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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.
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First broadcast:
21 November 2008

Classroom Ideas

This clip could be used to explain the four methods of heat transfer. After watching it, students could be arranged into groups. Each group could take one of the methods of heat transfer (either 'conduction', 'convection', 'evaporation' or 'radiation') and construct a short presentation/diagram/model which they can use to describe the method of heat transfer to the rest of the class. Students could come up with examples of their heat transfer method in action in a practical situation.

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