Standard Science Primary 3 Diversity

Ravi wants to test the strength of four different types of strings. What should he do to ensure a fair test?

A Use strings made of the same material.
B Use strings of the same thickness and length.
C Hang the strings at different heights.
D Use different weights for each string.
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Worked Solution

Step 1: In a fair test, only the material being tested should change. Step 2: All other variables (thickness, length) must be kept the same. Step 3: This ensures that the results are due to the material itself.

Correct answer: Use strings of the same thickness and length.

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