Question

After a hot sunny day when we sprinkle water on roof we feel cool.Explain the reason for it

Answer 1

When people sprinkle water on hot and dry roof on a sunny day, that water evaporates by taking energy from the ground, roof and surroundings .The evaporation of water causes a cooling effect because the large latent heat of vaporization of water helps to cool the hot surface.

Answer 2

This is due to evaporation.

When we sprinkle water on any hot object the water molecules absorb that enery which them to evaporate and the remaining molecules are having low energy due to which temperature decreases.

This you study in class11

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