Independent and Dependent Variables

Front

What is an independent variable?

Back

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

Front

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.

Front

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

Back

The growth of the plants.

Front

What is the purpose of controlling variables in an experiment?

Back

To ensure that the results are due to the independent variable and not other factors.

Front

If you are testing how different temperatures affect the rate of a chemical reaction, what is the independent variable?

Back

The temperature.

Front

If a student measures how far a ball bounces after being dropped from different heights, what is the dependent variable?

Back

The height of the bounce.

Front

In the question 'Does the type of shoe worn during a 30 meter dash affect the speed of the runner?', what is the independent variable?

Back

The type of shoe.

Front

What is an example of a controlled variable in an experiment?

Back

Keeping the same type of soil when testing different fertilizers.

Front

How does changing the amount of water given to a plant affect its growth? Identify the independent variable.

Back

The amount of water.