The Carbon Cycle Worksheet
An 11th-grade science worksheet focusing on the carbon cycle, its processes, reservoirs, and human impact.
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Topics
The Carbon Cycle
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Read each question carefully and provide thoughtful, detailed answers. Refer to the provided diagram where necessary.
Observe the diagram of the carbon cycle below and answer the questions that follow.
1. Identify two major reservoirs of carbon shown in the diagram.
2. Describe the process by which carbon moves from the atmosphere to terrestrial plants.
Complete the following sentences with the appropriate terms related to the carbon cycle.
1. The process of converting atmospheric carbon dioxide into organic compounds by plants is called .
2. When organisms die, decomposers break down organic matter, returning carbon to the soil and atmosphere through .
3. The burning of fossil fuels releases large amounts of into the atmosphere.
Choose the best answer for each question.
1. Which of the following is NOT a significant carbon sink?
Oceans
Forests
Atmosphere
Lithosphere
2. How do human activities primarily impact the carbon cycle?
By increasing photosynthesis
By reducing ocean absorption of CO2
By releasing stored carbon from fossil fuels
By enhancing volcanic activity
Answer the following questions in 2-3 sentences.
1. Explain the role of decomposers in the carbon cycle.
2. Describe one natural process that contributes to the release of carbon dioxide into the atmosphere.
Indicate whether each statement is True (T) or False (F).
1. The oceans are the largest active reservoir of carbon on Earth.
True
False
2. Deforestation contributes to an increase in atmospheric carbon dioxide.
True
False
Discuss the potential consequences of an imbalance in the carbon cycle, specifically addressing the impact of increased atmospheric carbon dioxide on global climate.