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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
State the gaseous composition of the atmosphere.
Mention any two functions of the atmosphere.
Name two chief characteristics of atmosphere.
What keeps the atmosphere in a dynamic state?
What is ‘Atmosphere’?
Why does the atmosphere thin out at higher levels?
What are the properties of Troposphere?
Give reasons for the following :
The ionosphere (thermosphere) is suited to long distance communication.
‘The atmosphere acts as a blanket or a glasshouse’. Discuss.
Write about the composition of the Atmosphere.
