Standard Science Primary 3 Diversity

Why is plastic often used to make raincoats instead of cotton?

A Plastic is lighter than cotton.
B Plastic is stronger than cotton.
C Plastic is more flexible than cotton.
D Plastic is waterproof while cotton is absorbent.
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Worked Solution

Step 1: The purpose of a raincoat is to keep the user dry. Step [2-9]: Plastic does not allow water to pass through (waterproof). Step [2-9]: Cotton absorbs water and would make the user wet.

Correct answer: Plastic is waterproof while cotton is absorbent.

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