Heat transfer

Means that warm air/water rises and colder air/water falls.

Warm air/water moves toward cooler air/water.

Steam is an example of convection.

Heat is transferred with two objects touch.

Heat is transferred from the warmer object to the cooler object.

Touching a hot surface is an example of conduction.

Heat is transferred through invisible waves that move away from the source toward cooler objects.

A microwave is an example of radiation.

Heat moves from warmer objects to cooler objects.

The molecules in warmer objects move faster than the molecules in cooler objects.

Heat is the measure of thermal energy.