How do you know that heat is moving in a bowl of steaming soup with a spoon?
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How do you know that heat is moving in a bowl of steaming soup with a spoon?
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Answer:
Convection is the transfer of heat in air or a fluid through currents. As it heats up, the particles spread out and become less dense. The warm water on the bottom of the pot rises and displaces the cold water. As this occurs, the cold water sinks.