Name three mechanisms of heat transfer.

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Multiple Choice

Name three mechanisms of heat transfer.

Heat is transferred by three ways: conduction, convection, and radiation. Conduction is energy transfer through direct contact or through a solid, as particles collide and pass on their extra energy; a metal spoon getting hot in soup is a familiar example. Convection happens in fluids when heated regions become less dense and rise while cooler regions sink, creating a circulating current; warm air or boiling water demonstrate this. Radiation is energy carried by electromagnetic waves and can travel through empty space; sunlight warming the Earth is a classic case. The best answer lists exactly these three mechanisms. The others fall short because one mentions only radiation, another repeats conduction and omits radiation, and another uses terms tied to light behavior rather than heat transfer mechanisms.

Heat is transferred by three ways: conduction, convection, and radiation. Conduction is energy transfer through direct contact or through a solid, as particles collide and pass on their extra energy; a metal spoon getting hot in soup is a familiar example. Convection happens in fluids when heated regions become less dense and rise while cooler regions sink, creating a circulating current; warm air or boiling water demonstrate this. Radiation is energy carried by electromagnetic waves and can travel through empty space; sunlight warming the Earth is a classic case.

The best answer lists exactly these three mechanisms. The others fall short because one mentions only radiation, another repeats conduction and omits radiation, and another uses terms tied to light behavior rather than heat transfer mechanisms.

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