9
QuizMultiple Choice

Cumulative Exam — Cumulative exam

Question 9 • LHS Physical Science

Which of these actions would decrease heat transfer between two objects?

Answer
A
increasing the temperature of the warmer object
B
increasing the area of their contact
C
reducing the thermal energy of the cooler object
D
reducing the time of their contact

Explanation

Heat transfer occurs while objects at different temperatures are in contact. Reducing their contact time gives heat less time to flow from the warmer object to the cooler one, decreasing the total heat transferred. Increasing the contact area or the temperature difference would generally increase heat transfer.

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