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Matter in Our Surroundings — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings1 Mark
Question
Why does perspiration leave a cooling effect on our body:
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Answer

  1. The sweat particles absorb heat from the body and get converted into vapour, thereby reducing its temperature
Explanation:
It happens due to evaporative cooling.
The sweat gets vaporized from the skin into the atmosphere, by absorbing heat from the body.
Thus the body cools down as it loses heat.

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