Advanced Science Primary 4 Energy

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

A Metal has a higher starting temperature.
B Metal is a better conductor of heat than plastic.
C Plastic loses heat faster than metal.
D Hot soup only gives heat to metal.
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Worked Solution

Step 1: Both spoons are in the same hot soup. Step 2: Metal allows heat to flow through it quickly. Step 3: Plastic is a poor conductor (insulator). Step 4: Heat reaches the handle of the metal spoon faster.

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

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