Independent vs. 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 the amount of sunlight is changed to see its effect on plant growth, what is the independent variable?

Back

The independent variable is the amount of sunlight.

Front

In an experiment, if the height of a plant is measured to see how it responds to different amounts of water, what is the dependent variable?

Back

The dependent variable is the height of the plant.

Front

What is the relationship between independent and dependent variables?

Back

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

Front

Give an example of an independent variable in a study about how temperature affects the rate of a chemical reaction.

Back

The independent variable could be the temperature of the reaction.

Front

Give an example of a dependent variable in a study about how temperature affects the rate of a chemical reaction.

Back

The dependent variable could be the rate of the chemical reaction.

Front

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

Back

Identifying these variables helps to clarify the purpose of the experiment and ensures that the results can be accurately interpreted.

Front

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 valid.

Front

In a study examining how different fertilizers affect plant growth, what could be a controlled variable?

Back

A controlled variable could be the type of plant used in the study.