Heat plays a very important role in our daily lives as a heating system that keeps us warm in winter,in the summer we prefer to keep the house temperature lower by using the air conditioning system,heat engines generate power for cars, trucks, trains, diesel, certain heat engine running dynamo that generates electricity,electricity operate factory machinery, and other tools, our lives a lot depends on the heat,actually our own body is a heat engine, the food we eat is the fuel so that our bodies are still warm and provide energy for our activities
THE SUN - SOURCE heat
The sun is a giant ball made up of hydrogen and helium gas. The sun is a white star that acts as the center of our solar system. All components including the solar system planets and their satellites, asteroids, comets and space dust rotating around the Sun. not only as a center, the Sun is also a source of energy for life. The sun warms the earth's heat and shape the climate, while the light is illuminating the Earth and is used by plants for photosynthesis. Without the sun, there would be no life on Earth because many chemical reactions cannot take place.
The sun is the biggest heat sources we know, as a source of direct heat, the sun sustains life on this planet from 1500.000.000 kilometer distance. the sun is also an indirect heat source because heat the earth come from the sun, from the sun we have to trace some heat source inside the earth that came through volcanoes, geysers, hot springs,etc
The sun is also the source of the heat stored in the fuel such as coal and petroleum, coal comes from plants that thrives on karboniforus period of more than 200 million years ago, at the time the big trees and various types of plants growing in a swamp which covers most of the earth's surface. Through photosynthesis these plants produce food with the help of sunlight and thus keep energy solar radiation, the plants and the remains still piled in the swamp and only partially decayed, the plants in the next century were became part of the earth's crust and since the influence heat and pressure, the plant was converted into coal
In fact, the heat generated by electricity from the sun as well, most of the heat is generated in the steam plant, coal and car fuels from petroleum, electricity generated by water power, if traced come from the sun as well, the reason is that our sun play most important role in water cycle, or cycles hidroglogi, and flowing water is one of the stages
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