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Carbon Cycle Worksheet

Explore the processes of the carbon cycle, including photosynthesis, respiration, decomposition, and combustion, and understand its importance in Earth's systems.

Grade 9 Science Earth & Space ScienceCarbon Cycle
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Standards

HS-LS2-5HS-ESS2-6
8 sections · Free to use · Printable
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Carbon Cycle Worksheet

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Read each question carefully and answer to the best of your ability. Refer to the provided diagram where applicable.

1. Which process removes carbon dioxide from the atmosphere?

a

Respiration

b

Combustion

c

Photosynthesis

d

Decomposition

2. Which of the following is a major reservoir for carbon on Earth?

a

Nitrogen gas

b

Oceans

c

Water vapor

d

Oxygen gas

3. Plants absorb carbon dioxide from the atmosphere during the process of  .

4. When organisms die, decomposers break down their organic matter, releasing carbon back into the   and soil.

5. The burning of fossil fuels releases large amounts of   into the atmosphere.

6. The carbon cycle is a one-way process where carbon is permanently removed from the Earth's systems.

T

True

F

False

7. Animals contribute to the carbon cycle by releasing carbon dioxide through respiration.

T

True

F

False

8. Explain the role of decomposers in the carbon cycle.

9. Describe how human activities, such as burning fossil fuels, impact the global carbon cycle.

Use the words below to complete the sentences.

photosynthesis
respiration
combustion
atmosphere
decomposers
fossil fuels

10. Plants use   to convert carbon dioxide into glucose.

11. Animals release carbon dioxide through the process of  .

12. The burning of   releases stored carbon into the air.