Which energy path shows one way energy can get to a light bulb? a. sun → water → dam → light bulb b. sun → air → wind turbine → light bulb c. sun → corn → ethanol plant → light bulb d. all of the above

All of the above

Explanation:

The sun makes the corn grow. Corn ethanol in the US is mostly produced by dry milling. Dry milling is a process where the corn is ground into flour, after which water, ammonia, and yeast are added. The purpose of the ammonia is to control the pH levels for the yeast and feed it. Yeast is there to make the ethanol for the plant. After that the ethanol plant makes electricity that powers the light bulb.

In the case of a dam, the water cycle is directly driven by the sun's energy. Dams work by converting the kinetic energy of the running water into electricity. In summary hydroelectric energy is the combination of heat energy of the sun and the gravity of the Earth.

Wind is directly reliant on the sun. When the sun warms the earth hot air rises and when that hot air cools down it takes the place of the hot air below it. The force that is produced by moving cold air is wind that turns the turbine and produces electricity.

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