(a)[2]
The temperature in the room is greatest near the ceiling. Explain why this happens.
(b)[4]
Explain how this lowers the transfer of thermal energy through the ceiling.
Physics 0625 · IGCSE · Transfer of thermal energy
Transfer of thermal energy — practice question
Fig. 7.1 depicts a room containing a heater.
Fig. 7.2 depicts the ceiling, which is made from an insulating material, with layers labelled: aluminium foil, foam with air trapped inside, aluminium foil.