STRUCTURE OF THE ATMOSPHERE OF EARTH

CHEMISTRY

 

LAYER HEIGHT (Km) FEATURE

 

Troposphere 0-18 km Containing 75% of the gases in the atmosphere. As height increases temperature decreases (about 6.5 c/km ascent).
Stratosphere 18-50 km This layer contains the Ozone layer. The temperature remains fairly constant. At the upper layer, the temperature is almost 0 Celsius.
Mesosphere 50-80 km This is the coldest region of the atmosphere. The temperature drops to about – 100 degrees Celsius.
Ionosphere 80-600 km Radio waves are bounded off the ions and reflect waves back to the earth. This generally helps radio communication.
Exosphere Above 600 km An upper part of the exosphere is called Magnetosphere. The temperature keeps on rising constantly at a high rate.

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