EMMANUEL

COLLEGE OF B.Ed. TRAINING VAZH ICH AL,K UDAPPANAM O O DU P.O . ,

TH I RUVANTH APURAM .

Fas l u l I l ah i

G EO G RAPH Y

Rol l . No: 62

LAYERS OF THE ATMOSPHERE

THERE ARE 4 LAYERS OF THE ATMOSPHERE

•Troposphere•Stratosphere•Mesosphere•Thermosphere

THERE ARE 3 BOUNDARIES BETWEEN

THE LAYERS

•Tropopause•Stratopause•Mesopause

TROPOSPHERE

• The word ‘troposphere’ is derived from the Greak word ‘tropos’• From the surface of the earth to about 10 km above the earth surface.• Temperature gets cooler at a constant rate as attitude increase.

TROPOPAUSE

• The boundary all the top of the troposphere• The low temperature (-55c) keeps the water vapour and clouds in the troposphere

STRATOSPHERE

•10km to about 50km above the earth surface•Temperature cots warmer with increasing attitude•No water vapour in the stratosphere result in few clouds and no storms

OZONE LAYER

In the upper part stratosphere and absorbs the sun’s

ultra violet radiation.

STRATOPAUSE

The boundary between the top of the stratosphere and the bottom of the mesosphere.

MESOSPHERE

•Extend from 50km to 80km above the earth’s surface•Temperature decrease with increasing attitude•As the top of the mesosphere is the coldest part of the earth’s atmosphere where temperature drop below 80 degree c

MESOPAUSE

•The boundary between the top of the mesosphere and the bottom of the thermosphere

THERMOSPHERE

• Extend from 80km to 480km above the earth surface.• Temperatures increase with an increase in attitude and become very hot.•Average temperature is 980 degree c.

IONOSPHERE

•Lower portion of the thermosphere where auroras occur

CONCLUSION

Mainly there are 4 layers in the atmosphere. Troposphere, Stratosphere, Mesosphere, Thermosphere.

ReviewOWhich is the lower most layer of Atmosphere?

OThe word troposphere derived from which language?

OWhat is the extension of thermosphere?

Black board summary

Soc ia l sc ience

Layers of the atmosphere

Std: IXDiv:

• Troposphere• Stratosphere• Mesosphere• Thermosphere

THANK YOU