Answer :
Water remains cool in an earthen pot in summer due to the phenomenon of evaporative cooling. When water is stored in an earthen pot, the porous nature of the clay allows water to seep through the walls.
1. As the temperature rises during summer, some of the water seeps through the pores and evaporates on the outer surface of the pot.
2. The process of evaporation requires energy, which it takes from the surrounding water in the pot, thus causing the water inside the pot to lose heat.
3. This loss of heat leads to a cooling effect on the water inside the pot, keeping it cooler than the external environment.
In summary, the evaporation of water from the outer surface of the earthen pot absorbs heat from the water inside, leading to a cooling effect and helping to maintain a lower temperature of the water in the pot compared to the surrounding environment.
