Two presenters explain, using animations, the differences between methods of heat transfer. Conduction is explained as vibrations of particles in solids. Heat rising due to a reduction in density of liquids and gases in called convection. Evaporation is described as liquids absorbing heat energy and turning into gases. Radiation is explained as thermal energy travelling as a wave.

First broadcast:
21 November 2008

Students could use this clip to explore the four methods of heat transfer given. After watching it, students could explain in their own words or by using diagrams what they have learned. They could discuss examples of conduction, convection, radiation and evaporation.