Dependent and Independent 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, if you measure how tall a plant grows based on different amounts of water, what is the dependent variable?

Back

The height of the plant.

Front

What is the purpose of identifying independent and dependent variables in an experiment?

Back

Identifying these variables helps to understand the relationship between them and how changes in one can affect the other.

Front

If you are testing how different types of soil affect plant growth, what is the independent variable?

Back

The type of soil.

Front

If you are studying how the number of hours studied affects test scores, what is the dependent variable?

Back

The test scores.

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

Why is it important to have a control group in an experiment?

Back

A control group provides a baseline for comparison, helping to determine the effect of the independent variable.

Front

In a study about how temperature affects the rate of a chemical reaction, what is the independent variable?

Back

The temperature.