Advertisements
Advertisements
Question
State two experiences that made you think that air exerts pressure.
Advertisements
Solution 1
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.
Solution 2
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.
RELATED QUESTIONS
What is meant by the statement 'the atmospheric pressure at a place is 76 cm of Hg'? State its value in Pa.
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.
The atmospheric pressure at earth's surface is P1 and inside mine is P2. They are related as :
What is the value of atmospheric pressure?
What is meant by atmospheric pressure?
A low-pressure system is also called ______ and ______.
______ is used to show the distribution of air pressure.
Figure shows a child blowing air with a straw near the opening of another straw which has its other end in a soft drink bottle. It was observed that the level of the soft drink in the straw rises up as soon as air is blown over its open end. Which one of the following best explains the reason for rise in level of the drink?
