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Class 9 Science Exploration: Entering the World of Secondary Science Variables in an experimentHard

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A student changes the distance between a magnet and an iron nail and measures attraction force. Which factor should be controlled?

Answer and explanation

Correct answer: Strength of the magnet

Changing magnet strength can also change the attraction force. The same magnet should be used in every trial.

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Controlled Variable Magnetism Distance Variables In An Experiment Exploration: Entering The World Of Secondary Science Exploration Entering The World Of Secondary Science Science Class 9 Mcq

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