Independent/Dependent Variables

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What is an independent variable?

Back

The independent variable is the factor that is changed or manipulated in an experiment to test its effects on the dependent variable.

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What is a dependent variable?

Back

The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

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What is a control variable?

Back

A control variable is a factor that is kept constant throughout an experiment to ensure that the results are due to the independent variable.

Front

What is the purpose of using graphs in science?

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

Front

In the hypothesis 'If salt is added to water then the boiling point of water will decrease', what is the independent variable?

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Whether salt is added or not.

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In the hypothesis 'If salt is added to water then the boiling point of water will decrease', what is the dependent variable?

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The boiling point of water.

Front

What is a scientific question?

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A scientific question is a question that can be tested through experimentation and observation.

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What is the role of a constant variable in an experiment?

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

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What does it mean to control an experiment?

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To control an experiment means to keep all variables constant except for the independent variable to ensure accurate results.

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What is the difference between qualitative and quantitative data?

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Qualitative data describes characteristics or qualities, while quantitative data involves numerical measurements.