Curriculum
Science — Second Preparatory
Unit 1: Matter and Energy
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Unit 2: Matter and Chemical Reactions
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Unit 3: Energy Flow in Photosynthesis and Respiration
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Unit 4: Geological Processes
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Text lesson
Heat Transfer
Heat Transfer
Convection
Convection
- Convection is the transfer of heat by the movement of the particles of a liquid or gas themselves. When the bottom of a pan of water is heated, the water there expands and becomes less dense, so it rises. Cooler, denser water sinks to the bottom, and convection currents form that carry heat through the whole liquid.
- Convection does not happen in solids, because their particles do not move from their places.
- Examples of convection include sea and land breezes, hot air rising above a heater, and the movement of warm air in a room.
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