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प्रश्न
What is Atmospheric pressure?
OR
Is Atmospheric pressure the same on every place on the surface of the Earth?
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.
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संबंधित प्रश्न
Mention any three functions of the atmosphere.
Name two chief characteristics of atmosphere.
What keeps the atmosphere in a dynamic state?
Give reasons for the following :
The exosphere allows the gas molecules to easily escape into space.
‘The atmosphere acts as a blanket or a glasshouse’. Discuss.
Give an account of the composition of the atmosphere.
_______ is the most important gas for the survival of living organisms.
What are the processes responsible for heating the atmosphere?
Write about the composition of the Atmosphere.
This ______ gas helps in protecting the earth from radiation.
