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What is an independent variable?

Back

An independent variable is the factor that is changed or manipulated in an experiment to observe its effect on the dependent variable.

Tags

NGSS.MS-PS2-2

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What is a dependent variable?

Back

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

Front

In an experiment, if you change the amount of sunlight a plant receives, what is the independent variable?

Back

The amount of sunlight.

Tags

NGSS.MS-LS1-5

Front

In an experiment measuring how different fertilizers affect plant growth, what is the dependent variable?

Back

The growth of the plants.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Front

If you are testing how the temperature of water affects the time it takes for sugar to dissolve, what is the independent variable?

Back

The temperature of the water.

Tags

NGSS.MS-PS1-4

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If a scientist is studying how the type of music affects students' test scores, what is the dependent variable?

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The students' test scores.

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What is the relationship between independent and dependent variables?

Back

The independent variable is manipulated to observe its effect on the dependent variable.

Tags

NGSS.MS-PS3-4

Front

In an experiment, if you are testing how different amounts of water affect the height of a plant, what is the independent variable?

Back

The different amounts of water.

Tags

NGSS.MS-LS2-1

Front

If you are investigating how the type of exercise affects heart rate, what is the dependent variable?

Back

The heart rate.

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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 due to the independent variable.

Tags

NGSS.MS-PS3-4