Question

State the effect of green house gases on the temperature of earth's atmosphere.

ICSE Class 9 Physics Chapter Heat and Energy

Answer 1

The green house gases trap the heat radiated by the sun and make the global temperature to rise

Answer 2

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Greenhouse Effect➫ The warming effect of the sun on greenhouse gases like Carbon dioxide that act to trap this heat in our atmosphere.

Ex:- Global Warming

♦ It is one of the main factors determining the temperature of a planet.

♦ It act like a blanket by absorbing IR radiation & preventing it from escaping into outer space.

➧ Types 0f Greenhouse Gases are:-
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❱ 0zone
❱ Methane
❱ Nitrous oxide
❱ Carbon dioxide
❱ Chlorofluorocarbons
❱ Hydrofluorocarbons

➧ Causes 0f Greenhouse Effect are:-
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❱ Burning of Fossils Fuel like - Coal.

❱ Trapping of energy in the lower atmosphere.

❱ The chemical composition of the atmosphere.

❱ The total energy influx from the sun which depends on the earth's distance from the sun & on solar activity.


➧ Importance 0f Greenhouse Effect are:-
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❱ It maintain the water level of the earth's surface.

It keeps the Earth warm enough to sustain life.

❱ It prevents the melting of ice & restricts the polar caps to the polar regions only.


➧ Effects 0f Greenhouse Effect are:-
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❱ Skin disease.
❱ Rise in sea level.
❱ Climate Change.
❱ Increase in earth's temperature.


➧ The ways to reduce Greenhouse Effect are:-
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❱ Reduce, Reuse & Recycle.

❱ Use Less Heat & Air Conditioning.

❱ Replace Your Light Bulbs.

❱ Drive Less & Drive Smart.

❱ Buy Energy-Efficient Products.

❱ Use Less Hot Water.

❱ Use the "Off" Switch.

❱ Plant a Tree.

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