Question

why perspiration causes cooling?

Answer 1

The sweat (water) evaporates as there is a gradient in concentration of water vapour in the ambient air. ... As the molecules absorb the heat and escape into the atmosphere the bulk water (sweat) gets cooler due to loss in heat. Thus sweating causes cooling it is based in the evaporation principle.

Answer 2

hey dear here is your answer--:
Sweating causes a decrease in core temperature through evaporative cooling at the skin surface. As high energy molecules evaporate from the skin, releasing energy absorbed from the body, the skin and superficial vessels decrease in temperature.

hope my answer helps you.
@adityaprakash0574