LAYERS OF ATMOSPHERE

 What is the atmosphere?

The atmosphere is called the wide repository of air around the earth. It allows short waves of solar radiation to reach the surface of the Earth, but becomes a barrier to long waves of earthly radiation! In this way it acts like a giant "glass house" by stopping the heat, thereby maintaining an average temperature of 15 degrees centigrade on Earth! This temperature is the basis of the development of the biosphere on Earth. 

Although the expansion of the atmosphere reaches about 29000 km altitude! But 99% weight of the air system is limited to only 32 kilometers. 

Atmosphere Composition

There is a mixture of many gases in the atmosphere! The highest amount of nitrogen followed by oxygen, argon and carbon dioxide comes in place. Apart from this, water vapor, dust mites and other impurities are also present in the atmosphere in uneven amounts! 99% of the various gases are confined to a height of only 32 kilometers, while 90% of the dust particles and water vapor reaches a maximum of 10 kilometers. 

Nitrogen (N2) - 78%

Oxygen (O2) - 21%

Argon (Ar) - 0.93%

Carbon Dioxide - 0.03%

Layer of Atmosphere

                    The layers of the atmosphere are mainly divided into five parts : 

  

1-Troposphere (0 to 8/18 km)

This region is of paramount importance to the biosphere ecosystem as all weather related events occur in it.

Due to all the changes in the weather, this is also called the change board!

The air temperature decreases at an average rate of 1 ° C per 165 m elevation. This is called the normal heat collapse rate.

The range of this circle is up to a height of 18 km above the equator and about 8 km above the poles.

Jet airflows in the upper troposphere!

Water vapor, most of the dust is found in this!

2-Stratosphere

                     It extends from 8 or 18 km to 50 km!

It is also known as Ozone Division due to the fact that it has got ozone layer (15 to 35 km).

Ozone gas absorbs the harmful ultraviolet rays of solar radiation and does not allow them to reach the surface and protect the Earth from overheating.

Initially the temperature in this circle is constant and starts to increase after 20 km. This is due to the presence of ozone gases, which raise the temperature by absorbing ultraviolet rays!

The stratosphere remains free from clouds and weather related events.

At the bottom of this circle are ideal conditions for jet aircraft to fly.

3-Mesosphere (50 to 80 km)

                 It extends from 50–55 km to 80 km.

The temperature in this circle decreases with altitude and reaches about -100 degree centigrade, which is the lowest temperature in the atmosphere! And after its upper limit, again the temperature starts increasing.

4-Ionosphere (80 to 640 km)

In this circle, heat increases rapidly with height.

It contains excess of electrically charged particles, which are called ions! Due to the abundance of these, the name of this mandal is Ayaan Mandal! These particles reflect radio waves onto the earth and make wireless communication possible.

5-Exosphere (above 640 km)

This is called the frontier area of ​​the atmosphere. The air of this circle is extremely sparse.

The density of gases is very low here, here the predominance of hydrogen and helium gases!

So friends, hope you have got complete atmosphere information! The main problem comes in sorting all the layers from bottom to top to remember which layer is first and which is later! So friends, for this solution we are telling you a trick below so that you will be able to memorize all the layers from bottom to top sequentially!