Independent/Dependent Variables

Front

What is an independent variable?

Back

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

Front

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.

Tags

NGSS.MS-PS2-2

Front

What is a control variable?

Back

Control variables are the factors that are kept constant throughout an experiment to ensure that the results are valid.

Front

In the question 'Will a person fall asleep faster if they listen to music?', what is the independent variable?

Back

The independent variable is 'listening to music'.

Front

In the question 'Will a person fall asleep faster if they listen to music?', what is the dependent variable?

Back

The dependent variable is 'time to fall asleep'.

Front

What is the purpose of control variables in an experiment?

Back

Control variables are used to ensure that the experiment is fair and that the results are due to the independent variable.

Front

In the experiment 'Does eating breakfast improve test scores?', what is the independent variable?

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The independent variable is 'eating breakfast or not'.

Front

In the experiment 'Does eating breakfast improve test scores?', what is the dependent variable?

Back

The dependent variable is 'the grade you got on the test'.

Front

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

Back

An example of a control variable could be 'the type of pot used for the plants'.

Front

Why is it important to identify independent and dependent variables in an experiment?

Back

Identifying these variables helps to clarify the relationship being tested and ensures that the experiment is designed correctly.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4