what is convection
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transfer of heat from hot place to cold through liquid is called convection.
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Convection is the circular motion that happens when warmer air or liquid — which has faster moving molecules, making it less dense — rises, while the cooler air or liquid drops down.
Examples of Convection. Boiling water - The heat passes from the burner into the pot, heating the water at the bottom. Then, this hot water rises and cooler water moves down to replace it, causing a circular motion. ... Hot air balloon - A heater inside the balloon heats the air and so the air moves upward.
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