A radiator is located near the floor of a room. The radiator warms the air near it.
What happens to the density of the air as it warms, and how does it move?
Density decreases, and it moves up
Density decreases, and it stays near the floor
Density increases, and it moves up
Density increases, and it stays near the floor
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.