Standard Science Primary 3 Diversity

Four rods made of different materials (A, B, C, D) were used to scratch one another. The results are shown below. Which material is the SOFTEST?

A Material A
B Material B
C Material C
D Material D
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Worked Solution

Step 1: Hardness is the ability to resist scratches. Step 2: The softest material is the one that gets scratched by the most other materials. Step 3: Material B was scratched by all others.

Correct answer: Material B

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