Question

The process of hot air rising over cold air is called

Answer 1

Convection

• transfer of energy as it is carried through a liquid or gas
• heat transfer by a circulation of rising warm air (less dense) and sinking cooler air (denser).
• “Hot air rises” the more dense air sinks forcing the less dense air upward

Examples

• macaroni rising and falling in a pot of heated water
• heat rising from a chimney
• an old-fashioned radiator (creates a convection cell in a room by emitting warm air at the top and drawing in cool air at the bottom)