The Amazing of Earth (Earth's Atmosphere)

EARTH'S ATMOSPHERE

The Earth's atmosphere is actually a thin blanket around the earth. If the earth were an orange, the atmosphere would be as thin as the skin of the orange. 

1. Trophosphere

    The troposphere is where all weather takes place; it is the region of rising and falling packets of air. There is a thin buffer zone between the troposphere and the next layer called the tropopause.

2. The Stratosphere and Ozone layer

    Above the troposphere is the stratosphere, where air flow is mostly horizontal. The thin ozone layer in the upper stratosphere has a high concentration of ozone, a particularly reactive form of oxygen. This layer is primarily responsible for absorbing the ultraviolet radiation from the Sun. The formation of this layer is a delicate matter, since only when oxygen is produced in the atmosphere can an ozone layer form and prevent an intense flux of ultraviolet radiation from reaching the surface, where it is quite hazardous to the evolution of life. There is considerable recent concern that manmade flourocarbon compounds may be depleting the ozone layer, with dire future consequences for life on the Earth.

3. The Mesosphere 

     The mesosphere is the place where meteors burn up and cause shooting stars. 

4. The Ionosphere or Thermosphere

   The ionosphere is very thin, but it is where aurora take place, and is also responsible for absorbing the most energetic photons from the Sun, and for reflecting radio waves, thereby making long-distance radio communication possible. 

5. The Exosphere

    Thin layer before spacecraft reach outer space.