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In an investigation of the effect of light on a plant what type of variable is the amount of light?

Answer and explanation

Correct answer: Independent variable

In this investigation, the researcher deliberately changes the amount of light, so it is the independent variable. Plant growth, such as height or number of leaves, may change in response to the light; that would be the dependent variable. Controlled variables are conditions kept the same, such as water, soil, and type of plant. Exam tip: identify the factor that is deliberately changed as the independent variable.

Related tags

Variables In ExperimentsIndependent VariablePlant GrowthLight InvestigationScientific MethodVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary Science

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