Solar Energy

Essay by MarzHigh School, 10th gradeF, January 1996

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Solar Energy

Solar energy is energy that comes from the sun. This is good for the environment

because it is not using up fossil fuels, and the sun's energy cannot be wasted. Just recently

in the 19th and 20th centuries, people began to re- examine solar energy to fit more ways

to capture and use it.

Solar energy is a renewable source, which means it is good for the environment.

Coal, oil, and natural gases are other recourses, which when burned are used for energy.

However, these resources are limited, and we will soon run out of the natural gases. The

gas and fuel that cars run on are very harmful to the atmosphere and add to the

greenhouse effect. The greenhouse effect causes pollution and unnatural heating of the

earth. the only way to prevent this from occurring is to promote the use of solar energy.

Researchers are interested in changing the sunlight into electricity.

Many methods of

sending heat through air are presently being tested in Israel and Spain.

My prediction is that solar energy will become more common in the future because

there is a limit to the fossil fuels. There is no limit to the sun's energy.

Solar energy is heat and light and electromagnetic radiation, which comes from

the sun. Even though there is no cost for the sun to shine, it is very expensive to turn

those rays into harnessed energy. Solar panels have to face the sun directly for them to

work effectively. Solar cells use materials, like silicone which are semiconductors to

change sunlight into electricity.

Solar energy can also work on days when the sun isn't out. Scientists at the

Weizman Institute in Israel found a new way of storing solar power. They circulate water

through collector plates with...