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प्रश्न
What do you understand by atmospheric pressure?
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उत्तर
The thrust exerted per unit area of the earth surface due to column of air, is called the atmospheric pressure on the earth surface.
संबंधित प्रश्न
How does the pressure at a certain depth in sea water differ from that at the same depth in river water? Explain your answer.
We do not feel uneasy even under enormous pressure of the atmosphere above as well as around us. Give a reason.
How is the barometric height of a simple barometer affected if Its tube is pushed down into the trough of mercury?
State two advantages of an aneroid barometer over a simple barometer.
Why are the months of January and July used to describe the world distribution of pressure?
Atmospheric pressure at sea level is 76 cm of mercury. Calculate the vertical height of the air column exerting the above pressure. Assume the density of air 1.29 kgm−3 and that of mercury is 13600 kgm−3. Why the height calculated by you is far less than the actual height of the atmosphere?
What does a falling barometer indicate?
Clouds float in atmosphere because of their low ______.
As we go from the equator of the earth to pole of the earth, the value of acceleration due to gravity ______.
The small variations in pressure that exist largely determine the ______ and ______ patterns of the earth.
