Science & Engineering Practices

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What is an independent variable?

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The variable in an experiment that is controlled or changed by the scientist.

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What is a dependent variable?

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The variable that is measured or observed in an experiment, which changes in response to the independent variable.

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What is a quantitative observation?

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An observation that includes numbers and measurements.

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What is a qualitative observation?

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An observation that describes qualities or characteristics without using numbers.

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What is the purpose of a control in an experiment?

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To provide a standard for comparison and to ensure that the results are due to the independent variable.

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What does it mean to analyze data?

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To examine and interpret data to draw conclusions or make decisions.

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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 the scientific method?

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A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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What is a graph?

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A visual representation of data that shows the relationship between variables.

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What is the X-axis in a graph?

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The horizontal line on a graph that typically represents the independent variable.