SAT Subject Physics Practice Question 502: Answer and Explanation

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Question: 502

3. Compare a bucket of boiling water to a cup of boiling water. Which statement(s) can be made about the two containers?

I. The heat content of the two is the same.

II. The temperature of the two is the same.

III. The bucket of water contains more heat and is therefore hotter

A. I only
B. II only
C. I and III only
D. II and III only
E. I, II, and III only

Correct Answer: B

Explanation:

The correct answer is (B). The heat content of a substance is dependent on three different things, the specific heat of the substance, the mass of the substance, and the temperature of the substance. The specific heat can be disregarded since the substance is the same for both containers. The mass of the water in the cup is less than the mass of the water in the bucket, therefore the cup of water has less heat content than the bucket of water even though they are at the same temperature.

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