0 1 A student investigates the amount of energy wasted in four different lamps. She uses the equipment shown in Figure 1. 1 . 1 Plan an investigation to find out how much the lamp affects the temperature of the surroundings in 5 minutes. The first step has been given. 1 Set up the apparatus using lamp 1 and take the starting temperature. 2 3 A (3 marks ) 0 1 . 2 Explain why it is important to measure the height of the lamp above the thermometer