(a(i))[1]
State the temperature shown by the thermometer in Fig. 6.1.
(a(ii))[2]
Explain why: 1. the bulb is constructed from thin glass 2. the tube, along which the liquid expands, is narrow.
(b)[4]
On Fig. 6.2, sketch a temperature-time graph while the substance cools from 40 ^{\circ}C to -20 ^{\circ}C.