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प्रश्न
State two experiences that made you think that air exerts pressure.
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उत्तर १
We have experienced that when we blow a balloon, the balloon becomes tight. If we try to fill more air, then the balloon will burst after an extent. This happens because air exerts pressure.
We have also experienced the movement of fringes of windows and doors of our houses when wind blows in a high speed. This also happens because air exerts pressure.
उत्तर २
1) Balloons and balls can be used only when they are inflated with air. When balloon is overfilled with air it bursts due to excessive air pressure.
2) Compressed air is used in the brake system for stopping trains.
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संबंधित प्रश्न
Describe a simple experiment to illustrate that air exerts pressure.
What is the purpose of a barometer?
Explain how is the height of mercury column in tube of a simple barometer, a measure of the atmospheric pressure.
What is the purpose of a barometer? State two major defects of a simple barometer.
What will be the effect on air pressure if the temperature drops? Why?
What effect does temperature have on air pressure?
What is meant by atmospheric pressure?
The standard air pressure at sea level is ______.
The small variations in pressure that exist largely determine the ______ and ______ patterns of the earth.
