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atmosphere means those all is in sky
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The atmosphere is divided into five layers beginning from the surface of the Earth. These are:
Troposphere
It is the most important layer of the atmosphere and it extends up to 13km from the surface of the Earth.
Oxygen, that we breathe exists in this layer of the Earth.
The temperature decreases in this layer with the increase in height.
All weather phenomena like rainfall, hail and fog occur in this layer as the clouds are formed in this layer.
The upper limit of the troposphere is known as the tropopause. Temperature may be as low as -580C
at this level.
Stratosphere
This layer of atmosphere lies above the troposphere and it extends up to a height of 50km.
Airplanes fly in this layer, as this layer is free from clouds and other weather phenomena. This layer is also free from water vapour and dust particles.
Stratosphere contains a layer of ozone gas which protects us from the harmful ultra violet rays of the Sun.
In the higher levels of the stratosphere, the temperature increases with height due to the absorption of UV rays by the ozone in the layer.
The upper part of the stratosphere is known as stratopause.
Mesosphere
This is the third layer of the atmosphere and it lies above the stratosphere up to a height of 80kms.
It is in this layer that meteorites burn when they enter into the atmosphere from space.
The upper layer of the mesosphere is known as the mesopause.
Thermosphere or Ionosphere
This layer extends from 80-400km.
Temperature increases drastically in this layer and can go up to 1,4800C.This is because the molecules in this layer absorb the Sun’s UV rays.
Thermosphere helps in the transmission of radio waves as the latter is reflected back to the Earth by this layer.
Exosphere
It is the uppermost layer of the Earth.
It has very thin layer of air.
Light gases like helium and hydrogen float into space from this layer due to the lack of gravity.
This layer extends from 480 km to 960 km above the Earth.
Temperature increases with height in this layer. The temperature may well go beyond 55000C....
Troposphere
It is the most important layer of the atmosphere and it extends up to 13km from the surface of the Earth.
Oxygen, that we breathe exists in this layer of the Earth.
The temperature decreases in this layer with the increase in height.
All weather phenomena like rainfall, hail and fog occur in this layer as the clouds are formed in this layer.
The upper limit of the troposphere is known as the tropopause. Temperature may be as low as -580C
at this level.
Stratosphere
This layer of atmosphere lies above the troposphere and it extends up to a height of 50km.
Airplanes fly in this layer, as this layer is free from clouds and other weather phenomena. This layer is also free from water vapour and dust particles.
Stratosphere contains a layer of ozone gas which protects us from the harmful ultra violet rays of the Sun.
In the higher levels of the stratosphere, the temperature increases with height due to the absorption of UV rays by the ozone in the layer.
The upper part of the stratosphere is known as stratopause.
Mesosphere
This is the third layer of the atmosphere and it lies above the stratosphere up to a height of 80kms.
It is in this layer that meteorites burn when they enter into the atmosphere from space.
The upper layer of the mesosphere is known as the mesopause.
Thermosphere or Ionosphere
This layer extends from 80-400km.
Temperature increases drastically in this layer and can go up to 1,4800C.This is because the molecules in this layer absorb the Sun’s UV rays.
Thermosphere helps in the transmission of radio waves as the latter is reflected back to the Earth by this layer.
Exosphere
It is the uppermost layer of the Earth.
It has very thin layer of air.
Light gases like helium and hydrogen float into space from this layer due to the lack of gravity.
This layer extends from 480 km to 960 km above the Earth.
Temperature increases with height in this layer. The temperature may well go beyond 55000C....
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