Link to our latest notes and resources: https://drive.google.com/drive/u/2/folders/15Ld6KabsL9x9X-t4GefBgSzXFDckJFa6 2.3 Transfer of thermal energy 2.3.1 Conduction 1 Describe experiments to distinguish between good and bad thermal conductors 2 Describe thermal conduction in all solids in terms of atomic or molecular lattice vibrations and also in terms of the movement of free (delocalised) electrons in metallic conductors 2.3.2 Convection 1 Explain convection in liquids and gases in terms of density changes and describe experiments to illustrate convection 2.3.3 Radiation 1 Describe the process of thermal energy transfer by infrared radiation and know that it does not require a medium 2 Describe the effect of surface colour (black or white) and texture (dull or shiny) on the emission, absorption and reflection of infrared radiation 3 Describe how the rate of emission of radiation depends on the surface temperature and surface area of an object 4 Describe experiments to distinguish

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O Levels Transfer of Thermal Energy

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