(a)[1]
Determine the increase in the water’s temperature.
(b)[3]
Suggest three improvements he could make to increase the thermal energy absorbed.
(c)[2]
Describe how the thermal energy is transferred from the Sun to the water inside the pipe.
Physics 0625 · IGCSE · Transfer of thermal energy
Transfer of thermal energy — practice question
A student builds a device to absorb thermal energy from the Sun. Fig. 6.1 presents the device. The labels shown are thermometer, Tank A, cold water, white plastic pipe, Sun, Tank B and warm water. The student puts the white plastic pipe in sunlight. The cold water moves slowly from Tank A to Tank B. Energy from the Sun warms the water in the pipe. Fig. 6.2 shows the temperatures in Tank A and Tank B. Thermometer showing temperature in Tank A and Thermometer showing temperature in Tank B, each marked from -10 ^{\circ}C to 110 ^{\circ}C.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “23 ^{\circ}C is subtracted from 26 ^{\circ}C, so 26 - 23 = 3 ^{\circ}C” …
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