Heat transfer physics

Heat transfer physics is when heat moves from one place to another. Heat can be transferred in three ways: radiation, conduction, and convection.

Radiation happens when heat moves through empty space. This is what happens when the sun's heat reaches us here on Earth.

Conduction happens when heat moves through a solid object, like a metal spoon. When the metal is heated, the heat energy travels through it from one side to the other.

Convection happens when heat moves through liquids or gases, like water or air. For example, warm air near a heater will rise and be replaced by cooler air which is then heated up and rises too, in a continuous cycle.