Biogeochemical Cycles Worksheet
An 11th-grade science worksheet covering the carbon, nitrogen, phosphorus, and water cycles, their components, and human impact.
Includes
Standards
Topics
Biogeochemical Cycles
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Date:
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Read each question carefully and answer to the best of your ability. This worksheet covers key concepts related to biogeochemical cycles.
Refer to the diagram below to answer the following questions.
1. Which of the following processes releases carbon dioxide into the atmosphere?
Photosynthesis
Respiration
Nitrogen Fixation
Precipitation
2. The conversion of atmospheric nitrogen into ammonia or other nitrogenous compounds by microorganisms is called:
Denitrification
Nitrification
Nitrogen Fixation
Assimilation
3. The primary reservoir for phosphorus in the biosphere is .
4. Transpiration is the process by which plants release water vapor into the atmosphere through their .
5. Human activities such as the burning of fossil fuels have significantly increased the amount of carbon dioxide in the atmosphere.
True
False
6. The water cycle is primarily driven by solar energy.
True
False
7. Briefly explain the role of decomposers in biogeochemical cycles.
Match each term with its correct definition.
8. Evaporation
A. The process of water vapor turning into liquid water.
9. Condensation
B. The process of liquid water turning into water vapor.
10. Runoff
C. Water flowing over the land surface.
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