SAT Subject Physics Practice Question 303: Answer and Explanation

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Question: 303

74. As the air around the base of a candle flame is heated, it rises and is replaced by cooler air. This illustrates what type of heat transfer?

A. Conduction
B. Convection
C. Radiation
D. Diffraction
E. Latent heat

Correct Answer: B

Explanation:

The transfer of heat due to a moving fluid (such as air) is known as convection. (D and E, by the way, are not modes of heat transfer and can therefore be eliminated immediately.)

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