Carbon Cycle Worksheet

What is the movement of carbon from one reservoir to another called?

• Carbon cycle

• Water cycle

• Nitrogen cycle

• Oxygen cycle

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NGSS.MS-LS1-6

Which of the following is NOT considered a carbon reservoir?

• Plastic bottles

• Plants

• Animals

• Rocks and minerals

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

How do plants use carbon in their life processes?

• To build leaves and stems

• To produce electricity

• To make water

• To create sound

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NGSS.MS-LS1-6

NGSS.MS-LS1-7

What happens to carbon when animals die and decompose?

• It becomes sediment and may eventually form fossil fuels

• It disappears from the planet

• It turns into oxygen

• It floats into space

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NGSS.MS-LS2-3

NGSS.MS-ESS2-1

Why does the total amount of carbon on Earth never change?

• Because Earth is a closed system

• Because carbon is constantly created

• Because carbon is destroyed by sunlight

• Because carbon only exists in the atmosphere

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NGSS.MS-LS2-3

Why is the carbon cycle vital to life on Earth?

• It helps maintain a balance of carbon, making the planet hospitable for life.

• It increases the amount of oxygen in the atmosphere.

• It prevents the formation of fossil fuels.

• It causes global warming directly.

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NGSS.MS-LS1-6

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NGSS.MS-ESS2-1

What do scientists believe has upset the natural carbon balance on Earth?

• Planting more trees

• Burning fossil fuels

• Increasing rainfall

• Reducing animal populations

What happens when fossil fuels like coal, oil, and natural gas are burned?

• Carbon is absorbed by the atmosphere

• Carbon is released back into the atmosphere

• Oxygen is released into the atmosphere

• Water vapor is reduced

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NGSS.HS-ESS2-6

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What is the result of adding more carbon to the atmosphere than usual?

• Decreased rainfall

• Climate change and global warming

• Increased plant growth

• Lower temperatures

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How does nature tend to keep carbon levels balanced?

• By increasing fossil fuel use

• By ensuring the amount of carbon released from reservoirs equals the amount absorbed

• By reducing the number of plants

• By increasing volcanic eruptions

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NGSS.MS-LS1-6

NGSS.MS-LS2-3