PH-719
Convection
Physics · Secondary 3 · Medium · Convection
Air in a room is heated by a radiator near the floor. Which process mainly transfers thermal energy to the rest of the room air, and how?
- Conduction: hot air conducts heat to the walls only.
- Convection: warm air rises and cooler air sinks to form a current.
- Radiation: only infrared waves heat the air directly.
- Conduction: air molecules stay fixed but vibrate more.
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