Advanced Science Primary 4 Energy

Ross wants to choose a material for a container to keep his soup hot for the longest time. He tests four materials. Which property should the chosen material have?

A It should be a poor conductor of heat.
B It should be a good conductor of heat.
C It should have a high transparency.
D It should be a magnetic material.
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Worked Solution

Step 1: To keep soup hot, heat loss to the surroundings must be minimized. Step [2-9]: Poor conductors of heat (insulators) slow down the transfer of heat energy. Step [2-9]: Therefore, an insulator is the best choice for heat retention.

Correct answer: It should be a poor conductor of heat.

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