Exploring Science Process Skills

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Operational Definition

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A clear, precise description of how a concept or variable is measured or defined.

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Why is it important to have an operational definition in science?

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It is important to have an operational definition in science to ensure clarity, consistency, and replicability in research.

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Example of an operational definition for 'height'.

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Height is the measurement of an object from its base to its top, measured in centimeters or inches.

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What does inference mean in science?

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Inference in science means drawing conclusions based on evidence and reasoning.

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How can you make an inference from an observation?

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You can infer by analyzing observations and identifying patterns to draw conclusions.

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What is the difference between an observation and an inference?

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An observation is a fact; an inference is a conclusion based on that fact.

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What are variables in a scientific experiment?

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Variables in a scientific experiment are elements that can change, including independent, dependent, and controlled variables.

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Name the two main types of variables in an experiment.

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Independent variable and dependent variable

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Dependent variable

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A dependent variable is the outcome variable that researchers measure in an experiment.

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Independent Variable

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An independent variable is the variable that is changed or controlled in a scientific experiment.