(a(i))[2]
The reading on thermometer Y is not 24 ^{\circ}C. Explain why the two thermometers do not give the same reading.
(a(ii))[1]
Suggest a possible value for the reading on thermometer Y.
(b)[4]
Describe how the student can demonstrate convection in a liquid using the equipment shown in Fig. 6.2. You may include a diagram in your answer.