Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 16 - Think and Explain: 54

Answer

Temperature differences determine the direction of heat flow, but it is thermal energy that does the flowing, i.e., heat. Furthermore, if one of the objects is larger, or has a large specific heat capacity, it might only change in temperature by 1 degree while the other object changes by, say, 10 degrees, so it would be incorrect to talk about the flow of temperature.
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