would be found on that page. | |
Not supported with pagination yet | Which graduation announcement is more formal? | [
"We are proud to announce the graduation of Lee Ortega.",
"Lee Ortega is graduating, and we couldn't be more proud!"
] | 0 | closed choice | grade11 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The second graduation announcement is more formal. It uses more ceremonious language (proud to announce). The other graduation announcement uses more conversational language (we couldn't be more proud!). | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"neither; the samples have the same temperature",
"sample B",
"sample A"
] | 1 | The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles. | closed choice | grade6 | natural science | physics | Particle motion and energy | Identify how particle motion affects temperature and pressure | The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of... | Each particle in the two samples has the same mass, but the particles in sample B have a higher average speed than the particles in sample A. So, the particles in sample B have a higher average kinetic energy than the particles in sample A.
Because the particles in sample B have the higher average kinetic energy, sampl... | |
Not supported with pagination yet | What is the mass of a small candy bar? | [
"2 pounds",
"2 ounces",
"2 tons"
] | 1 | Select the best estimate. | closed choice | grade4 | 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 small candy bar is 2 ounces.
2 pounds and 2 tons are both too heavy. |
Select the statement that is true about Sydney's average monthly precipitation. | [
"More precipitation falls in June than in December.",
"Each month has about the same amount of precipitation.",
"Less precipitation falls in February than in November."
] | 0 | Use the graph to answer the question below. | closed choice | grade3 | natural science | earth-science | Weather and climate | Use climate data to make predictions | Scientists record climate data from places around the world. Precipitation, or rain and snow, is one type of climate data.
A bar graph can be used to show the average amount of precipitation each month. Months with taller bars have more precipitation on average. | To describe the average precipitation trends in Sydney, look at the graph.
Choice "Feb" is incorrect.
Choice "Jun" is incorrect.
Choice "Nov" is incorrect.
Choice "Dec" is incorrect.
Choice "Less precipitation falls in February than in November." is incorrect.
The average precipitation in February is higher, not lower,... | |
Look at the models of molecules below. Select the elementary substance. | [
"propane",
"2-chloroethanol",
"nitrogen"
] | 2 | closed choice | grade6 | natural science | chemistry | Atoms and molecules | Identify 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 ... | |||
Not supported with pagination yet | What does the hyperbole in this text suggest?
When you smile
The whole world stops and stares for a while
—Bruno Mars, "Just the Way You Are" | [
"This person has an attention-getting smile.",
"People always stare at this person's smile."
] | 0 | 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 the whole world stops and stares for a while suggests that this person has an attention-getting smile. Her smile does not literally cause all the people on earth to stop in their tracks. | |
Will these magnets attract or repel each other? | [
"attract",
"repel"
] | 1 | 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 north pole of one magnet is closest to the north pole of the other magnet. Like poles repel. So, these magnets will repel each other. | |
Which country is highlighted? | [
"Nauru",
"the Federated States of Micronesia",
"Papua New Guinea",
"Samoa"
] | 1 | closed choice | grade7 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is the Federated States of Micronesia. | |||
Select the organism in the same species as the comet moth. | [
"Acanthaster planci",
"Sphodromantis viridis",
"Argema mittrei"
] | 2 | This organism is a comet moth. Its scientific name is Argema mittrei. | 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 comet moth's scientific name is Argema mittrei.
Sphodromantis viridis does not have the same scientific name as a comet moth. So, Argema mittrei and Sphodromantis viridis are not in the same species.
Argema mittrei has the same scientific name as a comet moth. So, these organisms are in the same species.
Acanthaster ... | |
Not supported with pagination yet | What is the volume of a water balloon? | [
"15 cups",
"15 fluid ounces",
"15 gallons"
] | 1 | Select the best estimate. | closed choice | grade5 | natural science | units-and-measurement | Units and measurement | Choose customary 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 customary units, volume may be written in units of fluid ounces, cups,... | The best estimate for the volume of a water balloon is 15 fluid ounces.
15 cups and 15 gallons are both too much. |
Which of the following organisms is the decomposer in this food web? | [
"sea cucumber",
"kelp",
"sea otter",
"black rockfish"
] | 0 | Below is a food web from an ocean ecosystem in Monterey Bay, off the coast of California.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem. | closed choice | grade8 | natural science | biology | Ecological interactions | Interpret food webs I | A food web is a model.
A food web shows where organisms in an ecosystem get their food. Models can make things in nature easier to understand because models can represent complex things in a simpler way. If a food web showed every organism in an ecosystem, the food web would be hard to understand. So, each food web sho... | Decomposers help break down dead organisms into simpler matter, such as nutrients. These nutrients can then help plants and other organisms grow. In a food web, there is an arrow pointing from another organism to a decomposer. There are no arrows pointing from a decomposer to another organism.
The kelp has arrows point... | |
What is the capital of New York? | [
"Saint Louis",
"Buffalo",
"Albany",
"Hartford"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Albany is the capital of New York. | |||
Not supported with pagination yet | Which egg has less thermal energy? | [
"the colder egg",
"the hotter egg"
] | 0 | Two eggs 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 eggs are made of the same material and have the same mass. So, the colder egg has less thermal energy. |
Not supported with pagination yet | What information supports the conclusion that Jenna inherited this trait? | [
"Jenna's biological parents have red hair. Jenna also has red hair.",
"Jenna's neighbor also has straight hair.",
"Jenna's biological mother often wears her straight hair in a ponytail."
] | 2 | Read the description of a trait.
Jenna has straight hair. | closed choice | grade8 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
Which animal's mouth is also adapted to get insects out of burrows? | [
"aardvark",
"clouded leopard"
] | 0 | Tamanduas eat insects such as ants and termites. These insects often live in holes called burrows. The 's mouth is adapted to get insects out of burrows.
Figure: tamandua. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's mouth is one example of an adaptation. Animals' mouths can be adapted in different ways. For example, a large mouth with sharp teeth might help an animal tear ... | Look at the picture of the tamandua.
A tube-shaped snout helps the tamandua reach into a burrow. A long, sticky tongue helps it catch the insects.
Now look at each animal. Figure out which animal has a similar adaptation.
The aardvark has a tube-shaped mouth and a long, sticky tongue. Its mouth is adapted to eat insect... | |
What is the capital of Pennsylvania? | [
"Philadelphia",
"Hartford",
"Springfield",
"Harrisburg"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Harrisburg is the capital of Pennsylvania. | |||
What is the name of the colony shown? | [
"Wisconsin",
"South Carolina",
"Maryland",
"North Carolina"
] | 3 | closed choice | grade4 | social science | us-history | English colonies in North America | Identify the Thirteen Colonies | The colony is North Carolina. | |||
Not supported with pagination yet | What is the source of the allusion in the sentence below?
Kendall warned her youngest son not to cry wolf while wrestling with his older brother. | [
"a fable",
"Greek mythology"
] | 0 | closed choice | grade10 | language science | figurative-language | Literary devices | Recall the source of an allusion | An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
Here, Lila alludes to the fairy tale "Cinderella," in which C... | The source of the allusion cry wolf is a fable.
In the fable "The Boy Who Cried Wolf," a shepherd boy repeatedly tricks people in his village by falsely claiming that a wolf is coming to eat his flock. When a wolf actually comes and the boy cries for help, nobody believes him or comes to his aid.
The allusion cry wolf ... | |
Which of the following could Brody's test show? | [
"if the weather station would work when the temperature was 50°C",
"how well the weather station would work when it was windy"
] | 0 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade6 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | ||
Not supported with pagination yet | Select the one substance that is not a mineral. | [
"Molasses is made by humans. It is not a pure substance.",
"Pyrite is formed in nature. It is a pure substance.",
"Sphalerite is formed in nature. It is a pure substance."
] | 0 | 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.
Pyrite is a mineral.
Sphalerite is a mineral.
Molasses is made by humans. But minerals are not made by living things.
Molasses is not a pure substance. But all minerals are pure ... | |
Not supported with pagination yet | Which excerpt from a student essay is more formal? | [
"In this day and age, nearly all classrooms have access to technology.",
"A lot of kids use computers at school nowadays."
] | 0 | closed choice | grade11 | language science | writing-strategies | Audience, purpose, and tone | Which text is most formal? | Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is... | The first excerpt from a student essay is more formal. It uses more elevated language (in this day and age, have access to technology). The other excerpt uses imprecise language (a lot, nowadays) and sounds more conversational. | |
Which is the main persuasive appeal used in this ad? | [
"ethos (character)",
"logos (reason)",
"pathos (emotion)"
] | 1 | closed choice | grade7 | language science | writing-strategies | Persuasive strategies | Identify appeals to ethos, pathos, and logos in advertisements | The purpose of an advertisement is to persuade people to do something. To accomplish this purpose, advertisements use three types of persuasive strategies, or appeals:
Appeals to ethos, or character, show that the writer or speaker is trustworthy or is an authority on a subject. An ad that appeals to ethos might do one... | The ad appeals to logos, or reason. It lists the specific cleaning actions this product performs. | ||
What is the capital of California? | [
"Juneau",
"Cheyenne",
"San Francisco",
"Sacramento"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify the 50 state capitals | Sacramento is the capital of California. |
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.