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The wing length of a paper aeroplane is changed and its flight distance is measured. Which should be a controlled variable?

Answer and explanation

Correct answer: Type of paper

Keeping the paper type the same allows only the effect of wing length to be tested. A controlled variable makes the experiment fair.

Related tags

ScienceControlled-VariablePaper-PlaneFair-TestVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceClass 9 Mcq

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