State two experiences that made you think that air exerts pressure.
We can experience air pressure in our daily activities such as:
- Tree leaves and branches flutter due to pressure exerted by air in the form of wind.
- It is difficult to ride a bicycle against the wind but it is much easier in the direction of wind.
(i) 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.
(ii) Compressed air is used in the brake system or stopping trains.