Convection
- Created by: Annie
- Created on: 19-11-12 18:09
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- Convection
- Only happens in liquids or gases - where particles are free to move.
- Sea Breezes
- During the day - the land heats up quicker than the sea, Sun heats land hot air rises and cools and drops so the sea therefore cools and air travels back to land.
- During the evening - the sea will be slightly warmer because the breeze goes out to sea.
- Radiator
- 1. Gives out heat to surrounding air as air molecules collide with surface of radiator.
- 2. As Air becomes hotter it expands and increases in density
- 3. The less dense air rises towards ceiling and displaces cooler air.
- 4. The hot air replaces cold air which gradually falls to take place of the hot air near the radiator.
- 5. As the cooler air molecules collide with the surface of radiator they gain heat and cycle starts again
- 4. The hot air replaces cold air which gradually falls to take place of the hot air near the radiator.
- 3. The less dense air rises towards ceiling and displaces cooler air.
- 2. As Air becomes hotter it expands and increases in density
- 1. Gives out heat to surrounding air as air molecules collide with surface of radiator.
- Density describes how many particles are packed together in one place.
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