Scientific Method and Variables

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What is the scientific method?

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A systematic process used for scientific investigation, involving observation, hypothesis formulation, experimentation, and conclusion.

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What is a dependent variable?

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The variable that is measured or observed in an experiment; it responds to changes in the independent variable.

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What is an independent variable?

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The variable that is deliberately changed or manipulated in an experiment to observe its effect on the dependent variable.

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What is a control group?

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A group in an experiment that does not receive the experimental treatment and is used as a benchmark to measure how the other tested subjects do.

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What is the purpose of a hypothesis?

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A testable prediction about the relationship between two or more variables.

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What should you do before starting an experiment?

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Read all instructions carefully and ensure you understand the procedure.

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Why is it important to only change one variable at a time in an experiment?

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To ensure that any observed effects can be attributed to that variable alone, allowing for clear conclusions.

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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 refutes the hypothesis.

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What does it mean to 'analyze data'?

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To examine and interpret the collected data to draw conclusions about the experiment.

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What is a scientific conclusion?

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A summary of the results of an experiment, stating whether the hypothesis was supported or not.