Physics Middle School

How is energy causing motion or creating a change in this image?

a stream of moving water with branches and small rocks
Public Domain

Energy from a car engine causes the water and small rocks and branches to move.
Energy from rocks and branches causes water to flow.
Energy from flowing water moves the small rocks and branches.
Energy from the sun causes the water to flow and the small rocks and branches to move.

Answers

Answer 1

Answer:

Energy from flowing water moves the small rocks and branches.

Explanation:

Energy from a car engine causes the water and small rocks and branches to move. Since when are natural streams powered by car engines?

Energy from rocks and branches causes water to flow. The rocks are providing energy?

Energy from flowing water moves the small rocks and branches. The water is flowing and taking stuff with it.

Energy from the sun causes the water to flow and the small rocks and branches to move. How would energy from the sun cause water to move in this manner?

Answer 2

The energy causing motion or creating a change in this image is the energy from flowing water moves the small rocks and branches.

Option A is incorrect because there is no car engine seen in the image. Option B is incorrect because the rocks and branches does not have any initial energy to provide to water. Option D is incorrect because the sun cannot provide kinetic energy. It can only provide heat energy.

Option C is correct because the kinetic energy of flowing water is transferred to convert the potential energy of rocks and branches to kinetic energy and thus resulting in the movement of rocks and branches.

Therefore, the energy causing motion or creating a change in this image is the energy from flowing water moves the small rocks and branches.

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