Question

What is evaporation? how does evaporation cause cooling?

Answer 1

The process of changing liquid into gas by heating is called evaporation. It causes cooling. for eg boiling water evaporates and goes up in the sky and cools and falls from sky in the form of rain

Answer 2

the process of escaping of water malecules from the surface is called evaporation . example .1.dogs pant during hot summer days and get their body cooled this cooling effect is due to evaporation.2.the system of evaporation falls during summer the temperature in the human body increases the temperature of skin becomes higher  and water in the sweat glands starts evaporation since evaporation is a cooling process human body to cool.3.dogs do not have sweat glands because their body is covered with hair they have sweat glands in their only in their feet.4.so by panting the water on the tongue starts evaporating resulting the cooling of the dog's body