(a(i))[2]
On Fig. 6.1, add two arrows to indicate how thermal energy is transferred around the oven by convection.
(a(ii))[3]
Explain how thermal energy is transferred around the oven by convection. Use ideas about density and expansion.
(a(iii))[1]
Choose a word from the box to finish the sentence. Thermal energy travels at the speed of light by [BLANK].
(b)[1]
Suggest the best place to position the smoke detector in the kitchen.