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We use evaporation in many different ways. Talk about how evaporation happens in each of the pictures and how it is useful.
drying your hair
using a tumble dryer
grapes drying on a rack in the sun
Liquids evaporate faster when the air is moving.
When we are hot, we sweat. As the fastest, hottest water particles in the sweat escape by evaporation, they take heat energy from our skin.
When we sweat, our skin cools down.
Water needs energy to evaporate and change from a liquid to a gas. If this energy comes from the surface of your skin, your skin gets cooled.
Have ever used hand sanitiser? The sanitiser evaporates off your hands making them feel cool.
Sweating makes us cool.
your observation.
Extra point!
Why is it better to stay fully clothed in a hot desert, even if you feel very hot?