Scientific Method

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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 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 changed or controlled in an experiment to test its effects 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 treatment and is used as a benchmark to measure how the other tested subjects do.

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What is quantitative data?

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Data that can be measured and expressed numerically, such as height, weight, and temperature.

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What is qualitative data?

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Data that describes qualities or characteristics and is often subjective, such as color, texture, or taste.

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How many variables should you change in an experiment?

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Only one variable should be changed at a time to ensure that the results are due to that variable.

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What is a hypothesis?

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

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What is a scientific theory?

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A well-substantiated explanation of an aspect of the natural world that is based on a body of evidence.

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What is a scientific law?

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A statement based on repeated experimental observations that describes some aspect of the universe.