Standard Science Primary 3 Interactions

Ravi wants to test the strength of four magnets. Which of the following is a fair test?

A Use the magnets to attract paper clips from different distances.
B Use different types of paper clips.
C Count how many identical paper clips each magnet can attract from the same distance.
D Heat the magnets before testing.
Show Worked Solution

Worked Solution

Step 1: To compare strength, only the magnet should change. Step 2: All other variables (clips, distance) must stay the same. Step 3: Counting clips from a fixed distance measures attraction force.

Correct answer: Count how many identical paper clips each magnet can attract from the same distance.

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