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A student measures soil temperature at different depths. Which is the dependent variable?

Answer and explanation

Correct answer: Soil temperature

The direct answer is C, soil temperature. In an experiment, the independent variable is the factor deliberately changed, while the dependent variable is the result measured in response. Here the student measures temperature at different depths. Depth is the changing factor, and soil temperature is the measured outcome. Therefore option C is correct. Option A, soil depth, is the independent variable because different depths are selected. Option B, soil type, is not identified as the measured outcome and should normally be kept the same if it is being controlled. Option C, soil temperature, is recorded as the response and is therefore dependent. Option D, time of measurement, is not the stated result; it may be controlled or recorded, but it is not the dependent variable in this setup. Exam cue: ask, “What is being measured?” That is usually the dependent variable; ask, “What is changed?” That is usually the independent variable.

Related tags

Soil-TemperatureDependent-VariableDepthVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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