why does perspiration cool you on a warm dry day?

Answer 1

It is based on the fact that evaporation causes cooling.This is similar to the cooling of water kept in a mud pot in summer.The mud pot contains very tiny holes through which the water seeps outside.It gets evaporated by the warm air outside.To get evaporated it requires some energy and this energy is the heat energy which is taken from the water itself.So wate is getting cooled.This is what happens in our body when the perspiration comes out through the skin holes.
A wet bulb thermometer also works on the principle that evaporation causes cooling.

Answer 2

When you sweat,
and a breeze comes by it cools you down.
And when your going in a car,
and the wind is hitting you,
it makes you feel a lot better.
Thats one main part of human perspiration,
is to manage body temprature in hot climate.

Answer 3

You lose water onto your skin via your sweat glands. The water evaporates into the air - but to do this it needs energy. The energy that it uses to do this is the heat from your skin.

So, on a hot day, your blood vessels near the surface of your skin widen, allowing your body temperature blood to circulate near the skin and for it to be cooled by water evaporating. The cooler blood then circulates around your body, keeping your core temperature stable.

Answer 4

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Answer 5

Perspiration releases hot sweat from your body. When the sweat evaporates, the heat goes with it, leaving your body cool.

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Answer 6

This is the same technique I have taught over 138,000 men and women in 157 countries to successfully treat their excessive sweating condition over the past 7 years!

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Answer 7

evaporation were you asleep in science when they told you that i wasn't always wanted to learn about science, water evaporates and as it leaves the body air flows in and movement of air accross the body surface gives a cooling sensation

Answer 8

When air touches you and your wet, your body cools down.