Why does hot water cool down when you blow on it?

Question

It doesn't have to be water, it could be hot chocolate, soup, tea etc... but why does blowing air or stirring hot substances make it cooler? If you are adding movement to it by blowing on it (i.e. kinetic energy) shouldn't it get hotter because you are "exciting" the electrons? What makes it cool down?

Answer 1

simple are breath is cold and it blows some of the steam off the food or drink thus cooling it down

Answer 2

Like epidavros said, blowing removes the moist air near the water surface. Your moist breath combines with dry air, so the air you blow has lower water vapor pressure. Plus, due to the Bernoulli principle, air in motion has a lower pressure than still air, so the water vapor pressure is further reduced.  

Answer 3

Blowing increases the rate of evaporation from the surface. It does this because it removes the layer of gas with high water vapour pressure and replaces it with fresh air with lower water vapour pressure.

Evaporation takes a lot of energy, so this cools the liquid.

Answer 4

It cools down due to convection. The air constantly circulates and takes the heat out of the substance.