Independent, Dependent, and Controlled Variables

Front

What is an independent variable?

Back

The independent variable is the factor that is changed or manipulated in an experiment to observe its effect on the dependent variable.

Front

What is a dependent variable?

Back

The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

What are controlled variables?

Back

Controlled variables are the factors that are kept constant throughout an experiment to ensure that any changes in the dependent variable are due to the independent variable.

Front

Why is it important to control variables in an experiment?

Back

Controlling variables is important to ensure that the results of the experiment are valid and that the effect of the independent variable can be accurately determined.

Front

How many independent variables should be tested in a controlled experiment?

Back

Only one independent variable should be tested at a time in a controlled experiment.

Front

What is the relationship between independent and dependent variables?

Back

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

Front

Give an example of an independent variable in an experiment.

Back

In an experiment to test the effect of sunlight on plant growth, the amount of sunlight each plant receives is the independent variable.

Front

Give an example of a dependent variable in an experiment.

Back

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

Front

What is the purpose of a control group in an experiment?

Back

The control group serves as a baseline to compare the effects of the independent variable, ensuring that the results are due to the variable being tested.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between the independent and dependent variables.