Experimental Design

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What is an independent variable?

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The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

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What is a dependent variable?

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The dependent variable is the factor that is measured or counted in an experiment, which responds to changes in the independent variable.

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What is a control variable?

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Control variables are the factors that are kept constant throughout an experiment to ensure that the results are due to the independent variable.

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Why is it important to change only one variable in an experiment?

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Changing only one variable allows for a clear understanding of how that specific variable affects the outcome, making it easier to draw conclusions.

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What is a hypothesis?

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A hypothesis is a testable statement or prediction about the relationship between two or more variables.

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What makes a good scientific question?

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A good scientific question can be answered through experimentation and is specific, measurable, and focused.

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What is the purpose of a control group in an experiment?

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The control group serves as a baseline to compare the effects of the independent variable, helping to validate the 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.

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What is an experiment?

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An experiment is a structured procedure carried out to investigate a hypothesis by manipulating variables and observing outcomes.

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What is a scientific method?

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The scientific method is a systematic approach to research that involves making observations, forming a hypothesis, conducting experiments, and drawing conclusions.