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Q. |
The temperature of water at the bottom of a large waterfall is higher than that of the water at the top, because – |
A. | the falling water absorbs heat from the Sun. |
B. | the water at the bottom has greater potential energy. |
C. | the kinetic energy of the falling water is converted into heat. |
D. | rocks on the bed of the river give out heat. |
Answer» C. the kinetic energy of the falling water is converted into heat. | |
Explanation: The water gains kinetic energy as it falls down and loses its potential energy. Assuming no other losses, part of the kinetic energy gain of water is converted into heat, raising the temperature of water. |
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