Independent and Dependent Variables

Front

What is an independent variable?

Back

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

Front

What is a dependent variable?

Back

A dependent variable is the variable that is measured and affected in an experiment, responding to changes in the independent variable.

Front

In the context of running speed, if Diamond's speed affects how quickly she can run 4 laps, what is the independent variable?

Back

Diamond's running speed.

Front

In the context of a lunch line, if the length of the line affects how long you wait, what is the dependent variable?

Back

How long you wait in line.

Front

If the amount of water used affects the price of the water bill, what is the independent variable?

Back

The amount of water used.

Front

If the number of students affects the amount of jolly ranchers needed, what is the dependent variable?

Back

The amount of jolly ranchers needed.

Front

How can you identify the independent variable in an experiment?

Back

The independent variable is usually the one that is manipulated or changed by the experimenter.

Front

How can you identify the dependent variable in an experiment?

Back

The dependent variable is usually the one that is observed and measured to see how it is affected by the independent variable.

Front

In a study about plant growth, if the amount of sunlight is changed to see its effect on growth, what is the independent variable?

Back

The amount of sunlight.

Front

In a study about plant growth, if the height of the plants is measured, what is the dependent variable?

Back

The height of the plants.