Standard Science Primary 4 Energy

Why is the handle of a kettle usually made of plastic instead of metal?

A Plastic is waterproof.
B Metal is too heavy.
C Plastic is a better conductor of heat.
D Plastic is a poor conductor of heat.
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Worked Solution

Step 1: The kettle body is metal to boil water quickly (good conductor). Step 2: The handle must stay cool so we can hold it. Step 3: Poor conductors of heat (insulators) like plastic slow down heat flow to the hand.

Correct answer: Plastic is a poor conductor of heat.

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