Advanced Science Primary 4 Energy

Ravi placed a metal spoon and a plastic spoon into a bowl of hot soup. After 5 minutes, the metal spoon felt much hotter. Why?

A Plastic absorbs heat faster than metal.
B The metal spoon was larger than the plastic spoon.
C Heat travels only through metals.
D Metal is a better conductor of heat than plastic.
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Worked Solution

Step 1: Heat travels from the hot soup to the spoons. Step 2: Metal is a good conductor and allows heat to flow through it quickly. Step 3: Plastic is a poor conductor (insulator).

Correct answer: Metal is a better conductor of heat than plastic.

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