Applications of pressure are given below.
When air is sucked out of a drinking straw, the air pressure inside it decreases, and the atmospheric pressure outside forces the liquid to go inside the straw.
The area of the edge of a knife’s blade is extremely small. This creates pressure high enough for the blade to cut through a material.
Syringes are used to take blood for blood tests. The pressure of the liquid forces the liquid to move into the syringe when its plunger is withdrawn.