Question

what are greenhouse effect ​

Answer 1

Answer:

The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere. Radiatively active gases in a planet's atmosphere radiate energy in all directions.

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Answer 2

Answer:

A greenhouse gas is a gas that absorbs and emits infrared radiation. They absorb infrared energy (heat energy) emitted from the earth’s surface and reradiates it back to the earth’s surface.

Explanation:

Greenhouse Effect Explanation

A greenhouse or a glasshouse is a closed glass structure in which plants are grown in regulated climatic conditions.

In such a structure, the solar radiation passes through the glass and is absorbed by the floor, earth, and other contents inside.

They in turn, become warmer, and reradiates the energy as infrared (heat) radiation which are of longer wavelength.

This radiation cannot escape from the glass since glass cannot transmit infrared radiation. Thus, the temperature inside the greenhouse increases.

This is the Greenhouse Effect.

Natural Greenhouse Effect

Greenhouse Effect is a natural phenomenon.

It has been happening on earth for millions of years.

Natural greenhouse effect happens due to water vapour and particles of water present in the atmosphere.

This phenomenon has enabled life to emerge on land from the oceans.

This is also the reason the earth has sustained life as it maintains an average temperature of 15oC on earth.

But for this effect, the average temperature would have been around -17oC and life would not have existed.