Question

how evaporation causes cooling​

Answer 1

When evaporation occurs then than the liquid (mostly water) absorbs all the heat from the surroundings and take it with it and we feel cool. evaporation causes cooling effect because the heat energy is abosorbed by surrounding particles.

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Answer 2

evaporation causes cooling effect because during the process of evaporation, the particles of water (liquid) lose all their energy so the particles of water again absorb energy (heat) from surroundings lost during evaporation. because of the lose of heat in the surroundings, it makes it cool.

some examples are as follows :-

⏺we sprinkle water on an open ground or on any surface during summer because it makes the surrounding cool. as I said before the evaporation causes cooling effect and also how.. that's why people sprinkle water in a hot sunny day.

⏺we feel cool when we put some acetone on our palm. it's because of cooling effect of evaporation. the particles of acetone gain energy from surroundings and palm and then when it evaporates, it leave our palm cold.

⏺tea poured in a saucer cools faster as compared in the cup. as we know evaporation is a surface phenomenon. and when exposed to larger area, rate of evaporation increases and hence tea in the saucer cools faster.

⏺we feel cold when we sweat during summer. because the particles gain energy from our body and evaporates. as a result, we feel our body cold.