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What is the capital of Georgia? | [
"Savannah",
"Atlanta",
"Nashville",
"Carson City",
"I don't know"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Atlanta is the capital of Georgia. | B | 100 | |||
Select the organism in the same species as the axolotl. | [
"Ambystoma mexicanum",
"Camellia sasanqua",
"Tigrisoma mexicanum",
"None of the above",
"I don't know"
] | 0 | This organism is an axolotl. Its scientific name is Ambystoma mexicanum. | closed choice | grade8 | natural science | biology | Classification and scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | An axolotl's scientific name is Ambystoma mexicanum.
Ambystoma mexicanum has the same scientific name as an axolotl. So, these organisms are in the same species.
Camellia sasanqua does not have the same scientific name as an axolotl. So, Ambystoma mexicanum and Camellia sasanqua are not in the same species.
Tigrisoma m... | A | 101 | |
Identify the question that Tamir's experiment can best answer. | [
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?",
"Does temperature affect how much bacteria can grow in liquid?",
"All of the above",
"None of the above",
"I don't know"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Tamir mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He a... | closed choice | grade7 | 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... | A | 102 | ||
Identify the question that Maria and Desmond's experiment can best answer. | [
"Does Maria's snowboard slide down a hill in less time when it has a thin layer of wax or a thick layer of wax?",
"Does Maria's snowboard slide down a hill in less time when it has a layer of wax or when it does not have a layer of wax?",
"All of the above",
"None of the above",
"I don't know"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Maria applied a thin layer of wax to the underside of her snowboard and rode the board straight down a hill. Then, she removed the wax and rode the snowboard straight down the hill again. She repeated the rides four mor... | 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... | B | 103 | ||
Which air temperature was measured within the outlined area shown? | [
"32°C",
"10°C",
"5°C",
"None of the above",
"I don't know"
] | 0 | The map below shows air temperatures in the lower atmosphere on October 1, 2015. The outlined area shows an air mass that influenced weather in North America on that day.
Look at the map. Then, answer the question below.
Data source: United States National Oceanic and Atmospheric Administration/Earth System Research La... | closed choice | grade6 | natural science | earth-science | Weather and climate | Identify and compare air masses | To study air masses, scientists can use maps that show conditions within Earth's atmosphere. For example, the map below uses color to show air temperatures.
The map's legend tells you the temperature that each color represents. Colors on the left in the legend represent lower temperatures than colors on the right. For ... | Look at the colors shown within the outlined area. Then, use the legend to determine which air temperatures those colors represent.
The legend tells you that this air mass contained air with temperatures between 25°C and 35°C.
32°C is within this range.
5°C and 10°C are outside of this range. | A | 104 | |
Will these magnets attract or repel each other? | [
"attract",
"repel",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Two magnets are placed as shown. | closed choice | grade5 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on other magnets without touching them. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes are called magnetic forces.
Magnetic forces are strongest at the magnets' poles, or ends. Every magnet has two poles: a north pole (N) and a south pole (... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The south pole of one magnet is closest to the south pole of the other magnet. Like poles repel. So, these magnets will repel each other. | B | 105 | |
Is the air inside a balloon a solid, a liquid, or a gas? | [
"a liquid",
"a gas",
"a solid",
"None of the above",
"I don't know"
] | 1 | closed choice | grade3 | 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 definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | The air inside a balloon is a gas. A gas expands to fill a space.
The air inside a balloon expands to fill all the space in the balloon. If the balloon pops, the air will expand to fill a much larger space. | B | 106 | ||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is smaller in Pair 1.",
"None of the above",
"I don't know"
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade5 | natural science | physics | Magnets | 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,... | Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are the same as in Pair 2. The distance between the magnets is also the same.
So, the magnitude of the magnetic force is the same in both pairs. | A | 107 | |
What is the capital of Pennsylvania? | [
"Harrisburg",
"Providence",
"Boston",
"Montpelier",
"I don't know"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Harrisburg is the capital of Pennsylvania. | A | 108 | |||
Which of these states is farthest east? | [
"Florida",
"New York",
"New Hampshire",
"Iowa",
"I don't know"
] | 2 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. New Hampshire is farthest east. | C | 109 | ||
What evidence of erosion does this picture show? | [
"The rocks in the canyon have a reddish color.",
"There is a canyon with steep walls.",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Erosion is what happens when loose pieces of rock are carried away by water, wind, or ice.
This is a picture of Antelope Canyon. Antelope Canyon was formed as a result of erosion over thousands of years. | closed choice | grade2 | natural science | earth-science | Earth events | Find evidence of changes to Earth's surface | Evidence is information that tells you something happened.
How do you look for evidence of a change to Earth's surface?
There are many ways to find evidence of a change to Earth's surface. One way is to look at a picture that was taken after the change.
Here are some examples of what the evidence for different changes ... | B | 110 | ||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 2.",
"The magnetic force is weaker in Pair 1.",
"None of the above",
"I don't know"
] | 1 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths 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 stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 2 are farther apart than the magnets in Pair 1. So, the magnetic force is weaker in Pair 2 than in Pair 1. | B | 111 | |
Which is this organism's common name? | [
"Fromia monilis",
"necklace sea star",
"All of the above",
"None of the above",
"I don't know"
] | 1 | This organism is Fromia monilis. It is also called a necklace sea star. | closed choice | grade7 | natural science | biology | Classification and scientific names | Identify common and scientific names | An organism's common name is the name that people normally call the organism. Common names often contain words you know.
An organism's scientific name is the name scientists use to identify the organism. Scientific names often contain words that are not used in everyday English.
Scientific names are written in italics,... | Fromia monilis is written in italics. The first word is capitalized, and the second word is not. So, it is the scientific name.
Fromia monilis is the organism's scientific name. So, you know that necklace sea star is the common name. | B | 112 | |
Which month has the lowest average precipitation in London? | [
"May",
"July",
"February",
"None of the above",
"I don't know"
] | 1 | Use the graph to answer the question below. | closed choice | grade4 | 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. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in London, look at the graph.
Choice "Feb" is incorrect.
Choice "May" is incorrect.
Choice "Jul" is incorrect.
July has an average monthly precipitation of about 45 millimeters. This is lower than in any other month. So, July has the lowest average precipitation. | B | 113 | |
Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature? | [
"sample B",
"sample A",
"neither; the samples have the same temperature",
"None of the above",
"I don't know"
] | 0 | 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 | grade7 | 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 sample B has more mass than each particle in sample A. The particles in sample B also 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 ... | A | 114 | |
Which of these states is farthest east? | [
"Wyoming",
"Kansas",
"Michigan",
"Washington",
"I don't know"
] | 2 | closed choice | grade4 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Michigan is farthest east. | C | 115 | ||
Select the organism in the same species as the European nightjar. | [
"Lepus europaeus",
"Caprimulgus europaeus",
"Tyto alba",
"None of the above",
"I don't know"
] | 1 | This organism is a European nightjar. Its scientific name is Caprimulgus europaeus. | closed choice | grade7 | 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 European nightjar's scientific name is Caprimulgus europaeus.
Tyto alba does not have the same scientific name as a European nightjar. So, Caprimulgus europaeus and Tyto alba are not in the same species.
Lepus europaeus does have the same species within its genus as a European nightjar, but they are not in the same g... | B | 116 | |
Which animal's skin is better adapted to hurt an attacking predator? | [
"porcupine",
"lesser bushbaby",
"All of the above",
"None of the above",
"I don't know"
] | 0 | Thorny devils have sharp spines covering much of their skin. The skin of the is adapted to hurt an attacking predator.
Figure: thorny devil. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the thorny devil.
The thorny devil has sharp spines on its skin. Its skin is adapted to hurt an attacking predator. The spines can harm a predator that tries to bite the thorny devil.
Now look at each animal. Figure out which animal has a similar adaptation.
The porcupine has sharp spines on its ... | A | 117 | |
Which animal's neck is also adapted for reaching high branches? | [
"chital",
"bison",
"All of the above",
"None of the above",
"I don't know"
] | 0 | Gerenuk eat leaves and twigs. The 's neck is adapted for reaching branches that are high above the ground.
Figure: gerenuk. | closed choice | grade5 | natural science | biology | Adaptations | Animal adaptations: beaks, mouths, and necks | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The shape of an animal's neck is one example of an adaptation. Animals' necks can be adapted in different ways. For example, a large frilled neck might help an animal appear dangerous ... | Look at the picture of the gerenuk.
Now look at each animal. Figure out which animal has a similar adaptation.
The chital has a long neck. Its neck is adapted for reaching high branches.
The bison has a short neck. Its neck is not adapted for reaching high branches. The bison eats mostly grass. | A | 118 | |
Which ocean is highlighted? | [
"the Arctic Ocean",
"the Atlantic Ocean",
"the Pacific Ocean",
"the Southern Ocean",
"I don't know"
] | 0 | closed choice | grade6 | 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 Arctic Ocean. | A | 119 | ||
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 1.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"None of the above",
"I don't know"
] | 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 shapes. | 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.
Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are... | C | 120 | |
What is the capital of Oregon? | [
"Santa Fe",
"Salem",
"Portland",
"Denver",
"I don't know"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Salem is the capital of Oregon. | B | 121 | |||
Which property matches this object? | [
"sweet",
"bouncy",
"All of the above",
"None of the above",
"I don't know"
] | 0 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
Sugar has a sweet taste. The cake batter is sweet.
A bouncy object will bounce back from the floor if you drop it. The cake batter is not bouncy. | A | 122 | |
Which of these states is farthest west? | [
"Georgia",
"Virginia",
"Rhode Island",
"Pennsylvania",
"I don't know"
] | 0 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. Georgia is farthest west. | A | 123 | ||
Which country is highlighted? | [
"Haiti",
"Barbados",
"Saint Vincent and the Grenadines",
"Saint Lucia",
"I don't know"
] | 3 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Lucia. | D | 124 | |||
Which animal's limbs are also adapted for climbing trees? | [
"red-necked wallaby",
"chimpanzee",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Lar gibbons live in the forests of Southeast Asia. Their limbs are adapted for climbing trees.
Figure: lar 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 lar gibbon.
The lar 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 chimpanzee has long, powerful limbs. Its limbs are adapted for climbing trees.
The... | B | 125 | |
What is the capital of Montana? | [
"Carson City",
"Missoula",
"New Haven",
"Helena",
"I don't know"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Helena is the capital of Montana. | D | 126 | |||
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 greater in Pair 2.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is greater in Pair 1.",
"None of the above",
"I don't know"
] | 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 and shapes. | 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 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... | C | 127 | |
Does this passage describe the weather or the climate? | [
"weather",
"climate",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Figure: Munich.
Munich, a city in Germany, receives a small amount of snow each year during the winter.
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 | Weather and climate around the world | The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere.
Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day.
Climate is the pattern of ... | Read the passage carefully.
Munich, a city in Germany, receives a small amount of snow each year during the winter.
This passage tells you about the usual pattern of precipitation in Munich. This passage does not describe what the weather is like on a particular day. So, this passage describes the climate. | B | 128 | |
Look at the models of molecules below. Select the elementary substance. | [
"carbon tetrachloride",
"chlorine",
"ethanol",
"None of the above",
"I don't know"
] | 1 | 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 ... | B | 129 | |||
What is the capital of Alabama? | [
"Charleston",
"Birmingham",
"Richmond",
"Montgomery",
"I don't know"
] | 3 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Montgomery is the capital of Alabama. | D | 130 | |||
Which of the following could Shawn's test show? | [
"how steady a parachute with a 1 m vent was at 200 km per hour",
"if the spacecraft was damaged when using a parachute with a 1 m vent going 200 km per hour",
"whether a parachute with a 1 m vent would swing too much at 400 km per hour",
"None of the above",
"I don't know"
] | 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... | A | 131 | ||
Complete the statement.
Methane is (). | [
"an elementary substance",
"a compound",
"All of the above",
"None of the above",
"I don't know"
] | 1 | The model below represents a molecule of methane. Methane is the main component of natural gas, which is used in homes for heating and cooking. | closed choice | grade5 | natural science | chemistry | Atoms and molecules | Classify elementary substances and compounds using models | All substances are 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 some element... | Count the number of chemical elements represented in the model. Then, decide if methane is an elementary substance or a compound.
In this model, each ball is labeled with C for carbon or H for hydrogen. So, the model shows you that methane is made of two chemical elements bonded together.
Substances made of two or more... | B | 132 | |
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The magnetic force is stronger in Pair 2.",
"The magnetic force is stronger in Pair 1.",
"The strength of the magnetic force is the same in both pairs.",
"None of the above",
"I don't know"
] | 0 | The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths 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 stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger.
The magnets in Pair 2 are closer together than the magnets in Pair 1. So, the magnetic force is stronger in Pair 2 than in Pair 1. | A | 133 | |
Which continent is highlighted? | [
"South America",
"Antarctica",
"North America",
"None of the above",
"I don't know"
] | 0 | closed choice | grade2 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is South America. | A | 134 | ||
Which bird's beak is also adapted to get nectar out of long flowers? | [
"snowy owl",
"violet sabrewing",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Malachite sunbirds live in the coastal and hilly areas of South Africa. The shape of the 's beak is adapted to get nectar out of long flowers.
Figure: malachite sunbird. | 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 a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ... | Look at the picture of the malachite sunbird.
The malachite sunbird has a long, thin beak. Its beak is adapted to get nectar out of long flowers. The malachite sunbird's long, thin beak can reach deep into the flowers.
Now look at each bird. Figure out which bird has a similar adaptation.
The violet sabrewing has a lon... | B | 135 | |
What is the capital of Washington? | [
"Salem",
"Olympia",
"Nampa",
"Spokane",
"I don't know"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify the 50 state capitals | Olympia is the capital of Washington. | B | 136 | |||
Is dolerite a mineral? | [
"yes",
"no",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Dolerite has the following properties:
found in nature
not a pure substance
no fixed crystal structure
solid
not made by living things | yes or no | grade5 | 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... | Dolerite does not have all the properties of a mineral. So, dolerite is not a mineral. | B | 137 | |
Select the organism in the same genus as the North American beaver. | [
"Alouatta caraya",
"Castor canadensis",
"Hystrix cristata",
"None of the above",
"I don't know"
] | 1 | This organism is a North American beaver. Its scientific name is Castor canadensis. | closed choice | grade7 | 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 North American beaver's scientific name is Castor canadensis. The first word of its scientific name is Castor.
Alouatta caraya is in the genus Alouatta. The first word of its scientific name is Alouatta. So, Alouatta caraya and Castor canadensis are not in the same genus.
Hystrix cristata is in the genus Hystrix. The... | B | 138 | |
Select the organism in the same species as the agile wallaby. | [
"Alouatta palliata",
"Macropus agilis",
"Lontra canadensis",
"None of the above",
"I don't know"
] | 1 | This organism is an agile wallaby. Its scientific name is Macropus agilis. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | An agile wallaby's scientific name is Macropus agilis.
Alouatta palliata does not have the same scientific name as an agile wallaby. So, Macropus agilis and Alouatta palliata are not in the same species.
Macropus agilis has the same scientific name as an agile wallaby. So, these organisms are in the same species.
Lontr... | B | 139 | |
Which ocean is highlighted? | [
"the Southern Ocean",
"the Arctic Ocean",
"the Indian Ocean",
"the Pacific Ocean",
"I don't know"
] | 2 | closed choice | grade6 | 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 Indian Ocean. | C | 140 | ||
Which colony was Middle Colonies? | [
"Pennsylvania",
"Maryland",
"Rhode Island",
"None of the above",
"I don't know"
] | 0 | The map below shows the Thirteen Colonies in 1750. | closed choice | grade4 | social science | us-history | English colonies in North America | Middle colonies: founding and government | The four Middle Colonies are dark blue on the map:
During colonial times, Delaware was usually called the Three Lower Counties on the Delaware, or the Lower Counties for short.
New York claimed part of the land that would later become the state of Vermont. But New Hampshire, a New England colony, also claimed this area... | A | 141 | ||
Which property matches this object? | [
"flexible",
"slippery",
"All of the above",
"None of the above",
"I don't know"
] | 0 | Select the better answer. | closed choice | grade3 | natural science | physics | Materials | Identify properties of an object | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. | Look at the object.
Think about each property.
A flexible object can be folded or bent without breaking easily. The spring is flexible.
A slippery object is hard to hold onto or stand on. The spring is not slippery. | A | 142 | |
What is the capital of New Hampshire? | [
"Concord",
"Augusta",
"Manchester",
"Boston",
"I don't know"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Northeast | Concord is the capital of New Hampshire. | A | 143 | |||
Complete the sentence.
The bee hummingbird is the () hummingbird. | [
"loudest",
"fastest",
"smallest",
"None of the above",
"I don't know"
] | 2 | Read the first part of the passage about hummingbirds.
The smallest bird in the world is the hummingbird. A hummingbird is as light as a piece of paper.
The smallest hummingbird is called the bee hummingbird. It is the same size as a big bug. | closed choice | grade1 | language science | reading-comprehension | Read-alone texts | Read passages about animals | The passage says the smallest hummingbird is called the bee hummingbird. | C | 144 | ||
Can Lithops bromfieldii cells make their own food? | [
"no",
"yes",
"All of the above",
"None of the above",
"I don't know"
] | 1 | This organism is Lithops bromfieldii. It is a member of the plant kingdom.
Lithops bromfieldii lives in South Africa. Each L. bromfieldii is made up of two brown or gray leaves. Because of its unusual appearance, L. bromfieldii is sometimes called a living stone. | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Lithops bromfieldii is a plant. Plant cells can make their own food. Plant cells make food using photosynthesis. | B | 145 | |
Identify the question that Evelyn's experiment can best answer. | [
"Can light bulbs stay lit longer when circuits include copper or when circuits include iron?",
"Do circuits that include iron produce dimmer light than circuits that include copper?",
"All of the above",
"None of the above",
"I don't know"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Evelyn built an electric circuit: she used wires to connect a battery to a light bulb, the light bulb to a small piece of copper, and the copper back to the battery. When the circuit was complete, the light turned on. E... | closed choice | grade7 | 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... | B | 146 | ||
Think about the magnetic force between the magnets in each pair. Which of the following statements is true? | [
"The strength of the magnetic force is the same in both pairs.",
"The magnetic force is weaker in Pair 2.",
"The magnetic force is weaker in Pair 1.",
"None of the above",
"I don't know"
] | 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. | closed choice | grade3 | natural science | physics | Magnets | Compare strengths 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 stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
You c... | Distance affects the strength of the magnetic force. When magnets are farther apart, the magnetic force between them is weaker.
The magnets in Pair 1 are farther apart than the magnets in Pair 2. So, the magnetic force is weaker in Pair 1 than in Pair 2. | C | 147 | |
Which continent is highlighted? | [
"Asia",
"North America",
"Africa",
"South America",
"I don't know"
] | 2 | closed choice | grade5 | social science | geography | Oceans and continents | Identify oceans and continents | A continent is one of the major land masses on the earth. Most people say there are seven continents. | This continent is Africa. | C | 148 | ||
Which country is highlighted? | [
"the Marshall Islands",
"the Federated States of Micronesia",
"Palau",
"Fiji",
"I don't know"
] | 2 | closed choice | grade8 | social science | geography | Oceania: geography | Identify and select countries of Oceania | This country is Palau. | C | 149 | |||
Which solution has a higher concentration of yellow particles? | [
"Solution A",
"Solution B",
"neither; their concentrations are the same",
"None of the above",
"I don't know"
] | 0 | The diagram below is a model of two solutions. Each yellow ball represents one particle of solute. | closed choice | grade6 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the yellow particles represent the solute. To figure out which solution has a higher concentration of yellow particles, look at both the number of yellow particles and the volume of the solvent in each container.
Use the concentration formula to find the number of yellow particles per mill... | A | 150 | |
Which i in column 1? | [
"the diner",
"the library",
"the theater",
"the park",
"I don't know"
] | 3 | closed choice | grade3 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The park is in column 1. | D | 151 | ||
Which of these states is farthest east? | [
"Utah",
"Montana",
"Oklahoma",
"Oregon",
"I don't know"
] | 2 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Oklahoma is farthest east. | C | 152 | ||
What can Lacey and Martin trade to each get what they want? | [
"Martin can trade his broccoli for Lacey's oranges.",
"Martin can trade his almonds for Lacey's tomatoes.",
"Lacey can trade her tomatoes for Martin's carrots.",
"Lacey can trade her tomatoes for Martin's broccoli.",
"I don't know"
] | 3 | 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.
Lacey and Martin open their lunch boxes in the school cafeteria. Neither Lacey nor Martin got everything that they wanted. The ta... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Lacey wants broccoli. Martin wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want. | D | 153 | ||
Select the organism in the same species as the green tree frog. | [
"Hyla cinerea",
"Atelopus zeteki",
"Bufo viridis",
"None of the above",
"I don't know"
] | 0 | This organism is a green tree frog. Its scientific name is Hyla cinerea. | closed choice | grade4 | natural science | biology | Scientific names | Use scientific names to classify organisms | Scientists use scientific names to identify organisms. Scientific names are made of two words.
The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits.
A genus is made up of one or more species. A species is a group of very similar organisms... | A green tree frog's scientific name is Hyla cinerea.
Bufo viridis does not have the same scientific name as a green tree frog. So, Hyla cinerea and Bufo viridis are not in the same species.
Hyla cinerea has the same scientific name as a green tree frog. So, these organisms are in the same species.
Atelopus zeteki does ... | A | 154 | |
What is the direction of this push? | [
"toward his hands",
"away from his hands",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Two friends are out in a park. One man walks. He uses a force to push the other man's wheelchair with his hands. | closed choice | grade4 | natural science | physics | Force and motion | Identify directions of forces | A force is a push or a pull that one object applies to another. Every force has a direction.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The walking man pushes the wheelchair. The direction of the push is away from his hands. | B | 155 | |
Which of the following could Dakota's test show? | [
"if the blade guards would break in a crash",
"how much the drone weighed with the blade guards",
"if adding the blade guards made the drone fly poorly",
"None of the above",
"I don't know"
] | 2 | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design.
The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques... | closed choice | grade8 | natural science | science-and-engineering-practices | Engineering practices | Evaluate tests of engineering-design solutions | People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured.
Imagine an engineer needs to design a... | C | 156 | ||
Is Oxalis acetosella made up of one cell? | [
"yes",
"no",
"All of the above",
"None of the above",
"I don't know"
] | 1 | This organism is Oxalis acetosella. It is a member of the plant kingdom.
Oxalis acetosella is commonly called wood sorrel. A wood sorrel plant has heart-shaped leaves and white flowers. Its flowers and leaves can fold up at night. Folding up helps protect the flowers and leaves from being eaten by insects. | yes or no | grade4 | natural science | biology | Classification | Describe, classify, and compare kingdoms | In the past, scientists classified living organisms into two groups: plants and animals. Over the past 300 years, scientists have discovered many more types of organisms. Today, many scientists classify organisms into six broad groups, called kingdoms.
Organisms in each kingdom have specific traits. The table below sho... | Oxalis acetosella is a plant. Plants are made up of many cells. | B | 157 | |
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 1.",
"The magnitude of the magnetic force is the same in both pairs.",
"The magnitude of the magnetic force is smaller in Pair 2.",
"None of the above",
"I don't know"
] | 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,... | Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them.
Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 2 than in Pair 1. So, the magnit... | C | 158 | |
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",
"None of the above",
"I don't know"
] | 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 | grade7 | 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 sample B has more mass than each particle in sample A. The particles in sample B also 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 ... | B | 159 | |
Which month has the lowest average precipitation in London? | [
"November",
"May",
"July",
"None of the above",
"I don't know"
] | 2 | Use the graph to answer the question below. | closed choice | grade4 | 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. Scientists collect data over many years. They can use this data to calculate the average precipitation for each month. The average precipitation can be used to describe the climate of a location.
A... | To describe the average precipitation trends in London, look at the graph.
Choice "May" is incorrect.
Choice "Jul" is incorrect.
Choice "Nov" is incorrect.
July has an average monthly precipitation of about 45 millimeters. This is lower than in any other month. So, July has the lowest average precipitation. | C | 160 | |
What is the capital of Nebraska? | [
"Bismarck",
"Lincoln",
"Omaha",
"Topeka",
"I don't know"
] | 1 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Midwest | Lincoln is the capital of Nebraska. | B | 161 | |||
Identify the question that Alvin's experiment can best answer. | [
"Does temperature affect how much bacteria can grow in liquid?",
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?",
"All of the above",
"None of the above",
"I don't know"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Alvin mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He a... | closed choice | grade6 | 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... | B | 162 | ||
Will these magnets attract or repel each other? | [
"repel",
"attract",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart. | closed choice | grade2 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south.
Here are some examples of magnets.... | Will these magnets attract or repel? To find out, look at which poles are closest to each other.
The south pole of one magnet is closest to the north pole of the other magnet. Poles that are different attract. So, these magnets will attract each other. | B | 163 | |
What is the capital of West Virginia? | [
"Topeka",
"Tallahassee",
"Charleston",
"Huntington",
"I don't know"
] | 2 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Southeast | Charleston is the capital of West Virginia. | C | 164 | |||
What is the capital of Missouri? | [
"Pierre",
"Kansas City",
"Jefferson City",
"Saint Louis",
"I don't know"
] | 2 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Midwest | Jefferson City is the capital of Missouri. | C | 165 | |||
Which solution has a higher concentration of blue particles? | [
"neither; their concentrations are the same",
"Solution B",
"Solution A",
"None of the above",
"I don't know"
] | 2 | The diagram below is a model of two solutions. Each blue ball represents one particle of solute. | closed choice | grade8 | natural science | chemistry | Solutions | Compare concentrations of solutions | A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution... | In Solution A and Solution B, the blue particles represent the solute. To figure out which solution has a higher concentration of blue particles, look at both the number of blue particles and the volume of the solvent in each container.
Use the concentration formula to find the number of blue particles per milliliter.
... | C | 166 | |
Which property do these three objects have in common? | [
"salty",
"smooth",
"flexible",
"None of the above",
"I don't know"
] | 0 | Select the best answer. | closed choice | grade4 | natural science | physics | Materials | Compare properties of objects | An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.
Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects... | Look at each object.
For each object, decide if it has that property.
A flexible object can be folded or bent without breaking easily. The fries are flexible, but the potato chips are not.
A smooth object is not scratchy or rough. The potato chips and the fries are not smooth.
Potato chips have a salty taste. All three... | A | 167 | |
What is the capital of South Carolina? | [
"Charleston",
"Columbia",
"Memphis",
"Atlanta",
"I don't know"
] | 1 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Southeast | Columbia is the capital of South Carolina. | B | 168 | |||
What is the capital of Massachusetts? | [
"Boston",
"Providence",
"Cambridge",
"Charlotte",
"I don't know"
] | 0 | closed choice | grade5 | social science | geography | State capitals | Identify state capitals of the Northeast | Boston is the capital of Massachusetts. | A | 169 | |||
Identify the question that Juan's experiment can best answer. | [
"Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?",
"Does temperature affect how much bacteria can grow in liquid?",
"All of the above",
"None of the above",
"I don't know"
] | 0 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Juan mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He al... | 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... | A | 170 | ||
Select the reptile below. | [
"giraffe",
"coral snake",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Reptiles have scaly, waterproof skin. Most reptiles live on land. A tortoise is an example of a reptile. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A coral snake is a reptile. It has scaly, waterproof skin.
A giraffe is a mammal. It has hair and feeds its young milk. | B | 171 | |
What can Harper and Adriana trade to each get what they want? | [
"Harper can trade her tomatoes for Adriana's broccoli.",
"Adriana can trade her broccoli for Harper's oranges.",
"Adriana can trade her almonds for Harper's tomatoes.",
"Harper can trade her tomatoes for Adriana's carrots.",
"I don't know"
] | 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.
Harper and Adriana open their lunch boxes in the school cafeteria. Neither Harper nor Adriana got everything that they wanted. Th... | closed choice | grade8 | social science | economics | Basic economic principles | Trade and specialization | Look at the table and images.
Harper wants broccoli. Adriana wants tomatoes. They can trade tomatoes for broccoli to both get what they want. Trading other things would not help both people get more items they want. | A | 172 | ||
Which of the following fossils is older? Select the more likely answer. | [
"ginkgo leaf",
"wood",
"All of the above",
"None of the above",
"I don't know"
] | 1 | This diagram shows fossils in an undisturbed sedimentary rock sequence. | closed choice | grade8 | natural science | earth-science | Fossils | Compare ages of fossils in a rock sequence | A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities.
Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t... | Look again at the fossils in the rock sequence diagram.
Compare the positions of these fossils to determine which one is older:
The wood fossil is in a deeper layer in the rock sequence than the ginkgo leaf fossil. So, the wood fossil is most likely older than the ginkgo leaf fossil. | B | 173 | |
Which animal is also adapted to be camouflaged among green leaves? | [
"green silver-line",
"fire salamander",
"All of the above",
"None of the above",
"I don't know"
] | 0 | Emerald tree boas live in the forests of South America. The tree boa is adapted to be camouflaged among green leaves.
Figure: emerald tree boa. | closed choice | grade3 | natural science | biology | Adaptations | Animal adaptations: skins and body coverings | An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors.
The color, texture, and covering of an animal's skin are examples of adaptations. Animals' skins can be adapted in different ways. For example, skin with thick fur might help an animal... | Look at the picture of the emerald tree boa.
The emerald tree boa has bright green scales covering its body. It is adapted to be camouflaged among green leaves. The word camouflage means to blend in.
Now look at each animal. Figure out which animal has a similar adaptation.
The green silver-line has a green body. It is... | A | 174 | |
Will these magnets attract or repel each other? | [
"repel",
"attract",
"All of the above",
"None of the above",
"I don't know"
] | 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 south pole of the other magnet. Opposite poles attract. So, these magnets will attract each other. | B | 175 | |
Which of these states is farthest east? | [
"Wisconsin",
"Washington",
"Pennsylvania",
"Utah",
"I don't know"
] | 2 | closed choice | grade2 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the east arrow is pointing. Pennsylvania is farthest east. | C | 176 | ||
Which material is this coat made of? | [
"concrete",
"metal",
"All of the above",
"None of the above",
"I don't know"
] | 1 | closed choice | grade3 | natural science | physics | Materials | Identify multiple materials in objects | A material is a type of matter. Wood, glass, metal, and plastic are common materials.
Some objects are made of just one material.
Most nails are made of metal.
Other objects are made of more than one material.
This hammer is made of metal and wood. | Look at the picture of the coat.
The coat is made of two materials. The buckle is made of metal. The rest of the coat is made of wool.
Wool comes from the fluffy coats of sheep! First, a farmer cuts the sheep's coats. Then, the wool is spun into yarn. The yarn can be dyed and used to make clothes. | B | 177 | ||
Which of the following could Manuel's test show? | [
"which design would have the greatest distance between the concert area and the road",
"which design would have the least traffic noise in the concert area",
"if at least 20% of the park would be shaded by trees in each design",
"None of the above",
"I don't know"
] | 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... | A | 178 | ||
Which of the following organisms is the tertiary consumer in this food web? | [
"copepod",
"rotifer",
"green algae",
"None of the above",
"I don't know"
] | 0 | Below is a food web from Little Rock Lake, a freshwater lake ecosystem in Wisconsin.
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 | grade5 | natural science | biology | Ecosystems | 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... | Tertiary consumers eat secondary consumers. So, in a food web, tertiary consumers have arrows pointing to them from secondary consumers. Secondary consumers have arrows pointing to them from primary consumers. And primary consumers have arrows pointing to them from producers.
The copepod has an arrow pointing to it fro... | A | 179 | |
Which type of relationship is formed when a megabat eats a fig and drops the fig tree's seeds in a new location? | [
"parasitic",
"mutualistic",
"commensal",
"None of the above",
"I don't know"
] | 1 | Read the passage. Then answer the question.
Megabats are large-bodied bats that eat fruit, including figs.
When a megabat eats a fig, it may also swallow the seeds inside the fig. The bat gets energy from the fruit but cannot digest the seeds. The seeds pass through the bat's digestive system and are disposed of in it... | closed choice | grade7 | natural science | biology | Ecological interactions | Classify symbiotic relationships | When two organisms of different species interact in a way that affects one or both organisms, they form a symbiotic relationship. The word symbiosis comes from a Greek word that means living together. Scientists define types of symbiotic relationships based on how each organism is affected.
This table lists three commo... | When a megabat eats a fig, the megabat gets the food it needs to survive and grow. So the megabat benefits from its relationship with the fig tree.
Both the fig tree and its seeds have a better chance of surviving when the bat moves the seeds to a new location. So, the fig tree also benefits from its relationship with ... | B | 180 | |
Select the mammal below. | [
"giraffe",
"green tree frog",
"All of the above",
"None of the above",
"I don't know"
] | 0 | Mammals have hair or fur and feed their young milk. A zebra is an example of a mammal. | closed choice | grade3 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A green tree frog is an amphibian. It has moist skin and begins its life in water.
There are many kinds of tree frogs. Most tree frogs are very small. They can walk on thin branches.
A giraffe is a mammal. It has hair and feeds its young milk.
Giraffes eat mostly leaves that are too high up for other animals to reach. | A | 181 | |
What is the capital of South Dakota? | [
"Pierre",
"Newark",
"Charleston",
"Sioux Falls",
"I don't know"
] | 0 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Midwest | Pierre is the capital of South Dakota. | A | 182 | |||
Select the organism in the same species as the pink-backed pelican. | [
"Strix uralensis",
"Pelecanus rufescens",
"Ardea cinerea",
"None of the above",
"I don't know"
] | 1 | This organism is a pink-backed pelican. Its scientific name is Pelecanus rufescens. | closed choice | grade7 | 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 pink-backed pelican's scientific name is Pelecanus rufescens.
Pelecanus rufescens has the same scientific name as a pink-backed pelican. So, these organisms are in the same species.
Strix uralensis does not have the same scientific name as a pink-backed pelican. So, Pelecanus rufescens and Strix uralensis are not in ... | B | 183 | |
Which of these states is farthest north? | [
"Louisiana",
"Michigan",
"Illinois",
"New Mexico",
"I don't know"
] | 1 | closed choice | grade3 | social science | geography | Geography | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Michigan is farthest north. | B | 184 | ||
Identify the question that Cameron's experiment can best answer. | [
"Can pennies hold more drops of water mixed with dish soap or water mixed with hand soap?",
"Can pennies hold more drops of pure water or water mixed with hand soap?",
"All of the above",
"None of the above",
"I don't know"
] | 1 | The passage below describes an experiment. Read the passage and then follow the instructions below.
Cameron used a dropper to put equal-sized drops of pure water, one at a time, onto a penny. The drops stayed together and formed a dome on the penny's surface. Cameron recorded the number of drops he could add before th... | closed choice | grade7 | 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... | B | 185 | ||
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.",
"None of the above",
"I don't know"
] | 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 shapes. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Compare magnitudes of magnetic forces | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces.
The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,... | Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magnitude of the magnetic force between them is smaller.
There is a greater distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is smaller in Pair 1 than in Pair 2. | C | 186 | |
What is the expected ratio of offspring with a white body to offspring with a brown body? Choose the most likely ratio. | [
"4:0",
"3:1",
"0:4",
"2:2",
"1:3"
] | 2 | In a group of Channel catfish, some individuals have a brown body and others have a white body. In this group, the gene for the body color trait has two alleles. The allele for a white body (b) is recessive to the allele for a brown body (B).
This Punnett square shows a cross between two Channel catfish. | closed choice | grade8 | natural science | biology | Genes to traits | Use Punnett squares to calculate ratios of offspring types | Offspring phenotypes: dominant or recessive?
How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a... | To determine how many boxes in the Punnett square represent offspring with a white body or a brown body, consider whether each phenotype is the dominant or recessive allele's version of the body color trait. The question tells you that the b allele, which is for a white body, is recessive to the B allele, which is for ... | C | 187 | |
What is the capital of Montana? | [
"Billings",
"Salem",
"Honolulu",
"Helena",
"I don't know"
] | 3 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Helena is the capital of Montana. | D | 188 | |||
What is the capital of Maine? | [
"Augusta",
"Portland",
"Savannah",
"Louisville",
"I don't know"
] | 0 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the Northeast | Augusta is the capital of Maine. | A | 189 | |||
Is a pair of jeans a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid",
"None of the above",
"I don't know"
] | 2 | closed choice | grade4 | natural science | physics | States of matter | Identify and sort solids, liquids, and gases | Solid, liquid, and gas are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | A pair of jeans is a solid. You can fold a pair of jeans. But it will still have a size and shape of its own. | C | 190 | ||
Which type of force from the uncle slides the sled along behind him? | [
"push",
"pull",
"All of the above",
"None of the above",
"I don't know"
] | 1 | An uncle plays with his nieces on the beach. He applies a force to the rope on their sled. The sled slides along behind him. | closed choice | grade3 | natural science | physics | Force and motion | Identify pushes and pulls | A force is a push or a pull that one object applies to a second object.
The direction of a push is away from the object that is pushing.
The direction of a pull is toward the object that is pulling. | The uncle applies a force to the rope on the sled. The sled slides along behind him. The direction of this force is toward the uncle. This force is a pull. | B | 191 | |
Which i in row C? | [
"the library",
"the restaurant",
"the park",
"the grocery store",
"I don't know"
] | 1 | closed choice | grade2 | social science | geography | Geography | Use a letter-number grid | A grid is made up of lines of squares. They are organized in rows and columns. A grid can help you use a map.
A row is a line of squares that goes from side to side. Rows are marked with letters.
A column is a line of squares that goes up and down. Columns are marked with numbers. | The restaurant is in row C. | B | 192 | ||
Will these magnets attract or repel each other? | [
"repel",
"attract",
"All of the above",
"None of the above",
"I don't know"
] | 0 | Two magnets are placed as shown. | closed choice | grade4 | natural science | physics | Magnets | Identify magnets that attract or repel | Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart.
Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles: north and south.
Here are some examples of magnets. The no... | To predict if these magnets will attract or repel, look at which poles are closest to each other.
The 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. | A | 193 | |
Which of these oceans does the prime meridian intersect? | [
"the Indian Ocean",
"the Arctic Ocean",
"the Pacific Ocean",
"None of the above",
"I don't know"
] | 1 | closed choice | grade4 | social science | geography | Maps | Use lines of latitude and longitude | Lines of latitude and lines of longitude are imaginary lines drawn on some globes and maps. They can help you find places on globes and maps.
Lines of latitude show how far north or south a place is. We use units called degrees to describe how far a place is from the equator. The equator is the line located at 0° latit... | The prime meridian is the line at 0° longitude. It intersects the Arctic Ocean. It does not intersect the Pacific Ocean or the Indian Ocean. | B | 194 | ||
Select the bird below. | [
"African bullfrog",
"pelican",
"All of the above",
"None of the above",
"I don't know"
] | 1 | Birds have feathers, two wings, and a beak. An ostrich is an example of a bird. | closed choice | grade2 | natural science | biology | Classification | Identify mammals, birds, fish, reptiles, and amphibians | Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common.
Scientists sort animals into groups based on traits they have in common. This process is called classification. | A pelican is a bird. It has feathers, two wings, and a beak.
An African bullfrog is an amphibian. It has moist skin and begins its life in water. | B | 195 | |
Is the following statement about our solar system true or false?
The volume of Earth is more than ten times the volume of Mercury. | [
"true",
"false",
"All of the above",
"None of the above",
"I don't know"
] | 0 | Use the data to answer the question below. | true-or false | grade8 | 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 volume of a planet is a very large quantity. Large quantities such as this are often written in scientific notation.
For ex... | To determine if this statement is true, calculate the value of ten times the volume of Mercury.
Then compare the result to the volume of Earth. The volume of Earth is 1.08 x 10^12 km^3, which is greater than 6.08 x 10^11 km^3. So, the volume of Earth is more than ten times the volume of Mercury. | A | 196 | |
Is a rubber duck a solid or a liquid? | [
"a solid",
"a liquid",
"All of the above",
"None of the above",
"I don't know"
] | 0 | closed choice | grade2 | natural science | physics | States of matter | Classify matter as solid or liquid | Solid and liquid are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms.
When matter is a solid, it has a shape of its own.
Some solids can be bent or broken easily. Others are hard to bend or break.
A glass cup is a solid. A sock is also a solid.
When matter is a li... | A rubber duck is a solid. You can squeeze a rubber duck. But it will still have a size and shape of its own. | A | 197 | ||
What can Max and Edmond trade to each get what they want? | [
"Max can trade his tomatoes for Edmond's broccoli.",
"Max can trade his tomatoes for Edmond's sandwich.",
"Edmond can trade his broccoli for Max's oranges.",
"Edmond can trade his almonds for Max's tomatoes.",
"I don't know"
] | 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.
Max and Edmond open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Max wanted brocc... | closed choice | grade6 | social science | economics | Basic economic principles | Trade and specialization | Max wanted broccoli in his lunch and Edmond was hoping for tomatoes. Look at the labeled part of the images.
Max has tomatoes. Edmond 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. | A | 198 | ||
Which of these states is farthest west? | [
"Michigan",
"Arkansas",
"Alabama",
"North Dakota",
"I don't know"
] | 3 | closed choice | grade5 | social science | geography | Maps | Read a map: cardinal directions | Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west.
A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction.
The north arrow points to the North Pole. On most maps, north... | To find the answer, look at the compass rose. Look at which way the west arrow is pointing. North Dakota is farthest west. | D | 199 |
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