AP Environmental Science: Sulfur Cycle Practice Questions

📚 Topic Summary

The sulfur cycle is a biogeochemical cycle that describes the movement of sulfur through the environment. Sulfur is an essential element for all living organisms, as it is a component of many proteins and enzymes. The cycle involves various processes, including the release of sulfur from rocks through weathering, the absorption of sulfur by plants and microorganisms, and the release of sulfur back into the atmosphere through decomposition and volcanic eruptions. Human activities, such as burning fossil fuels and mining, can also significantly impact the sulfur cycle, leading to environmental problems like acid rain.

Understanding the sulfur cycle is crucial in AP Environmental Science because it highlights the interconnectedness of environmental processes and the impact of human activities on these processes. A strong grasp of this cycle helps in predicting and mitigating environmental issues related to sulfur pollution.

🧪 Part A: Vocabulary

Match the following terms with their definitions:

1. Term: Sulfide
2. Term: Sulfate
3. Term: Sulfur Dioxide
4. Term: Dimethyl Sulfide (DMS)
5. Term: Hydrogen Sulfide

1. Definition: A gas produced by anaerobic decomposition, often smelling like rotten eggs.
2. Definition: An inorganic sulfur compound that is a major component of acid rain.
3. Definition: An anion containing sulfur and oxygen, often found in minerals and fertilizers.
4. Definition: A volatile organic sulfur compound produced by phytoplankton, influencing cloud formation.
5. Definition: A compound containing sulfur and another element, typically a metal.

📝 Part B: Fill in the Blanks

Complete the following paragraph with the correct terms:

The sulfur cycle involves the transformation of sulfur through various oxidation states. Sulfur is released from rocks through __________. Plants absorb sulfur in the form of __________. Decomposition processes release sulfur back into the environment as __________. Human activities, such as burning __________ fuels, release __________ into the atmosphere, contributing to acid rain.

🌍 Part C: Critical Thinking

How do human activities impact the sulfur cycle, and what are the environmental consequences of these impacts?