Activity: To show that pressure in a liquid increases with depth

Theory: Pressure is force per unit area.

P = gh, where

Ø P is the water pressure at a particular depth

Ø g is the acceleration due to gravity

Ø h is the depth of the water at that point

Materials Required: A plastic bottle, hammer, and nail, ruler

Experiment:

Ø Make holes of the same size on the bottle with the help of hammer and nail.

Ø Measure the distance of holes from the bottom with the help of a ruler.

Ø Now fill the bottle with water.

Ø Measure the distance from the bottle to the distance up to which the water comes out.

Conclusion: We will notice that greater the depth, greater is the force with which water comes out of the bottle that is the water coming out will travel more distance if the depth is increased.