Class 10 Science and Experiment Exercise 5.1 Solutions | English Curriculum Development Centre

The speed of the water particles is compared with the height of a group of adult humans where there is an average height but everyone is not the same.

Bubbles are formed in the boiling water when water molecules have enough energy to push back other water molecules in the liquid phase at some point when the temperature of the water is increasing.

The two things on which external pressure depends are as follows:
i.) Depth and density of the water
ii.) The gravitational field.

The atmosphere is related to the pressure of water as it pushes down on the surface of the liquid to increase the pressure in the liquid.

If the atmospheric pressure on the liquid water was decreased, it would also reduce the pressure in the liquid, and the water particles would have enough energy to form their tiny little boiling bubbles without the need to increase the temperature.

The experimenter would gain boiling as the pressure in the liquid would be decreased if s/he pulled the plunger out.