A room has a heater placed near the floor. The heater warms the air near it.
What happens to the density of the air as it warms, and how does it move?
Decreases, moves up
Decreases, stays at the bottom
Increases, moves up
Increases, stays at the bottom
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.