AP Environmental Science : Dams

Study concepts, example questions & explanations for AP Environmental Science

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Example Questions

Example Question #1 : Hydroelectric Energy

All of the following are potential benefits to dams EXCEPT __________.

Possible Answers:

Recreation opportunities from the resulting lake

Sedimentation buildup

Water level management

Clean electricity generation

Flood control

Correct answer:

Sedimentation buildup

Explanation:

Dams can be huge boons to local economies, and are a landmark of human engineering and achievement; however, they do carry serious consequences to the natural environment. They lead to sediment buildup, which hurts the flow of nutrients downstream, ruins the natural riverscape, and can cause the area behind the dam to become more shallow.

Example Question #2 : Hydroelectric Energy

All of the following are drawbacks to dams EXCEPT __________.

Possible Answers:

Local inhabitants may be forced to move

Interruption of migration patterns among fish

Habitat alteration

Destruction of surrounding farmland

Increased air pollution

Correct answer:

Increased air pollution

Explanation:

Dams carry numerous drawbacks, but one benefit of dams that they do not increase air pollution. Hydroelectric power is considered to be one of the cleanest forms of energy.

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