Question

Write some daily life situations in which evaporation is useful to us?

Answer 1

Some real life examples of evaporation are as follows :-

◆ During summer, or on a hot sunny day, poor people generally sprinkle water on the roof or on the ground. As water evaporates , it takes up heat from the surface. As a result , cooling is caused. They sleep comfortably during the night.

◆ We normally prefer cotton clothes in summer. Actually, we prespire a lot in the hot and humid weather. Since, cooling is caused during evaporation, the body temperature gets lowers .We feel comfortable. Now, cotton is of porous nature and is good absorber of water coming out of the pores aa sweat. The synthetic clothes are less porous and do not absorb sweat so quickly.

◆ In summer, we get relief under a fan. Actually, the air from the fan causes quick evaporation of sweat from our body. This needs energy which is taken from our body . The body temperature gets lowered and we get relief.

◆ A desert cooler is quite effective in summer. In fact, hot and dry air passes through the wet pads of wood-shavings . Water present evaporates and in the process, the temperature inside the cooler gets lowered . That's is why , the air from it is very cool.

◆ In summers, generally we keep drinking water either in earthen pots or in earthen pitchers . It becomes sufficiently cold within a few hours. Actually, there are fine holes in the earthen walls. Water escapes from these holes as vapours, it is supplied by water present in the pot or pitcher. It's temperature slowly gets lowered and it becomes cold.