Scientific Investigations

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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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How many variables should a controlled experiment contain?

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A controlled experiment should contain only 1 variable.

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What is a constant in an experiment?

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A constant is a factor that does not change during an experiment.

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What is a variable in an experiment?

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A variable is a factor that can change in an experiment.

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Why is it important to repeat experiments?

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Repeating experiments is important to ensure the validity of results; they should be consistent each time.

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What is the purpose of a hypothesis in scientific investigations?

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

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What is the difference between independent and dependent variables?

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The independent variable is the one that is changed or controlled, while the dependent variable is the one that is measured or observed.

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What is the 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 is data collection in scientific investigations?

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Data collection is the process of gathering and measuring information on variables of interest in a systematic way.

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

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A control group is used as a benchmark to compare the results of the experimental group.