Standard Science Primary 4 Energy

Why are some containers made of styrofoam used to keep drinks cold?

A Styrofoam helps the drink lose heat faster.
B Styrofoam is a good conductor of heat.
C Styrofoam prevents coldness from escaping.
D Styrofoam is a poor conductor of heat.
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Worked Solution

Step 1: To keep a drink cold, we must stop heat from the surroundings from entering it. Step 2: Styrofoam is a poor conductor (insulator). Step 3: It slows down heat gain from the environment.

Correct answer: Styrofoam is a poor conductor of heat.

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