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QuizMultiple Choice

Heat — Quiz

Question 1 • Physical Science

A student touches a freshly baked cake that was taken out of the oven. Which best explains why the cake feels hot?

Answer
A
The kinetic energy of molecules in the cake is more than the energy in the baking tray.
B
Molecules in the skin are moving faster than molecules in the cake.
C
Molecules in the cake are moving faster than molecules in the skin.
D
The kinetic energy of molecules in the baking tray is more than the energy in the cake.

Explanation

Temperature is related to the average kinetic energy of molecules: the hotter the material, the faster its molecules move on average. The freshly baked cake is hotter than the student’s skin, so molecules in the cake are moving faster than molecules in the skin. Therefore, choice D best explains why the cake feels hot.

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