Controlled Experiments Flashcard

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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 determine the effect of that variable.

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What is an independent variable?

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

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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 changes in response to the independent variable.

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What are constants in an experiment?

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Constants are the factors that are kept the same throughout an experiment to ensure that the test is fair.

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Why is it important to change only one variable in a controlled experiment?

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Changing only one variable helps to isolate the effects of that variable, making it easier to determine its impact on the dependent variable.

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What is a hypothesis?

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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 a control group in an experiment?

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A control group is used as a standard for comparison, allowing researchers to see the effects of the independent variable.

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How can you identify the independent variable in a hypothesis?

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The independent variable is usually the cause or the factor that is being tested, often found in the 'if' part of the hypothesis.

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What is the role of data collection in experiments?

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Data collection is essential for analyzing the results of an experiment and determining whether the hypothesis is supported or not.

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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.