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Q.

Why Atmosphere gets cooler as you go up from the surface of the earth?

Tags: science, entertainment, environment
Asked by narendra sharma, 23 Nov '12 03:23 pm
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Answers (4)

 
1.

At 80 km the air starts warming again. The ultraviolet radiation from the sun is absorbed by the oxygen molecules, 02 , breaking them apart into two atoms. These atoms combine with other oxygen molecules to form 03 which is ozone. Ozone is heavier than oxygen and it sinks. The ultraviolet radiation that is absorbed warms the atmosphere as you get lower. This layer is called the mesosphere. The boundary between the mesosphere and the thermosphere at 80km is called the mesopause.

The newly created ozone also absorbs ultraviolet radiation and it breaks up into O2 and O. The oxygen atoms rise to create more ozone. The peak of all this absorption is about 50km up. Below that the temperature starts falling again. The layer where the temperature falls is called the stratosphere and the boundary between the stratosphere and the mesosphere is called the stratopause. Temperatures at the stratopause can be as high as 20C. Temperatures fall or remain the same through the stratosphere.

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Source: Jameel Bhai
Answered by Ataur Rahman, 23 Nov '12 03:25 pm

 
  
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2.

Earth is hot, and the atmosphere is cool
Answered by Surender Rao, 24 Nov '12 06:54 pm

 
  
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3.

To understand why air cools as you go up in elevation, you have to know a few things about "atmospheric science," the study of the blanket of air covering the Earth. The first thing you need to know is that the air in Earth's atmosphere is made up of transparent, compressible gases. While you may not be able to see them, they still have mass. They're made up of tiny units called molecules. Gas molecules are spaced pretty far apart, making gases much less dense than liquids or solids. Since gas molecules have a lot of space in which to move around freely, they do just that. This space between molecules explains why air is able to expand and contract dramatically.
Answered by iqbal seth, 24 Nov '12 08:23 am

 
  
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4.

At 80 km the air starts warming again. The ultraviolet radiation from the sun is absorbed by the oxygen molecules, 02 , breaking them apart into two atoms. These atoms combine with other oxygen molecules to form 03 which is ozone. Ozone is heavier than oxygen and it sinks. The ultraviolet radiation that is absorbed warms the atmosphere as you get lower. This layer is called the mesosphere. The boundary between the mesosphere and the thermosphere at 80km is called the mesopause.
Answered by Quest, 23 Nov '12 04:03 pm

 
  
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