Standard Science Primary 3 Diversity

Siti tried to scratch a glass tile with a plastic ruler. She found that the ruler could not leave a mark on the glass. This is because __________.

A glass is harder than plastic
B plastic is stronger than glass
C glass is more flexible than plastic
D plastic is more transparent than glass
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Worked Solution

Step 1: Hardness is defined as the ability to resist being scratched. Step 2: If the ruler cannot scratch the glass, it means the glass is the harder material. Step 3: Final Answer: glass is harder than plastic.

Correct answer: glass is harder than plastic

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