Scientific Method Vocabulary

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Hypothesis

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A possible explanation to a question that must be testable.

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Independent Variable

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

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Observation

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The process of gathering information using the senses.

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Inference

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The process of making a deduction or assumption based on pre-experimental observations.

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Control

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The part of an experiment where no variables are changed.

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Dependent Variable

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The variable in an experiment that is measured and affected by the independent variable.

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Constant

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Factors in an experiment that remain the same throughout.

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Prediction

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A statement about what will happen in the future based on observations or hypotheses.

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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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Scientific Law

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