All the sources of energy present on the earth are the cause of solar energy.justify this statement with exanples.
Answers
Answer:GOAL:
To be aware of the different forms of energy and the time frame necessary for the development of these energy forms.
OBJECTIVE:
1. The student will become familiar with different forms of energy.
2. The student will understand the sources of energy.
3. The student will acquire an understanding of the history of various sources of energy.
LESSON / INFORMATION:
Are energy sources renewable or nonrenewable? You can decide for yourself. If a source of energy is replaced as we use it, so that we can never use it up, it is called renewable. If there is a definite, limited supply of a source of energy, and it cannot be replaced, it is called nonrenewable. This is an important idea, because it helps us to decide how we should use each of our many sources of energy.
Energy is all around us and comes from many sources. One of the most important sources of energy is the sun. The energy of the sun is the original source of most of the energy found on earth.
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We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells.
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The sun heats the earth's surface and the Earth heats the air above it, causing wind.
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Water evaporated by the sun forms clouds and rain to give us flowing streams and rivers. Both wind and flowing water (hydropower) are sources of energy.
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So you see, the sun is the source of many kinds of energy found in nature. These kinds of energy are around us all the time. They are produced quickly, and replace themselves constantly as we use them. For this reason we say they are renewable.
The sun's energy can also be stored. Plants store energy from the sun as they grow. Fruits, vegetables and wood from trees, for example, all contain stored solar energy. We call it biomass energy, from "bio" for "life" or "living". These kinds of energy are also renewable, but of course it takes longer to grow a plant or a tree than it does to get heat directly from sunlight.
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