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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.
We do not feel uneasy even under enormous pressure of the atmosphere above as well as around us. Give a reason.
Explain the following :
A balloon collapses when air is removed from it.
What is meant by the statement 'the atmospheric pressure at a place is 76 cm of Hg'? State its value in Pa.
Give two reasons why water is not a suitable barometric liquid.
Name the instrument used to measure atmospheric pressure.
What effect does temperature have on air pressure?
The highest air pressure at sea level was recorded at ______ Russia.
