Independent / Dependent Variable Review

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What is an independent variable?

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The independent variable is the one factor that is changed or manipulated in an experiment to observe its effect on the dependent variable.

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What is a dependent variable?

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The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

In an experiment, what do you do with the independent variable?

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You change the independent variable to see how it affects the dependent variable.

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What is the purpose of a control variable in an experiment?

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Control variables are factors that are kept constant to ensure that any changes in the dependent variable are due to the manipulation of the independent variable.

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If a scientist is testing how different amounts of sunlight affect plant growth, what is the independent variable?

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The amount of sunlight is the independent variable.

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If a scientist is testing how different amounts of sunlight affect plant growth, what is the dependent variable?

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The growth of the plant is the dependent variable.

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What is the relationship between independent and dependent variables?

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The independent variable is manipulated to observe its effect on the dependent variable.

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Why is it important to identify variables in an experiment?

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Identifying variables helps to clarify the focus of the experiment and ensures that the results are valid and reliable.

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What is an example of a dependent variable in a study measuring the effect of temperature on cricket chirping?

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The number of chirps made by the cricket is the dependent variable.

Front

What is an example of an independent variable in a study measuring the effect of temperature on cricket chirping?

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The temperature is the independent variable.