Scientific Variables

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What is an independent variable?

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The independent variable is the factor that is changed or controlled in an experiment to test its effects 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.

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What is a control variable?

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

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What is the first step in a scientific experiment?

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The first step in a scientific experiment is to identify a question or problem that needs to be investigated.

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In an experiment, what does the term 'hypothesis' refer to?

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

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What is the purpose of conducting an experiment?

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The purpose of conducting an experiment is to test a hypothesis and gather data to support or refute it.

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What is the significance of having a control group in an experiment?

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A control group is used as a standard for comparison to determine the effect of the independent variable.

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How does one identify the independent variable in an experiment?

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The independent variable is identified as the one that is deliberately changed or manipulated by the experimenter.

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What is the role of data in scientific experiments?

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Data is collected during experiments to provide evidence that supports or contradicts the hypothesis.

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

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The amount of sunlight the plants receive.