Experimental Design & Variables

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What is the first step in every scientific experiment?

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

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What are controlled variables in an experiment?

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Controlled variables are the parts of the experiment that remain constant to ensure a fair test.

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In an experiment, what is the dependent variable?

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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 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 does a hypothesis typically include after the word 'IF'?

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A hypothesis typically includes the independent variable after the word 'IF'.

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

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The control group serves as a standard for comparison, helping to isolate the effects of the independent variable.

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How do you determine the dependent variable in an experiment?

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The dependent variable is determined by asking what you are measuring or observing as a result of changing the independent variable.

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What is the significance of replicating experiments?

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Replicating experiments helps to verify results and ensures that findings are reliable and not due to chance.

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What is a scientific conclusion?

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A scientific conclusion summarizes the results of the experiment and states whether the hypothesis was supported or not.

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What is the role of data in an experiment?

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Data is collected to provide evidence that supports or refutes the hypothesis.