An electric heater is mounted on the wall near the floor of a room. The heater warms the surrounding air and releases it into the room.
What happens to the warm air released from the heater and why?
It falls because it is less dense than cold air.
It falls because it is more dense than cold air.
It rises because it is less dense than cold air.
It rises because it is more dense than cold air.
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.