Independent & 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 in an experiment. It is affected by changes in the independent variable.

Front

In an experiment, what does the independent variable represent?

Back

The independent variable represents the factor that is manipulated or changed by the scientist.

Front

In an experiment, what does the dependent variable represent?

Back

The dependent variable represents the outcome or effect that is measured in response to changes in the independent variable.

Front

What is the purpose of a control in an experiment?

Back

A control is used to provide a standard for comparison, ensuring that the results are due to the independent variable.

Front

How can you identify the independent variable in a question?

Back

The independent variable is usually the one that is being tested or changed in the experiment.

Front

How can you identify the dependent variable in a question?

Back

The dependent variable is usually the outcome that is measured or observed in response to the independent variable.

Front

Example of an independent variable:

Back

In an experiment testing how sunlight affects plant growth, the amount of sunlight each plant receives is the independent variable.

Front

Example of a dependent variable:

Back

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

Front

What is the relationship between independent and dependent variables?

Back

The independent variable is manipulated to observe how it affects the dependent variable.