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If a student gives a plant different amounts of water each day what is the changed factor?

Answer and explanation

Correct answer: Amount of water

To identify the changed factor, ask what the student deliberately makes different between the experimental conditions. That factor is the independent variable. Other factors should be kept as similar as possible, and the effects may be recorded through measurements such as plant height, number of leaves, or leaf colour. These measured effects are possible dependent variables.

Option A is correct because the student changes the amount of water given each day. The plant height and leaf colour are observations or outcomes that may respond to this change, not the deliberately changed factor. The measurement time is a condition that should usually be kept consistent so that results can be compared fairly. Thus, the wording “different amounts” identifies water amount as the independent variable.

Related tags

Water AmountIndependent VariablePlant ExperimentScientific Questions And ObservationsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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