Question

on a hot sunny day why do people Sprinkle water on the roof or open ground​

Answer 1

on a hot sunny day people sprinkle water on the roof or open ground because when water is sprinkle on hot surface than on heating water gets evaporated and surface get cooling effect

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Answer 2

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.