Controlled, Independent & Dependent Variables

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What is a controlled experiment?

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A controlled experiment is a scientific test where one variable is changed while all others are kept constant to isolate the effects of that variable.

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How many variables can be tested in a controlled experiment?

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One.

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What is the independent variable in an experiment?

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The independent variable is the factor that is changed or manipulated by the experimenter.

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What is the dependent variable in an experiment?

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The dependent variable is the factor that is measured or observed in response to changes in the independent variable.

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What are controlled variables?

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Controlled variables are factors that are kept constant throughout an experiment to ensure that the results are valid.

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What is a scientific experiment?

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A procedure that tests a hypothesis by collecting information under controlled conditions.

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What is the purpose of repeating experiments?

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Repeating experiments helps to verify results and ensure reliability.

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What is an example of an independent variable?

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In an experiment testing how light affects plant growth, the amount of light is the independent variable.

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What is an example of a dependent variable?

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In an experiment testing how light affects plant growth, the height of the plants is the dependent variable.

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What are the three types of variables in an experiment?

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Independent variables, dependent variables, and controlled variables.