Fig. 6.1 shows a wood burner inside a cabin. When the weather outside is cold, the wood burner keeps the cabin warm.
(a)[3]
Explain how thermal energy from the wood burner warms the cabin by convection. Use your understanding of air density in your answer. You may refer to Fig. 6.1.
(b(i))[2]
Explain how the dull black surface helps to warm the cabin.
(b(ii))[2]
Explain how the shiny foil helps to warm the cabin.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Air near the wood burner is heated and expands” …