Scientific Investigation, variables, constants, control

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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 an independent variable?

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The independent variable is the factor that is manipulated or changed in an experiment to observe its effect on the dependent 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 any changes in the dependent variable are due to the independent variable.

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What is the purpose of a hypothesis in scientific investigation?

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A hypothesis is a testable statement that predicts the relationship between the independent and dependent variables.

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How do you identify the dependent variable in an experiment?

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The dependent variable can be identified by asking what is being measured or observed as a result of changes in the independent variable.

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

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

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What is the difference between qualitative and quantitative data?

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Qualitative data describes characteristics or qualities (e.g., color, texture), while quantitative data involves numerical measurements (e.g., height, weight).

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Why is it important to repeat experiments?

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Repeating experiments helps to verify results, identify errors, and ensure that findings are reliable and valid.

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What is a scientific method?

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The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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What role do constants play in an experiment?

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Constants are the variables that are kept the same throughout the experiment to ensure that the test is fair and that the results are due to the independent variable.