Independent/Dependent Variables

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What is an independent variable?

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An independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

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What is a dependent variable?

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

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What is a control variable?

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Control variables are the factors that are kept constant throughout an experiment to ensure that the results are due to the independent variable.

Front

In an experiment, what is the purpose of having a control group?

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The control group serves as a baseline to compare the effects of the independent variable, helping to validate the results.

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How many independent variables should be tested in a controlled experiment?

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Only one independent variable should be tested at a time to ensure clear results.

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What is an example of an independent variable in a plant growth experiment?

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The type of fertilizer used is an example of an independent variable.

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What is an example of a dependent variable in a plant growth experiment?

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The height of the plants after a certain period is an example of a 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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What is a hypothesis in the context of an experiment?

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A hypothesis is a testable prediction about the relationship between the independent and dependent variables.

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Why is it important to have equal conditions in an experiment?

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Equal conditions ensure that the results are due to the independent variable and not other factors.