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  • Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.

Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.

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Answer:

Yes, sun is the ultimate source of energy as all the producers on earth make their food using sunlight and rest of the organisms consume or feed on producers.

Non-renewable resources like coal, petrol and natural gases are living organisms which got buried in the ground and due to high pressure and temperature in the earth, has turned into fossil fuels. But they got their initial energy form sun only.

Renewable sources are also indirectly dependent on sun.

Wind energy: Harnessing energy from wind is wind energy and wind is possible due to the uneven heating of earth’s surface. For example, land gets heated easily compared to water which in turn produces hot and cold gas which is nothing but high energy and low energy gas respectively.

Bio energy: Harnessing energy from living organisms like wood, cow dung etc. into biogas which are products of life. These are dependent directly on sun or indirectly on sun by feeding on producers.

Wave energy: Harnessing energy from waves which are dependent on the wind speed which is a phenomenon due to uneven heating of earth’s surface.

Solar energy: Harnessing energy form Sun’s radiation is directly dependent on Sun.

So yes, we can conclude that Sun is the source for all the forms of energy on this planet directly or indirectly.

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