Question

Why is sun the main source of energy. Give two reasons

Answer 1

Answer:

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The sun is called the ultimate source of energy because it is the source of almost all energise of the earth. -» Plants make food using sunlight, the food that we get from plants and animals also has its prime source as sunlight.

On Earth, the main source of natural light is the Sun. The Sun makes its light when atoms smash together inside it, releasing huge amounts of energy. It fires off the energy into space in all directions. Some of the radiation travels to Earth as the light and heat we know as sunlight.

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Answer 2

Answer and Explanation:

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.

We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells.

The sun heats the earth's surface and the Earth heats the air above it, causing wind.

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.

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".