Question

exam lesson name: energy conversions
exam number: 700697rr
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▶ exam instructions
question 11 of 20 :
select the best answer for the question.

1. dams are large structures located along rivers that use the rivers flow to turn turbines and generate electricity. dams are an example of

○ a. hydroelectric energy.
○ b. batteries.
○ c. potential mechanical energy.
○ d. wind energy.
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Explanation:

To solve this, we analyze each option:

• Option A: Hydroelectric energy uses water flow (like from rivers at dams) to turn turbines and generate electricity, which matches the dam's function.
• Option B: Batteries store chemical energy, not related to river flow for electricity generation.
• Option C: Potential mechanical energy is about stored energy (e.g., in a raised object), not the process of using river flow for electricity.
• Option D: Wind energy uses wind, not river flow.

So the correct answer is A as dams using river flow for electricity generation is hydroelectric energy.

Answer:

A. hydroelectric energy.