SC-1469
Convection
Lower Sec Science · Secondary 2 · Hard · Convection
In a room heated by a heater placed near the floor, the air at the top of the room becomes warm after some time. Which statement best describes how the warm air reaches the top?
- Warm air near the heater becomes less dense and rises to the top.
- Warm air near the heater becomes denser and sinks to the floor.
- Cool air at the top becomes less dense and sinks to the heater.
- Heat is only transferred by radiation directly to the ceiling.
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