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An experiment tests the effect of water depth on pressure. Liquids of different densities are used at different depths. What difficulty does this create?

Answer and explanation

Correct answer: Effects of depth and density cannot be separated

Pressure depends on both depth and density so changing both creates confusion. Liquid density should be kept constant.

Related tags

VariablesPressureDensityConfounding VariableVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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