Episode 4 — Heat Transfer

Convection

Learners will be able to:

• Define convection as a method of heat energy transfer • Distinguish between conduction and convection • Explain how convection currents form in liquids and gases in terms of changes in particle density • Describe examples of convection currents, such as peas moving in boiling water and a heater warming a room • Explain why convection occurs in liquids and gases but not in solids