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Explain convection
Heat transfer takes place by conduction, convection and radiation.
Convection is the circular motion that happens when warmer air or liquid — which has faster-moving molecules, making it less dense — rises, while the heavier cooler air or liquid drops down. Convection is a major factor in weather. That current can result in wind, clouds, or other weather.
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated. The denser cold liquid or gas falls into the warm areas.
Updated on: 10-Oct-2022
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