The metal surface of a cooling plate is cold.
What happens to the warmer air outside the cooling plate when it comes into contact with the cold metal surface?
The density of the air decreases and the air falls.
The density of the air decreases and the air rises.
The density of the air increases and the air falls.
The density of the air increases and the air rises.
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.