The air in a room near a cold window pane cools down, causing its temperature to decrease. Which row describes the change in the density of this cooler air and the primary method of thermal energy transfer that occurs as a result?
density decreases; conduction
density decreases; convection
density increases; conduction
density increases; convection
73 exam-style questions on CIE IGCSE Physics 2.3.2 Convection. Each one has a worked solution and a mark scheme showing where the marks go.