Describe 'Green House' Effect.

Explanation

The term Green House effect. has been derived from a phenomenon that occurs in a green house.. Green house is a small glass house and is used for growing plants especially during winter. In a green house the glass panel allows the passage of light into it, but does not allow heat to escape (as it is reflected back). Therefore, the greenhouse warms up, very much like inside a car that has been parked in the sun for a few hours.
The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of the Earth.s surface and atmosphere. It would be surprising to know that without green house effect the average temperature of the Earth.s surface would have been a chilly - `18^(@)C` rather than the present average of `15^(@)C.`
When sunlight reaches the outer most layer of the atmosphere, clouds and gases reflect about one-fourth of the incoming solar radiation and absorb some of it. Almost half of the incoming solar radiation falls on the Earth.s surface and heats it up. While a small proportion is reflected back.