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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.
What keeps the atmosphere in a dynamic state?
What is called weather?
Give reasons for the following :
Solid particles play an important role in the atmosphere.
‘The atmosphere acts as a blanket or a glasshouse’. Discuss.
State two advantages of convectional heating of the atmosphere.
This ______ gas is chemically inactive in atmosphere.
Daniel Rutherford discovered ______ in atmosphere.
Give Reason:
Nitrogen and oxygen are called permanent gases of the atmosphere.
Describe the composition of the atmosphere.
