Question

sunlight is the ultimate source of energy . Explain ?

Answer 1

yea , sunlight is the main source of energy because by sunlight we can produce electricity .By sunlight plant prepare there food.
sunlight is also called as energy resource....

Answer 2

The sun is the ultimate source of almost all kinds of energy on earth, either directly or indirectly. Fossil fuels (coal, oil and gas) are the transformed forms of plants (and animals) which once lived on the earth and grew capturing the energy of the sun. Biomass is a product of photosynthesis where the sun has the major role.

Solar energy is increasing becoming an important source of renewable energy. Hydro-electricity depends upon the water cycle which again is dependent on solar radiation. Similarly, wind energy, tidal power, wave power all, in some way or other, and depend on the sun.

The sun is an extremely hot mass of gas, where continuous thermo-nuclear reaction is taking place producing enormous quantities of heat and light. The sun radiates energy in the form of heat and light in all directions. Only a very small part of this energy is intercepted by our planet earth.
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The radiations that reach the earth’s upper atmosphere are:

Ultraviolet radiation,

Visible radiation, and

Infra-red radiation.

Ultraviolet radiation is harmful to the flora and fauna. But fortunately ozone layer on the top of our atmosphere (stratosphere) absorbs the major portion of ultraviolet radiation and a very small part of this radiation reaches the earth’s surface.

The major part of the solar radiation is occupied by visible light and heat wave, both of which contribute to our energy system.