Question

explain how water kept in an earthen pot become cool during summer

Answer 1

Earthen pot have pores in it. So water evaporates and evaporation causes cooling effect therefore water remains cool.

Answer 2

In an earthworm pot, water gets evaporated quickly through the pores .Cooling caused by evaporation.some heat energy utilseductive during the process of evaporation .Since this energy is taken from the water itself , it leads to a lowering of temperature in the remaining amount of water.

hope it helps you...