Tips and Tricks on Air


 


1
Atmosphere: The outer cover of air around the earth surface is called atmosphere. Organisms can exist upto 7 to 8 km above the sea level in air.



2
Wind: Air in motion is called wind. Speed of movement of air is determined by:
(i) Heating of air
(ii) Formation of water vapours
Wind occurs because of horizontal and vertical differences in atmospheric pressure.



   3


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