Independent/Dependent Variables

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What are independent variables?

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Independent variables are the factors that are changed or manipulated in an experiment to observe their effect on the dependent variable.

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NGSS.MS-PS2-2

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What are dependent variables?

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Dependent variables are the factors that are measured or observed in an experiment, which are affected by changes in the independent variable.

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NGSS.MS-PS1-2

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What is a constant variable?

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Constant variables are the factors that remain unchanged throughout an experiment to ensure that the test results are valid.

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NGSS.MS-PS2-2

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Why do we use graphs in science?

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Graphs are used to record and display data, show trends, and predict outcomes based on experimental results.

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NGSS.MS-PS3-1

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What is the manipulated variable in an experiment?

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The manipulated variable is the independent variable that is intentionally changed or tested in an experiment.

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NGSS.MS-PS2-2

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What is the responding variable in an experiment?

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The responding variable is the dependent variable that is measured to see how it responds to changes in the independent variable.

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How can you identify the independent variable in a scientific question?

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The independent variable is usually the 'what is being changed' part of the question.

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NGSS.MS-PS2-2

NGSS.MS-PS3-4

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How can you identify the dependent variable in a scientific question?

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The dependent variable is usually the 'what is being measured' part of the question.

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NGSS.MS-PS2-2

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What is the purpose of a control in an experiment?

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The control is used to provide a standard for comparison, ensuring that the experiment is fair.

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NGSS.MS-PS2-2

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What is an example of an independent variable?

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In an experiment testing how sunlight affects plant growth, the amount of sunlight is the independent variable.

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NGSS.MS-LS1-5