question stringlengths 15 862 | choices list | answer int8 0 3 | hint stringlengths 0 815 | task stringclasses 3
values | grade stringclasses 12
values | subject stringclasses 3
values | topic stringclasses 25
values | category stringlengths 5 35 | skill stringlengths 8 100 | lecture stringlengths 0 3.08k | solution stringlengths 0 1.36k |
|---|---|---|---|---|---|---|---|---|---|---|---|
Which greeting is correct for a letter? | [
"Dear Grandma Carly,",
"Dear grandma Carly,"
] | 0 | closed choice | grade3 | language science | punctuation | Formatting | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second greeting is correct:
Its first word is capitalized, and it ends with a comma. Grandma Carly is capitalized because it is a proper noun. | |
What information supports the conclusion that Jeffrey inherited this trait? | [
"Jeffrey likes to wear a blue sweater to match his blue eyes.",
"Jeffrey's mother has blue eyes. She passed this trait down to Jeffrey."
] | 1 | Read the description of a trait.
Jeffrey has blue eyes. | closed choice | grade5 | natural science | biology | Traits and heredity | 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 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... | |
How long is a tennis court? | [
"80 feet",
"80 yards"
] | 0 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that a pencil is 8 long. You might be thinking, 8 what? Is the pencil 8 inches long? 8 feet? 8 miles?
The number 8 on its own does not give you much information about the len... | The better estimate for the length of a tennis court is 80 feet.
80 yards is too long. |
Complete the sentence.
In this chemical reaction, nitric oxide is a (). | [
"reactant",
"product"
] | 1 | This passage describes a chemical reaction. Read the passage. Then, follow the instructions below.
Did you know that lightning helps provide nutrients to plants on Earth? When lightning strikes, the air around it becomes extremely hot. This leads to the formation of nitric oxide from the nitrogen and oxygen gases in th... | 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 nitric oxide in this chemical reaction.
Did you know that lightning helps provide nutrients to plants on Earth? When lightning strikes, the air around it becomes extremely hot. This leads to the formation of nitric oxide from the nitrogen an... |
Which word would you find on a dictionary page with the following guide words?
general - gossip | [
"glare",
"grind"
] | 0 | closed choice | grade8 | 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 glare is between the guide words general - gossip, it would be found on that page. | |
What is the volume of a bowl of soup? | [
"270 liters",
"270 milliliters"
] | 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 bowl of soup is 270 milliliters.
270 liters is too much. |
Which object has the least thermal energy? | [
"a blueberry muffin at a temperature of 26°C",
"a blueberry muffin at a temperature of 18°C",
"a blueberry muffin at a temperature of 25°C"
] | 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 slow down, the temperature goes down. The matter now has both ... | All three blueberry muffins have the same mass but different temperatures. Since the 18°C muffin is the coldest, it has the least thermal energy. |
Based on this information, what is Toriel's genotype for the horns gene? | [
"Hh",
"not having horns"
] | 0 | In a group of cows, some individuals have horns and others do not. In this group, the gene for the horns trait has two alleles. The allele H is for not having horns, and the allele h is for having horns.
Toriel, a cow from this group, does not have horns. Toriel has one allele for not having horns and one allele for ha... | 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. Toriel has one allele for not having horns (H) and one allele for having horns (h). So, Toriel's genotype for the horns gene is Hh. |
Which tense does the sentence use?
Mom will pitch the ball to Jonathan. | [
"future tense",
"past tense",
"present tense"
] | 0 | 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, pitch. The verb tells you about something that is going to happen. | |
Which closing is correct for a letter? | [
"Thank you,\nEstelle",
"Thank You,\nEstelle"
] | 0 | 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 first closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Based on this information, what is Lollipop's phenotype for the fur color trait? | [
"brown fur",
"black fur"
] | 0 | In a group of rabbits, some individuals have black fur and others have brown fur. In this group, the gene for the fur color trait has two alleles. The allele for brown fur (f) is recessive to the allele for black fur (F).
Lollipop is a rabbit from this group. Lollipop has the homozygous genotype ff for the fur color ge... | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Lollipop's genotype for the fur color gene is ff. Lollipop's genotype of ff has only f alleles. The f allele is for brown fur. So, Lollipop's phenotype for the fur color trait must be brown fur.
To check this answer, consider whether Lollipop's alleles are dominant or recessive. The allele for brown fur (f) is recessiv... |
Jim starts to pull the wagon across the yard. To move the wagon at the same speed each time, which friend does Jim need to pull with a larger force? | [
"a friend who weighs 33 pounds",
"a friend who weighs 30 pounds"
] | 0 | Jim gives two friends a ride in his wagon. One friend sits in the wagon at a time. | 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 friend who is heavier.
A friend who weighs 33 pounds is heavier than a friend who weighs 30 pounds. So, to move the wagon at the same speed each time, Jim needs to use a larger force to start moving the wagon with a friend who weighs 33 pounds. |
Suppose Mateo decides to plant the geraniums. Which result would be a cost? | [
"He will save some space. The geraniums will use up less space than the magnolia tree would have used up.",
"Mateo will give up the chance to look at the magnolia tree. He thinks it would have looked more beautiful than the geraniums."
] | 1 | Mateo is deciding whether to plant geraniums or a magnolia tree in his backyard. He wants to make his backyard more beautiful. But he also wants to leave space for doing fun things. | closed choice | 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 Mateo wants or needs:
Mateo will give up the chance to look at the magnolia tree. He thinks it would have looked more beautiful than the geraniums. |
The shopper lifts each bag at the same speed. Which bag is lifted with a larger force? | [
"a bag holding 6 pounds of food",
"a bag holding 8 pounds of food"
] | 1 | A shopper is buying food at the store. He fills two shopping bags. The shopping bags are the same size and shape. | 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 shopping bag that is heavier.
A shopping bag holding 8 pounds of food is heavier than a shopping bag holding 6 pounds of food. So, the bag holding 8 pounds needs a larger force to start moving upward at the same speed as the other bag. |
Which bowl of cereal has a higher temperature? | [
"the bowl of cereal with more thermal energy",
"the bowl of cereal with less thermal energy"
] | 0 | Two bowls of cereal are identical except for their thermal energies. | closed choice | grade5 | natural science | physics | Heat and thermal energy | How are temperature and mass related to thermal energy? | Matter is made of tiny particles called atoms. Atoms are always moving.
The energy of moving atoms is called thermal energy. The total amount of thermal energy in matter depends on three things: the type of matter, the amount of matter, and how fast the atoms are moving.
Temperature measures how hot or cold matter is. ... | The two bowls of cereal are made of the same material and have the same mass. So, the bowl of cereal with more thermal energy has a higher temperature. |
Which closing is correct for a letter? | [
"your student,\nHenry",
"Your student,\nHenry"
] | 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. | |
Which object has the most thermal energy? | [
"a 5-kilogram brick at a temperature of 134°C",
"a 5-kilogram brick at a temperature of 137°C",
"a 5-kilogram brick at a temperature of 130°C"
] | 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 bricks have the same mass but different temperatures. Since the 137°C brick is the hottest, it has the most thermal energy. |
Which figure of speech is used in this text?
Now is the time to make real the promises of democracy. Now is the time to rise from the dark and desolate valley of segregation to the sunlit path of racial justice. Now is the time to lift our nation from the quicksands of racial injustice to the solid rock of brotherhood.... | [
"antithesis",
"anaphora"
] | 1 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses anaphora, the repetition of the same word or words at the beginning of several phrases or clauses.
King repeats the words now is the time at the beginning of each sentence. | |
Select the living thing. | [
"crayon",
"hockey puck",
"pepper tree",
"street lamp"
] | 2 | closed choice | grade4 | natural science | biology | Classification | Identify living and nonliving things | All living things are made up of cells. Plants, animals, and some fungi have many cells. Other living things are made up of just one cell.
All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. They use energy from food to grow and change.
All... | A street lamp is not a living thing.
Street lamps do not have all of the traits of living things. They do not grow or respond to their environment. They do not need food or water.
A crayon is not a living thing.
Crayons do not have all of the traits of living things. They do not grow or respond to their environment. Th... | |
Hanukkah is a holiday in which religion? | [
"Islam",
"Judaism",
"Hinduism",
"Christianity"
] | 1 | closed choice | grade3 | social science | culture | Cultural celebrations | Hanukkah | Hanukkah is a holiday in the religion of Judaism. Followers of Judaism are known as Jews. | ||
Which would stretch the most? | [
"concrete sidewalk",
"ceramic flower pot",
"rubber ballon"
] | 2 | closed choice | grade4 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy.
For examp... | Stretchy is a property. A stretchy material gets longer when you pull on it.
Look at each picture, one at a time. Imagine pulling on the material shown in each picture.
Of the choices, the rubber ballon would stretch the most. If you gently pull on a rubber balloon, it will get longer. | |
How long is an adult great white shark? | [
"5 inches",
"5 miles",
"5 yards",
"5 feet"
] | 2 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of an adult great white shark is 5 yards.
5 inches and 5 feet are too short. 5 miles is too long. |
Suppose Florence decides to make vegetable soup. Which result would be a cost? | [
"The vegetable soup will be tastier than the beef barley soup would have been.",
"Florence will spend more time making the vegetable soup than she would have spent making the beef barley soup."
] | 1 | Florence is deciding whether to make vegetable soup or beef barley soup for dinner. She wants dinner to be as tasty as possible. But she is also hungry and wants to eat soon. | closed choice | grade4 | social science | economics | Basic economic principles | Costs and benefits | Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you wa... | This result is a cost. It involves giving up or spending something that Florence wants or needs:
Florence will spend more time making the vegetable soup than she would have spent making the beef barley soup. |
How long is a hammer? | [
"8 inches",
"8 yards"
] | 0 | Select the better estimate. | closed choice | grade2 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that a pencil is 8 long. You might be thinking, 8 what? Is the pencil 8 inches long? 8 feet? 8 miles?
The number 8 on its own does not give you much information about the len... | The better estimate for the length of a hammer is 8 inches.
8 yards is too long. |
Which word would you find on a dictionary page with the following guide words?
chute - crush | [
"comic",
"cubic"
] | 0 | closed choice | grade5 | 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 comic is between the guide words chute - crush, it would be found on that page. | |
Which figure of speech is used in this text?
See how I leave with every piece of you
Don't underestimate the things that I will do
—Adele, "Rolling in the Deep" | [
"assonance",
"chiasmus"
] | 0 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses assonance, the repetition of a vowel sound in a series of nearby words.
The words see, leave, and piece share a vowel sound. | |
Which word would you find on a dictionary page with the following guide words?
scale - slippery | [
"self",
"steward"
] | 0 | closed choice | grade5 | 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 self is between the guide words scale - slippery, it would be found on that page. | |
Which is softer? | [
"metal nail",
"rubber balloons"
] | 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. | Soft is a property. A soft material changes shape when you press on it.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the rubber balloons are softer. If you squeeze rubber, it will change shape. | |
According to Newton's third law, what other force must be happening? | [
"The suitcase is pulling on Samuel.",
"The suitcase is pushing on Samuel."
] | 0 | Isaac Newton was born in the 1600s and studied how objects move. He discovered three fundamental laws about forces and motion. According to Newton's third law, for every force, there is an equal and opposite force.
Consider the following force:
Samuel is pulling on a full suitcase. | closed choice | grade8 | natural science | physics | Velocity, acceleration, and forces | Predict forces using Newton's third law | According to Newton's third law, for every force, there is an equal and opposite force. This means that if one object is applying a force on a second object, the second object must also be applying a force on the first object, but in the opposite direction.
For example, if your hand is pushing down on a table, the tabl... | Samuel is pulling on the suitcase. So, Newton's third law tells you that the suitcase is pulling on Samuel. |
How long is a long-distance running race? | [
"9 miles",
"9 feet",
"9 inches",
"9 yards"
] | 0 | Select the best estimate. | closed choice | grade7 | natural science | units-and-measurement | Units and measurement | Choose customary units of distance, mass, and volume | Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A foo... | The best estimate for the length of a long-distance running race is 9 miles.
9 inches, 9 feet, and 9 yards are all too short. |
Which word would you find on a dictionary page with the following guide words?
fire - fought | [
"flute",
"fancy"
] | 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 flute is between the guide words fire - fought, it would be found on that page. | |
Compare the motion of three motorboats. Which motorboat was moving at the highest speed? | [
"a motorboat that moved 410miles south in 10hours",
"a motorboat that moved 200miles east in 10hours",
"a motorboat that moved 45miles east in 10hours"
] | 0 | closed choice | grade3 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects moving f... | Look at the distance each motorboat moved and the time it took to move that distance. The direction each motorboat moved does not affect its speed.
Notice that each motorboat moved for 10 hours. The motorboat that moved 410 miles moved the farthest distance in that time. So, that motorboat must have moved at the highes... | |
Select the temperature shown by this thermometer. | [
"60°F",
"30°F",
"35°F"
] | 0 | closed choice | grade3 | natural science | units-and-measurement | Weather and climate | Read a thermometer | A thermometer is a tool that measures temperature. Temperature can be measured in degrees. The symbol for degrees is °.
Some thermometers measure temperature in degrees Fahrenheit (°F). Fahrenheit is one scale used to measure temperature.
This is a tube thermometer. It has a tube filled with a red liquid.
There is a Fa... | Find the top of the red liquid.
Now look at the scale to the right. The top of the red liquid lines up with 60. So, the temperature is 60°F. | |
Read the following excerpt from a student essay. How can the writer best improve his or her word choice?
Just about every channel on television today offers some kind of reality TV show. These reality TV shows can often be entertaining and addictive to watch, but they are hardly ever really showing "reality." Participa... | [
"by fixing misused words",
"by reducing repetitive language",
"by replacing vague language"
] | 1 | closed choice | grade11 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | During peer review, you read and respond to a fellow student's writing. While there are many methods and strategies that you can use for reviewing a text, it is generally helpful to frame your suggestions in concrete and constructive ways and to consider the following areas for revision:
Ideas and development: Does the... | The writer could best improve his or her word choice by reducing repetitive language.
For example, the writer could reduce the use of reality TV shows by using pronouns such as they or phrases such as these programs. Similarly, the writer could reduce the use of often by using synonyms such as frequently.
Just about ev... | |
Which is the hardest? | [
"silk kimono",
"wood canoe",
"rubber gloves"
] | 1 | closed choice | grade4 | natural science | physics | Materials | Compare properties of materials | Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy.
For examp... | Hard is a property. A hard material keeps its shape when you press on it with your finger.
Look at each picture, one at a time. Imagine pushing on the material shown in each picture.
Of the choices, the wood canoe is the hardest. If you press on wood, it will not change shape. | |
Which logical fallacy is used in the text?
Sofia wants to play a guitar solo on our next recording. Her father is a horrible musician, though, so I doubt that Sofia's any good either. | [
"circular reasoning: an argument that supports a claim with the claim itself",
"guilt by association: a negative association intended to discredit someone or something"
] | 1 | closed choice | grade8 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that Sofia must be a bad guitar player, because her father is a horrible musician. However, even though Sofia's father is a horrible musician, that doesn't necessarily mean that Sofia is as well. This illustrates a type of logical fallacy known as guilt by association. | |
Assume all other forces on Logan are balanced. Which statement describes the forces on Logan? | [
"The forces are unbalanced, so there is a net force on Logan.",
"The forces are balanced, so there is no net force on Logan."
] | 1 | Logan is standing on a diving board at the pool. Earth's gravity is pulling down on Logan with a force of 400N. The diving board is pushing up on Logan with a force of 400N. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Balanced and unbalanced forces | A force is a push or a pull that acts on an object. Every force has a direction and a magnitude, or strength. If two forces act on an object in opposite directions, the forces are called opposing forces.
When opposing forces have the same magnitude, they are balanced. If all the forces on an object are balanced, there ... | To determine if there is a net force on Logan, look at the forces:
Earth's gravity is pulling Logan down with a force of 400 N.
The diving board is pushing Logan up with a force of 400 N.
The forces are in opposite directions, and the forces have the same magnitude: 400 N. This means that the forces are balanced, so th... |
Select the living thing. | [
"rain",
"aloe vera",
"brick wall",
"geode"
] | 1 | closed choice | grade4 | natural science | biology | Classification | Identify living and nonliving things | All living things are made up of cells. Plants, animals, and some fungi have many cells. Other living things are made up of just one cell.
All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. They use energy from food to grow and change.
All... | A geode is not a living thing.
A geode does not have all the traits of a living thing. It contains minerals that formed slowly over many years. But it does not need food or water.
Aloe vera is a living thing.
Aloe vera grows and responds to its environment. It needs food and water. It is made up of many cells.
Aloe ver... | |
Which tense does the sentence use?
The boy balances on one wobbly foot. | [
"present tense",
"past tense",
"future tense"
] | 0 | closed choice | grade4 | language science | verbs | Verb tense | Is the sentence in the past, present, or future tense? | Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Mo... | The sentence is in present tense. You can tell because it uses a present-tense verb, balances. The verb ends in -s and tells you about something that is true or happening now. | |
What does the verbal irony in this text suggest?
"Someone had better turn on the heat," Cassie said, sweat glistening on her face. | [
"The temperature was too warm.",
"The temperature was too cool."
] | 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.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking dow... | The text uses verbal irony, which involves saying one thing but implying something very different.
Someone had better turn on the heat ironically suggests that the temperature was too warm. Cassie did not think that more heat was needed; she was already sweating. | |
Compare the motion of two ducks. Which duck was moving at a lower speed? | [
"a duck that moved 580miles in 10hours",
"a duck that moved 620miles in 10hours"
] | 0 | closed choice | grade2 | natural science | physics | Force and motion | Compare the speeds of moving objects | An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about two objects movi... | Look at the distance each duck moved and the time it took to move that distance.
One duck moved 580 miles in 10 hours.
The other duck moved 620 miles in 10 hours.
Notice that each duck spent the same amount of time moving. The duck that moved 580 miles moved a shorter distance in that time. So, that duck must have move... | |
Which correctly shows the title of a short story? | [
"\"the fisherman and His Wife\"",
"\"The Fisherman and His Wife\""
] | 1 | closed choice | grade4 | language science | capitalization | Formatting | Capitalizing titles | In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or | Capitalize the first word, the last word, and every important word in between. The word and is not important, so it should not be capitalized.
The correct title is "The Fisherman and His Wife." | |
Choose the poem that uses onomatopoeia. | [
"Now sweet and clear, and faint and low,\nThe airy tinklings come and go,\nLike chimings from some far-off tower,\nOr patterings of an April shower.",
"Leave the lovely words unsaid;\nFor another thought is fled\nFrom my dream-entangled mind.\nBird of passion, unenshrined."
] | 0 | From Agnes E. Mitchell, "When the Cows Come Home" and from Rollo Britten, "Bird of Passion" | 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.
Or patterings of an April shower. |
Which is a run-on sentence? | [
"The city manager will run the meeting, she will explain the budget.",
"All the goats, cows, and horses on the farm."
] | 0 | 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... | The city manager will run the meeting, she will explain the budget is a run-on sentence. It has two sentences that are joined by just a comma: The city manager will run the meeting and She will explain the budget. | |
What information supports the conclusion that Karen acquired this trait? | [
"Karen is most interested in American history.",
"Karen learned history by reading."
] | 1 | Read the description of a trait.
Karen knows a lot about history. | closed choice | grade4 | natural science | biology | Traits and heredity | 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 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... | |
What is the mass of an elephant? | [
"6,680 grams",
"6,680 kilograms"
] | 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 elephant is 6,680 kilograms.
6,680 grams is too light. |
Does this passage describe the weather or the climate?
There were thin cirrus clouds in front of the moon last night. | [
"climate",
"weather"
] | 1 | 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 | grade4 | 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.
There were thin cirrus clouds in front of the moon last night.
This passage tells you about the clouds last night. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
What is the text's most likely purpose? | [
"to entertain",
"to persuade",
"to inform"
] | 2 | Read the text below.
When the drums begin, Joel will leap to the center of the stage for his solo. Everyone else should form a circle around him. | closed choice | grade4 | language science | writing-strategies | Author's purpose | Identify the purpose of a text | Authors write texts for different purposes, or reasons. Common purposes for writing are to persuade, to inform, or to entertain readers.
Authors persuade by convincing readers to believe or do something.
An advertisement tries to convince readers to buy a product.
A political poster tries to convince readers to vote fo... | The text is a set of instructions. Its purpose is to inform. |
Using only these supplies, which question can Tucker investigate with an experiment? | [
"Is the pet lizard more active when it is fed insects or lettuce?",
"Is the pet lizard more active when its tank is heated with one heating lamp or with two heating lamps?",
"Is the pet lizard more active when it is fed crickets or mealworms?"
] | 2 | Tucker has a pet lizard. Tucker notices that on some days, the lizard is active and runs around the tank. On other days, the lizard hardly moves at all. Tucker wonders what factors affect how active his lizard is. So, he decides to design an experiment. He has the following supplies available:
one pet lizard
live crick... | 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 figure of speech is used in this text?
Lucy's Boutique claims to have "something for everyone," but it is generally understood that their target market is women of a certain age. | [
"euphemism",
"oxymoron"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Of a certain age is an indirect and generally more polite way of referring to older people. | |
How long is a parking space? | [
"7 centimeters",
"7 meters",
"7 millimeters",
"7 kilometers"
] | 1 | 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 a parking space is 7 meters.
7 millimeters and 7 centimeters are too short. 7 kilometers is too long. |
What do these two changes have in common?
newly poured concrete becoming hard
a copper statue turning green | [
"Both are caused by heating.",
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling."
] | 1 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Concrete hardening is a chemical change. The chemicals in the concrete react with each other to form a different type of matter. The new matter is hard and strong.
A copper statue turning green is a chemical change. The copper reacts with oxygen in the air. This reaction forms a differe... | |
Select the animal that has a backbone. | [
"monarch butterfly",
"clownfish"
] | 1 | Hint: Mammals, birds, fish, reptiles, and amphibians all have backbones. | closed choice | grade2 | natural science | biology | Classification | Identify animals with and without backbones | Some animals have a backbone. The backbone is made of many bones in an animal's back. An animal's backbone helps connect the different parts of its body. In the drawings below, each animal's backbone is colored orange.
Other animals do not have a backbone. In fact, these animals don't have any bones! Some animals witho... | A monarch butterfly is an insect. Like other insects, a monarch butterfly does not have a backbone. It has a hard outer cover.
A clownfish is a fish. Like other fish, a clownfish has a backbone. |
Complete the statement. Assume that the sled's mass did not change.
The gravitational potential energy stored between the sled and Earth () as Rachel rode down the hill. | [
"decreased",
"stayed the same",
"increased"
] | 0 | Read the text about an object in motion.
On a snowy day, Rachel rode her sled down a big hill. | closed choice | grade8 | 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 sled and the center of Earth changed.
The bottom of the hill was lower than the point where Rachel started sledding. As Rachel rode toward the bottom of the hill, the distance between the sled and the center of Earth decreased. So, the gravitational potential energy stored betwe... |
Does this passage describe the weather or the climate?
Garrett put on an extra pair of socks this morning because it was so cold. | [
"climate",
"weather"
] | 1 | 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 | grade4 | 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.
Garrett put on an extra pair of socks this morning because it was so cold.
This passage tells you about the temperature this morning where Garrett lives. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
Which word would you find on a dictionary page with the following guide words?
vast - vinegar | [
"velvet",
"volcano"
] | 0 | closed choice | grade5 | 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 velvet is between the guide words vast - vinegar, it would be found on that page. | |
Select the one substance that is not a mineral. | [
"Aquamarine is a solid. It is not made by living things.",
"Candle wax is made by humans. It is a solid.",
"Malachite is formed in nature. It is a pure substance."
] | 1 | closed choice | grade4 | natural science | earth-science | Rocks and minerals | Identify minerals using properties | Minerals are the building blocks of rocks. A rock can be made of one or more minerals.
Minerals and rocks have the following properties:
Property | Mineral | Rock
It is a solid. | Yes | Yes
It is formed in nature. | Yes | Yes
It is not made by organisms. | Yes | Yes
It is a pure substance. | Yes | No
It has a fixed cry... | Compare the properties of each substance to the properties of minerals. Select the substance whose properties do not match those of minerals.
Malachite is a mineral.
Candle wax is made by humans. But minerals are not made by living things.
So, candle wax is not a mineral.
Aquamarine is a mineral. | |
Which type of sentence is this?
Reggie always approaches difficult tasks enthusiastically, and he frequently motivates others with his energy and fervor. | [
"simple",
"complex",
"compound-complex",
"compound"
] | 3 | closed choice | grade8 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is compound. It is made up of two independent clauses joined by the coordinating conjunction and.
Reggie always approaches difficult tasks enthusiastically, and he frequently motivates others with his energy and fervor. | |
Is there a sentence fragment?
When it comes to seafood, Americans aren't always eating what they think they are. According to an FDA report based on DNA analysis of fish that are frequently misidentified. | [
"no",
"yes"
] | 1 | yes or no | grade12 | language science | writing-strategies | Sentences, fragments, and run-ons | Identify sentence fragments | A sentence is a group of words that expresses a complete thought.
The band I'm in has been rehearsing daily because we have a concert in two weeks.
A sentence fragment is a group of words that does not express a complete thought.
Rehearsing daily because we have a concert in two weeks.
This fragment is missing a subjec... | There is a sentence fragment that does not express a complete thought.
When it comes to seafood, Americans aren't always eating what they think they are. According to an FDA report based on DNA analysis of fish that are frequently misidentified.
Here is one way to fix the sentence fragment:
When it comes to seafood, Am... | |
Select the one animal that has all of the bird traits listed above. | [
"Common ostriches have a beak and feathers. They also have two wings, but they cannot fly. Ostriches lay the biggest eggs of any bird. The shell of an ostrich egg is so hard that you can stand on the egg without breaking it!",
"Florida manatees have hairs on their bodies that are similar to whiskers. These hairs ... | 0 | Birds are a group of animals with similar traits. The following traits can be used to identify birds:
They have feathers.
They have wings.
They have a beak.
They make eggs with shells. Observe the animals and read the descriptions. | closed choice | grade5 | natural science | biology | Classification | Use evidence to classify mammals, birds, fish, reptiles, and amphibians | Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, sc... | To decide if an animal is part of a group, look at the traits of the group.
Birds have the following traits:
They have feathers.
They have wings.
They have a beak.
They make eggs with shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A Florida manat... |
Which of the following contains a vague pronoun reference? | [
"Several competent city council members have been elected in Springtown, but the mayor's office has prevented the council members from significantly influencing policy.",
"The citizens of Springtown have elected several competent city council members, but the mayor's office has prevented them from significantly i... | 1 | 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 them could refer to the citizens or several competent city council members.
The citizens of Springtown have elected several competent city council members, but the mayor's office has prevented them from significantly influencing policy.
The second ... | |
Which word does not rhyme? | [
"sleep",
"step",
"keep"
] | 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 sleep and keep rhyme. They both end with the eep sound.
The word step does not rhyme. It ends with a different sound. | |
Which of the following contains a vague pronoun reference? | [
"The fleece jacket that Amy saw on the bench looked like Katie's.",
"Amy told Katie that the fleece jacket on the bench looked like hers."
] | 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 second answer choice contains a vague pronoun reference. The pronoun hers could refer to Amy's or Katie's.
Amy told Katie that the fleece jacket on the bench looked like hers.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is clea... | |
Which figure of speech is used in this text?
Jessica's sweater shrank just a bit. It fits her baby sister now. | [
"apostrophe",
"understatement"
] | 1 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses understatement, which involves deliberately representing something as less serious or important than it really is.
Shrank just a bit is an understatement, since the baby is presumably much smaller than Jessica. | |
Does this passage describe the weather or the climate?
It was partly cloudy in Osaka, Japan, on Thursday. | [
"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 | grade4 | natural science | earth-science | Weather and climate | What's the difference between weather and climate? | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the text carefully.
It was partly cloudy in Osaka, Japan, on Thursday.
This passage tells you about the clouds in Osaka on Thursday. It describes the atmosphere at a certain place and time. So, this passage describes the weather. |
What information supports the conclusion that Gabrielle acquired this trait? | [
"Gabrielle's scar was caused by an accident. She cut her arm when she fell off her bicycle.",
"Gabrielle's sister has a bruise from falling on her elbow.",
"Gabrielle's scar is on her right elbow. Her father also has a scar on his right elbow."
] | 0 | Read the description of a trait.
Gabrielle has a scar on her right elbow. | closed choice | grade7 | natural science | biology | Genes to traits | Inherited and acquired traits: use evidence to support a statement | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits.... | |
What kind of sentence is this?
That screeching hurts my ears! | [
"interrogative",
"exclamatory"
] | 1 | closed choice | grade5 | 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. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence tells about something, but it shows strong feeling and ends with an exclamation point. It is an exclamatory sentence. | |
Which of the following contains a vague pronoun reference? | [
"The Doyles' car has a dent in the bumper, but otherwise their car looks just like the Shens'.",
"The Doyles' car looks just like the Shens', but theirs has a dent in the bumper."
] | 1 | closed choice | grade7 | language science | writing-strategies | Pronouns and antecedents | Identify vague pronoun references | When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vagu... | The second answer choice contains a vague pronoun reference. The pronoun theirs could refer to the Doyles' or the Shens'.
The Doyles' car looks just like the Shens', but theirs has a dent in the bumper.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so t... | |
What kind of sentence is this?
Does Janice prefer pizza or pasta? | [
"interrogative",
"exclamatory"
] | 0 | closed choice | grade4 | 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. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence asks something, and it ends with a question mark. It is an interrogative sentence. | |
What information supports the conclusion that Pamela acquired this trait? | [
"Pamela likes to photograph birds at the zoo.",
"Pamela was not born knowing how to identify different bird calls. She had to learn this skill."
] | 1 | Read the description of a trait.
Pamela is good at identifying birds from their calls. | closed choice | grade5 | natural science | biology | Traits and heredity | 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 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... | |
What do these two changes have in common?
water vapor condensing on a bathroom mirror
sediment settling to the bottom of a muddy puddle | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 2 | closed choice | grade7 | natural science | chemistry | Chemical reactions | Compare physical and chemical changes | Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef... | Step 1: Think about each change.
Water vapor condensing on a bathroom mirror is a change of state. So, it is a physical change. The water changes state from gas in the air to liquid water on the mirror. But the water vapor and the liquid water are both made of water.
Loose matter such as sand and dirt is called sedimen... | |
What is the mass of an apple? | [
"115 kilograms",
"115 grams"
] | 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 an apple is 115 grams.
115 kilograms is too heavy. |
Which text uses the word terribly in its traditional sense? | [
"Colette made escargots using the small snails from her garden. She prepared them according to the recipe but found the chewy texture terribly disappointing.",
"Colette decided to make escargots using the small snails from her garden, but she prepared them terribly. Since she'd forgotten to add garlic, the taste ... | 1 | closed choice | grade9 | language science | writing-strategies | Word usage and nuance | Explore words with new or contested usages | Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner.
When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be... | The second text uses terribly in its traditional sense: in a terrible manner.
Colette decided to make escargots using the small snails from her garden, but she prepared them terribly. Since she'd forgotten to add garlic, the taste was disappointing.
The first text uses terribly in its nontraditional sense: extremely; v... | |
What do these two changes have in common?
a piece of apple turning brown
a banana getting ripe on the counter | [
"Both are chemical changes.",
"Both are caused by cooling.",
"Both are only physical changes.",
"Both are caused by heating."
] | 0 | closed choice | grade4 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
A piece of apple turning brown is a chemical change. The apple reacts with oxygen in the air and turns into a different type of matter.
If you scrape off the brown layer of the apple, the inside is still white. The inside hasn't touched the air. So the chemical change didn't happen to t... | |
Based on this information, what is Millie's phenotype for the fur type trait? | [
"straight fur",
"curly fur"
] | 1 | In a group of cats, some individuals have straight fur and others have curly fur. In this group, the gene for the fur type trait has two alleles. The allele for curly fur (f) is recessive to the allele for straight fur (F).
Millie is a cat from this group. Millie has the homozygous genotype ff for the fur type gene. | closed choice | grade7 | natural science | biology | Genes to traits | Genetics vocabulary: dominant and recessive | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | Millie's genotype for the fur type gene is ff. Millie's genotype of ff has only f alleles. The f allele is for curly fur. So, Millie's phenotype for the fur type trait must be curly fur.
To check this answer, consider whether Millie's alleles are dominant or recessive. The allele for curly fur (f) is recessive to the a... |
In 1800, where did most Americans live? | [
"near the Atlantic Coast",
"along the Mississippi River",
"along the Gulf of Mexico",
"west of the Appalachian Mountains"
] | 0 | closed choice | grade5 | social science | us-history | Early 19th century American history | The Lewis and Clark Expedition | In 1800, the United States looked like this. The western boundary was the Mississippi River.
However, most Americans lived within 50 miles of the Atlantic Coast. The darker parts of the map show where the most people lived. The rest of the country was mostly populated by Native American groups.
This map uses census rec... | ||
Which figure of speech is used in this text?
The old wooden rocking chair that Bridget brought home from the rummage sale was as comfortable as a bed of nails. | [
"alliteration",
"verbal irony"
] | 1 | 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.
As comfortable as a bed of nails shows verbal irony because sitting on nails would not be comfortable. | |
Which is a compound sentence? | [
"The butcher cuts the fat off the meat.",
"Pedro can iron this shirt, or he can wear a different one."
] | 1 | closed choice | grade3 | language science | grammar | Sentences, fragments, and run-ons | Is the sentence simple or compound? | A simple sentence is a sentence with only one subject and predicate.
The pitcher threw the ball to first base.
A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so.
The pitcher threw the ball, and the batter hit it.
Some simple sentences have a compound subject or ... | The second sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction or.
Pedro can iron this shirt, or he can wear a different one. | |
Which figure of speech is used in this text?
Kinsley swore she would never go back to Oak Grove, but I told her she should never say never. The city might be a very different place in ten years. | [
"oxymoron",
"paradox"
] | 1 | closed choice | grade12 | language science | figurative-language | Literary devices | Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperb... | The text uses a paradox, a statement that might at first appear to be contradictory, but that may in fact contain some truth.
Never say never at first appears to be contradictory: by saying the phrase itself, you have already said never. However, it contains some truth: people often change their minds as they age and s... | |
Complete the sentence so that it uses personification.
The long-ignored book sat () on the nightstand. | [
"unread",
"patiently"
] | 1 | closed choice | grade10 | language science | writing-strategies | Creative techniques | Use personification | Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point.
The trees danced in the wind.
The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, t... | Complete the sentence with the word patiently. It describes the book as if it were a patient person. | |
Select the liquid. | [
"thread",
"milk",
"air inside a tire",
"tortoise shell"
] | 1 | closed choice | grade3 | natural science | physics | States of matter | Identify solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | The air inside a tire is a gas. A gas expands to fill a space. The air in a tire expands to fill all the space inside the tire. If air leaks out, it will expand into the space around the tire.
Thread is a solid that can be bent or tangled. But it still has a size and shape of its own.
A tortoise shell is a solid. A sol... | |
Would you find the word adopt on a dictionary page with the following guide words?
about - ashes | [
"yes",
"no"
] | 0 | yes or no | grade8 | 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 adopt is between the guide words about - ashes, it would be found on that page. | |
Would you find the word going on a dictionary page with the following guide words?
glove - guitar | [
"no",
"yes"
] | 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 going is between the guide words glove - guitar, it would be found on that page. | |
Which figure of speech is used in this text?
He that is of the opinion money will do everything may well be suspected of doing everything for money.
—Benjamin Franklin, Poor Richard's Almanack | [
"chiasmus",
"apostrophe"
] | 0 | closed choice | grade11 | language science | figurative-language | Literary devices | Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses.
We are united. We are powerful. We are winners.
Antithesis involves contrasting opposing id... | The text uses chiasmus, an expression in which the second half parallels the first but reverses the order of words.
The second half of the sentence reverses the order of the words money and everything relative to the first half. | |
Read the following excerpt from a student essay. How can the writer best improve his or her sentence fluency?
A 2013 study by Arizona State University's W. P. Carey School of Business examined the relationship between customers and companies in the United States. According to the study, customer satisfaction remains lo... | [
"by varying how sentences begin",
"by combining sentences that contain similar information",
"by using shorter sentences"
] | 1 | closed choice | grade11 | language science | writing-strategies | Editing and revising | Suggest appropriate revisions | During peer review, you read and respond to a fellow student's writing. While there are many methods and strategies that you can use for reviewing a text, it is generally helpful to frame your suggestions in concrete and constructive ways and to consider the following areas for revision:
Ideas and development: Does the... | The writer could best improve his or her sentence fluency by combining sentences that contain similar information.
For example, the writer could turn the underlined text into one sentence, such as According to the study, customer satisfaction levels remain low, on par with those reported in the 1970 s.
A 2013 study by ... | |
Which closing is correct for a letter? | [
"your niece,\nEmily",
"Your niece,\nEmily"
] | 1 | closed choice | grade2 | language science | capitalization | Capitalization | Greetings and closings of letters | A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I... | The second closing is correct:
Its first word is capitalized, and it ends with a comma. | |
Using only these supplies, which question can Gina investigate with an experiment? | [
"Does a rubber ball travel farther when launched from a metal catapult or from a wooden catapult?",
"Does a heavier ball travel farther than a lighter ball when launched from a catapult?",
"Does a catapult with a longer arm launch a rubber ball farther than a catapult with a shorter arm?"
] | 2 | Gina visits a museum about ancient Greece. She notices an exhibit with models of wooden catapults that were used to launch large rocks across battlefields. She wonders what factors affect how far a catapult can launch an object. So, she decides to design an experiment. She has the following supplies available:
a wooden... | closed choice | grade6 | natural science | science-and-engineering-practices | Designing experiments | Identify questions that can be investigated with a set of materials | Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment.
Imagine that you are wondering if plants gro... | |
What kind of sentence is this?
Meet me at my house at noon. | [
"interrogative",
"imperative"
] | 1 | closed choice | grade4 | 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. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How ... | The sentence tells someone to do something, so it is an imperative sentence. Here, it ends with a period. | |
Is the following trait inherited or acquired?
Dana can play the flute. | [
"acquired",
"inherited"
] | 0 | Hint: Playing an instrument well takes practice. | closed choice | grade3 | natural science | biology | Heredity | Identify inherited and acquired traits | Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's lif... | People are not born knowing how to play the flute. Instead, some people learn how to play. So, playing the flute is an acquired trait. |
What do these two changes have in common?
saliva breaking down a piece of bread
silver jewelry tarnishing | [
"Both are chemical changes.",
"Both are only physical changes.",
"Both are caused by cooling.",
"Both are caused by heating."
] | 0 | 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.
Saliva breaking down a piece of bread is a chemical change. Bread is made up mostly of a chemical called starch. Saliva breaks the bonds between atoms in the starch molecules.
The atoms then link together to form smaller, simpler molecules of sugar. The sugar is a different type of matt... | |
Would you find the word peril on a dictionary page with the following guide words?
path - plaster | [
"no",
"yes"
] | 1 | yes or no | 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 peril is between the guide words path - plaster, it would be found on that page. | |
What kind of sentence is this?
I can't believe this is Linda's first time seeing the Pacific Ocean! | [
"interrogative",
"exclamatory",
"declarative"
] | 1 | closed choice | grade7 | 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. | |
Does this passage describe the weather or the climate?
Between June and December in the Philippines, up to 27 centimeters of rain can fall each month. | [
"weather",
"climate"
] | 1 | 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 | grade4 | 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.
Between June and December in the Philippines, up to 27 centimeters of rain can fall each month.
This passage tells you about the usual precipitation in the Philippines. It does not describe what the weather is like on a particular day. So, this passage describes the climate. |
Compare the motion of two speedboats. Which speedboat was moving at a higher speed? | [
"a speedboat that moved 180miles in 5hours",
"a speedboat that moved 285miles in 5hours"
] | 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 speedboat moved and the time it took to move that distance.
One speedboat moved 285 miles in 5 hours.
The other speedboat moved 180 miles in 5 hours.
Notice that each speedboat spent the same amount of time moving. The speedboat that moved 285 miles moved a farther distance in that time. So, t... | |
What is the mass of an elephant? | [
"5,030 grams",
"5,030 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 an elephant is 5,030 kilograms.
5,030 grams is too light. |
Which sentence uses a metaphor? | [
"Zeke's eyes are as green as emeralds.",
"Zeke's eyes are bright green emeralds."
] | 1 | closed choice | grade5 | language science | figurative-language | Literary devices | Identify similes and metaphors | Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A che... | This sentence uses a metaphor:
Zeke's eyes are bright green emeralds.
The words eyes and emeralds are compared without the word like or as.
This sentence uses a simile:
Zeke's eyes are as green as emeralds.
The words eyes and emeralds are compared using the word as. | |
How long is a potato? | [
"15 meters",
"15 kilometers",
"15 centimeters",
"15 millimeters"
] | 2 | 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 a potato is 15 centimeters.
15 millimeters is too short. 15 meters and 15 kilometers are too long. |
Which figure of speech is used in this text?
The residents of Detroit will be delighted by today's forecast; they can expect another unpleasant weekend of heavy snow, sleet, and ice. | [
"simile",
"verbal irony"
] | 1 | closed choice | grade10 | language science | figurative-language | Literary devices | Classify figures of speech: review | Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from his... | The text uses verbal irony, which involves saying one thing but implying something very different.
Delighted shows verbal irony because the residents of Detroit are probably annoyed, not delighted, about another weekend of unpleasant weather. | |
What does the hyperbole in this text suggest?
After he finished the marathon, Jacob collapsed into a chair and declared that he could no longer move a single muscle. | [
"Jacob was very tired and sore.",
"Jacob became paralyzed."
] | 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 could no longer move a single muscle suggests that Jacob was very tired and sore. His muscles were not literally incapable of moving. | |
Which sentence states a fact? | [
"Diamond Head crater in Hawaii attracts about 900,000 visitors annually.",
"The hour-long hike up Diamond Head crater is too strenuous."
] | 0 | closed choice | grade12 | language science | writing-strategies | Developing and supporting arguments | Distinguish facts from opinions | Statements of fact make claims that are based on research, observation, or experimentation. Facts can be proved with evidence.
Napoleon Bonaparte was shorter than King Louis XVI.
This statement is a fact. The statement can be verified by researching and comparing the height of each man.
Statements of opinion make claim... | The first sentence states a fact. It can be verified by looking up how many people visit Diamond Head crater every year.
Diamond Head crater in Hawaii attracts about 900,000 visitors annually.
The second sentence states an opinion. Too strenuous indicates a personal judgment.
The hour-long hike up Diamond Head crater i... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.