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A student asks whether the amount of soap affects foam height. Which factor should be kept the same?

Answer and explanation

Correct answer: Amount of water

The amount of water should be controlled so that only the effect of soap amount is tested. In exams keep other influencing factors constant.

Related tags

Controlled VariableSoapFoamFair TestScientific Questions And ObservationsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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