Composition Gases Prssent Factors Affecting Temperature Description of Lovers Bo

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Composition Gases Prssent Factors Affecting Temperature Description of Lovers Botten of the page resents the bettorm of Carth Thermosphere bettorn of E arth Ionosphere Temperature Trends: Desaribe Mesosphere Main Points Temp erature Meteors Composition: Stratosphere Ozone Layer Function Man Points Composition Troposphere Composition: Weather: Describe Greenhouse Effect: Location Man Points: Temperature Trends Main Idea #2: Through the study of rocks, scientists can predict how Earth' s early atmosphere change 4Lesson

Explanation / Answer

Composition of the atmosphere:

Atmosphere contains 78% nitrogen, 20.9 % oxygen, 0.90%argon gases, 0.17% other gases and 0.03 % carbon die oxide. Water vapours 0.25% of atmosphere by mass

Layers

1. Thermosphere: second highest layer of earth atmosphere

The layer goes with gradual increase in temperature with height because of low density of molecules. The layer is cloudless and free of water vapour but phenomenon like aurora borealis and aurora australis are ocassionally seen in thermosphere.

Mesosphere : it is the third highest layer . Temperature drops with increasing altitude to the mesopause . It is the coldest place of earth atmosphere

The air is so cold that even scarce water vapor can be sublimated into polar mesospheric noctilucent cloud

Mesosphere is also the layer where most of the meteors burns .

Stratosphere is the second lowest layer . The pressure at the top of stratosphere is 1/1000 of sea level. Temperature rises with increasing altitude. It is caused by absorption of UV rays.

Ozone layer is present in this layer. This layer lacks th weather producing turbulence. It is free of water vapour and clouds

Troposphere is the layer in which we live.everyphenomenon of clouds, rain occurs here. Temperature decreases with increase height.

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