Heat Transfer:

What happens to air when it is heated or cooled by the surface below it? Air above a hot surface will be heated and turn hot. Air above a cold surface will become cold. How does this happen? Heat Transfer. Heat transfer is the movement of air from an area of higher temperature, to an area of lower temperature. A hot surface will give heat to the cooler air above it, making the air above it hot. Warm air will transfer its heat to a colder surface, losing its heat and become colder. There are three types of heat transfer; 1) Radiation 2) Convection and 3) Conduction.