Hydroelectric power is one of the largest sources of renewab - GED Practice Questions
Question
Hydroelectric power is one of the largest sources of renewable energy that utilizes the kinetic energy of water to generate electricity. To determine the amount of electric current generated, a scientist developed a tin water wheel and attached a mass to its end. he poured water to the wheels using a small and large funnel. However, after several trials, he realized that for the wheel to spin, water had to be poured on specific locations of the wheel.
The results of the study were as follows;
When the scientist used a 70kg weight at the end of the string, it took 11s for the wheel to raise a weight using the small funnel. However, for the large funnel it only took 7s. Therefore, he concluded that amount of water that came into contact with the wheel had a significant impact on the amount of the energy produced.
Which piece of evidence from the passage supports the hypothesis that energy produced from the water wheel will lift the weight?
Answers
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Explanation
From the explanation, it is clear that water flow was directly proportional to the size of funnel, thus influencing the amount of energy produce.
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