Carbon Cycle Quiz

Which process in the carbon cycle involves plants taking in carbon dioxide and releasing oxygen?

• Respiration

• Photosynthesis

• Combustion

• Decomposition

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DOK Level 1: Recall

What is the primary impact of burning fossil fuels on the carbon cycle?

• It decreases the amount of carbon dioxide in the atmosphere.

• It increases the amount of carbon dioxide in the atmosphere.

• It has no effect on the carbon cycle.

• It decreases the amount of oxygen in the atmosphere.

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DOK Level 1: Recall

Explain how human activities such as deforestation affect the carbon cycle.

• They increase the number of carbon sinks.

• They decrease the amount of carbon dioxide in the atmosphere.

• They reduce the number of trees that can absorb carbon dioxide, increasing atmospheric CO2 levels.

• They have no significant impact on the carbon cycle.

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DOK Level 2: Skill/Concept

Which of the following is considered a carbon sink?

• Factories

• Oceans

• Automobiles

• Power plants

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DOK Level 1: Recall

Describe the role of respiration in the carbon cycle.

• It converts carbon dioxide into oxygen.

• It releases carbon dioxide into the atmosphere.

• It stores carbon in the form of fossil fuels.

• It removes carbon dioxide from the atmosphere.

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DOK Level 2: Skill/Concept

Analyze the effect of increased carbon dioxide levels on global temperatures and provide reasoning for your answer.

• Increased CO2 levels lead to lower global temperatures because CO2 reflects sunlight.

• Increased CO2 levels lead to higher global temperatures because CO2 traps heat in the atmosphere.

• Increased CO2 levels have no effect on global temperatures.

• Increased CO2 levels lead to higher global temperatures because CO2 absorbs sunlight.

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DOK Level 3: Strategic Thinking

Which human activity is most directly responsible for increasing carbon dioxide levels in the atmosphere?

• Planting trees

• Using solar panels

• Burning fossil fuels

• Recycling

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DOK Level 1: Recall

Evaluate the effectiveness of using renewable energy sources in reducing the impact of human activities on the carbon cycle.

• Renewable energy sources are ineffective because they still produce carbon dioxide.

• Renewable energy sources are effective because they do not produce carbon dioxide and reduce reliance on fossil fuels.

• Renewable energy sources are effective only if used in combination with fossil fuels.

• Renewable energy sources are ineffective because they are too expensive to implement.

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DOK Level 3: Strategic Thinking