Chapter 1 - Scientific Method

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Last updated 3:12 PM on 7/18/26
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9 Terms

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Scientific Method Steps

Observe, question, hypothesize, experiment, analyze, conclude, communicate.

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Independent Variable (Treatment)

The variable you change or manipulate in an experiment.

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Dependent Variable (Response)

The variable you measure or observe in response to changes in the independent variable.

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Control in Experiments

A baseline group used for comparison to ensure results are due to the independent variable.

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Controlled Variables

Variables kept constant to ensure only the independent variable affects the outcome.

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Hypothesis

An educated guess or prediction about the outcome of an experiment.

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Theory

A well-supported explanation of natural phenomena based on repeated testing and evidence.

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Null Hypothesis

A statement that there is no effect or difference, used as a default to test against.

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Control Group

The group in an experiment that does not receive the treatment (e.g., no fertilizer).