Food Web and Energy Flow

Energy flows and matter _____ within and among the planet’s systems.

• warms

• cycles

• cools

• walks

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NGSS.MS-ESS2-1

NGSS.MS-LS2-3

NGSS.MS-ESS2-4

Energy and matter move all over the planet. Which of the following best describes what the result of this movement is?

• the Moon's shape

• starlight

• all of Earth's processes

• the Sun's energy

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Carbon can move from air to plants to animals when plants take in carbon dioxide from the air to make food and when animals eat plants. Which of the following best explains why carbon can move in this way from one Earth system to another?

• Because Earth has many elements, carbon is among many that create energy on the planet.

• Earth’s processes are the result of energy flowing and matter cycling within the planet’s systems.

• Carbon is essential to all plants due to its role in the process of photosynthesis.

• Traces of carbon have been found in Earth’s air and in outer space.

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NGSS.MS-ESS2-1

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Energy flows throughout Earth’s systems in the processes of convection, _____ , and radiation.

• snow

• continental drift

• rain

• conduction

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NGSS.MS-PS3-4

NGSS.MS-PS3-3

This diagram shows the processes that allow energy to flow through Earth’s systems. What is the difference between convection and conduction? When cold water is placed on a hot stove, convection happens as hot water at the bottom of the pot moves upward to displace colder water, but _____ .

• conduction happens as heat moves through the collision of particles

• conduction happens as the movement of heat slows down

• conduction happens as heat turns into steam

• conduction happens as heat moves in a circular pattern

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which two kinds of changes happen as energy flows and matter cycles through Earth’s systems?

• chemical and physical

• temperature and pressure

• geography and habitat

• climate and weather

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

This image shows a food web and many of the organisms that are working together in an ecosystem. Which of the following is getting energy and matter from the mouse?

• insects

• grass

• fox

• frog

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NGSS.MS-LS2-3

The food web in this image shows many of the organisms that are working together in an ecosystem. If the tree were to die and no longer be part of the food web, then the squirrel population would most likely _____ , because _____ .

• increase; foxes could more easily find and eat squirrels

• decrease; squirrels would no longer be able to eat from the tree and would struggle to stay alive

• decrease and then increase; owls would switch to eating squirrels

• stay the same; squirrels do not rely on the tree

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Three main types of _____ allow the flow of energy and the cycling of matter in an ecosystem.

• living things

• water

• soil

• air

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

The _____ that make up living things can move from living to nonliving things.

• trees

• atoms

• zebras

• bacteria

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NGSS.MS-PS1-1