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प्रश्न
What is Atmospheric pressure?
OR
Is Atmospheric pressure the same on every place on the surface of the Earth?
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उत्तर
Air has weight and, therefore, the atmosphere exerts pressure on the surface of the earth. It has been calculated that at sea level the pressure of air is about 1kg per square centimetre or enough to support a column of mercury 76 cm. in a tube. But with increase of height above sea level the pressure decreases because the overlying column of air goes on getting shorter.
संबंधित प्रश्न
Name the constituent gases of atmosphere which scientists consider responsible for climate change.
Name two chief characteristics of atmosphere.
Explain the following term/process in detail:
CFCs
Describe the structure of the atmosphere.
Define the following
Thermosphere
How does carbon dioxide create green house effect?
How does nature balance our life? What is the result if this balance is disturbed?
Give Reason:
Nitrogen and oxygen are called permanent gases of the atmosphere.
Write about the composition of the Atmosphere.
Which one of the following gases constitutes the major portion of the atmosphere?
