Troposphere:
- Lowest layer 6 to 20 km.
- weather occurs.
- Temp. 17°C to -51°C.
- Majority mass (70-80%) in this layer.
- Gas, water vapor, and dust live here.
- Tropopause means the meeting point of the troposphere and stratosphere or the uppermost part of the troposphere and the lower part of the stratosphere.
Stratosphere:
- Above the troposphere to 50 km.
- Temp. -60°C to -15°C.
- Ozone layer. Absorbs harmful ultraviolet (UV).
- Stratopause is a similar thing—the uppermost part of the stratosphere and the lower part of the mesosphere.
Mesosphere:
- 85 kilometers above Earth’s surface (30km to 85km).
- -15°C to -120°C.
- thin air and can't breathe.
- The meteoroid burned here because it has thin air, so due to friction meteoroid burned.
- Mesopause, i.e., uppermost part of mesosphere and lower part of thermosphere.
Thermosphere:
- 85km to 600 km.
- Solar radiation makes the upper regions of the thermosphere very hot i.e., 2,000°C.
Exosphere:
- outermost layer.
- Above 600km.
- The pull of Earth’s gravity is so small here that molecules of gas escape into outer space.
Ionosphere:
- 70km to 1000km.
- Mostly ions and electrons.
- Glowing atmosphere.
- Because of this, Arora appears.
- It divided into D, E, and F region.
Magnetosphere:
- Extended 6 to 10 times of earth's radius (it can change due to solar activities.)
- Earth's internal magnetic region.
- To protect from harmful radiation that comes from the sun.
- Magnetopause means the outer boundary of Earth's magnetic field.
- It has no uniform shape. In the Indian frame, at night they are extended, and in the daytime they are shorter.