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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.
संबंधित प्रश्न
Fill the missing word in the blank spaces in the following statements:
Air moves from a region of __________ pressure to a region of ________ pressure.
Give reason for the following:
Water does not run out of a dropper unless its rubber bulb is pressed.
Describe an experiment to demonstrate that air exerts pressure.
Why does the liquid rise in a syringe when its piston is pulled up?
How does the atmospheric pressure change with altitude? Draw an approximate graph to show this variation.
The atmospheric pressure at earth's surface is P1 and inside mine is P2. They are related as :
A solid weighs 2.10 N in air. It has a relative density of 8.4. How much will the body weigh if placed: In water
On the earth, air pressure is ______
What is meant by atmospheric pressure?
Give reasons:
Why artificial pressure creates in Aircraft?
