Standard Science Primary 3 Diversity

When Material A was rubbed against Material B, a scratch was seen on Material B. This means __________.

A Both materials have the same hardness
B Material B is harder than Material A
C Material A is stronger than Material B
D Material A is harder than Material B
Show Worked Solution

Worked Solution

Step 1: Hardness is the ability of a material to resist being scratched. Step 2: If A scratches B, A is the harder material. Step 3: Final Answer: A is harder than B.

Correct answer: Material A is harder than Material B

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