atmosphere

Atmosphere is membran which wrapped the earth and make it a hospitable place for life. Atmosphere consist of five parts of layer and its contain will change with altitude.

The first layer is dry air at the earth’s surface called troposphere, it contain of 78,08 % nitrogen; 20,94 % oxygen; 0,93 % argon; 0,03 % carbon dioxide and less than 0,00005 % ozone. Troposphere is extending from the earth’s surface to an altitude of 9 to 16 km and its minimum temperatur is zero. It’s the place for many organism to live and its also place for all weather and mineral cycle was happened.

The second layer called stratosphere, it contain of ozone, that made when the oxigen molecules interacted with thunder and the UV rays. Ozone in this layer was reduces amount of ultraviolet light that reaches the earth surface, makes organism in earth protected from radiation mutation. Stratosphere is extending from the earth’s surface to an altitude of 10 to 45 km and its temperature is from – 45 to – 75 Celcius degree. Its also the place for the commersial plane to fly.

The third layer is called mesosphere, it is extending from the earth’s surface to an altitude of 45 to 80 km, its temperature reach – 138 Celcius degree.

The fourth layer is called thermosphere, it is the outer layer of atmosphere that extending from the earth’s surface to an altitude of 80 to 500 km. This layer is marked by increasing heat with its increase altitude. In thermosphere, there’s many gases which absorb the X rays and UV radiation. UV rays heat the thermosphere made its temperature untill 1000 Celcius degree. This layer is the first earth protector from the things out of the space like meteorite .