6
lesson pretestMultiple Choice

Pretest

Question 6 • Physics

What do hydroelectric plants use to generate electrical energy?

Answer
A
natural gas
B
falling water
C
fission of uranium
D
wind

Explanation

Hydroelectric plants use the energy of moving water to turn turbines, which drive generators to produce electricity. Often, the water falls from a higher level to a lower one, so the correct choice is falling water. Natural gas, uranium fission, and wind are used by other types of power plants.

AI-written and checked against the verified answer.

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