Question

how does the water kept in an earthern pot become cool during summer?

Answer 1

An earthern pot has small pores in its wall.when water is pored into it some of it seeps through these pores onto its surface .on reaching there it evaporates .the heat requried for evaporation is taken from the water in it .as a result the water in the earthern pot gets cooled down.

Answer 2

Answer -

Earthen pots contain tiny pores. During summer, when water poured into an earthen pot, some of the water seeps through pores to the outer surface.

the water molecules on evaporation escape from the tiny pores of the earthen pot. The heat required for evaporation is taken from the earthen pot and the water in it. This results in lowering of the heat content of remaining water and the water become cool.

Meanings -

evaporation : The process of conversion of liquid into its vapour state at any temperature below its boiling point is called evaporation.

boiling point : The temperature at which liquid starts boiling at the atmospheric pressure is known as its boiling point.

Molecules : It is atom or groups of bounded atoms that exist independently.