Question

How does evaporation cause cooling?

Answer 1

Hint: Evaporation is a form of vaporisation that occurs on a liquid's surface as it transitions from a liquid to a gas. The evaporating liquid must not be saturated in the surrounding gas.

Complete answer:
Evaporation is described as the method of converting a liquid state to a gas. This procedure requires the use of heat energy. Evaporation is a common mechanism that causes cooling. The principle involved here is that in order to change its state, matter must either gain or lose energy.
Molecules must shift from a liquid to a gaseous state, which requires the use of potential and kinetic energy. Energy is transmitted from the material to the surroundings or vice versa as a result of evaporation. Cooling can result from the temperature rise before the evaporation process is completed. As a result, evaporation causes a cooling effect.
Consider the following example. Water in earthen pots can be cooled to below room temperature. The earthen pots have minute pores from which water seeps out, which is why they have such a cooling effect. The heat from the water inside the pot is absorbed by the seeping water, which evaporates. Therefore, the temperature of the water inside the pot is decreased, making it colder and more pleasant to drink during the summer months.

Note:
We can also note that the rate of cooling decreases during the rainy season and increases during the summer. The measure of evaporation is determined by temperature as well as the relative humidity of the atmosphere. The higher the amount of evaporation, the colder the water within the earthen pot gets as the humidity drops.