Fig. 3.1 depicts a portable shower in use at a campsite. The bag contains water. Infrared radiation from the Sun is used to heat the water.
(a(i))[1]
Explain the reason the shower bag is coated black.
(a(ii))[1]
Explain one disadvantage of making radiation from the Sun the only heat source for the water.
(b)[2]
Solar energy is a renewable energy resource. State two more renewable energy resources.
(c)[4]
Calculate the energy incident on the shower bag during the day. Show your working.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A better absorber of radiation OR a poorer reflector” …