Heat TransferA series of free High School Physics Video Lessons from Brightstorm online Physics series..
Thermal Energy Transfer Thermal energy transfer involves the transfer of internal energy. The three types of thermal energy transfer are conduction, convection and radiation. Conduction involves direct contact of atoms, convection involves the movement of warm particles and radiation involves the movement of electromagnetic waves.
Conduction Conduction is a type of thermal energy transfer involving direct contact. The more tightly packed the molecules within a substance are, the more conductive the substance is.
Convection Convection is the movement of warm particles within fluids. Convection is often found in the air as heated air rises and cool air falls. This is because hot molecules spread apart, making them less dense and causing them to rise. Convection is also found in the ocean as currents of different temperatures travel and interact.
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