Parts of an Experiment

Front

What is the dependent variable in an experiment?

Back

The dependent variable is the factor that is measured or observed in an experiment, often responding to changes in the independent variable.

Tags

NGSS.MS-PS3-4

Front

What is the independent variable in an experiment?

Back

The independent variable is the one factor that a scientist changes during an experiment to observe its effect.

Tags

NGSS.MS-PS2-2

Front

What is a controlled variable?

Back

A controlled variable is a factor that is kept constant throughout an experiment to ensure that the results are valid.

Front

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 isolate the results.

Front

What does it mean to measure a variable in an experiment?

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Measuring a variable means collecting data on that variable to analyze the effects of the independent variable.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

NGSS.MS-PS3-4

Front

How does changing the independent variable affect the dependent variable?

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Changing the independent variable is expected to cause a change in the dependent variable, which is what the experiment aims to test.

Tags

NGSS.MS-PS3-4

Front

What is an example of a dependent variable in a plant growth experiment?

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In a plant growth experiment, the dependent variable could be the height of the plants after a certain period.

Tags

NGSS.MS-LS1-5

Front

What is an example of an independent variable in a soda and Mentos experiment?

Back

In a soda and Mentos experiment, the independent variable could be the type of soda used.

Front

Why is it important to have controlled variables in an experiment?

Back

Controlled variables are important to ensure that the experiment is fair and that the results are due to the independent variable alone.

Front

What is the difference between qualitative and quantitative data?

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Qualitative data describes characteristics or qualities (e.g., color, texture), while quantitative data involves numerical measurements (e.g., height, weight).