Standard Science Primary 3 Diversity

Stan performed an experiment to test the hardness of four materials by scratching them against each other. Based on the results in the table, which material is the SOFTEST?

A Material Y
B Material X
C Material W
D Material Z
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Worked Solution

Step 1: Hardness is the ability of a material to resist being scratched. Step 2: A softer material will have scratches when rubbed against a harder one. Step 3: Material Y has the most 'Yes' entries for scratches, making it the softest.

Correct answer: Material Y

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