The cooling unit at the top of a refrigerator is very cold.
What happens to the warmer air inside the refrigerator when it comes into contact with this cold cooling unit?
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.