Controlled, Independent & Dependent 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 measurable outcome in an experiment that is affected by changes in the independent variable.

Front

Can there be more than one independent variable in a controlled experiment?

Back

No, there should only be one independent variable in a controlled experiment to ensure accurate results.

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 due to the independent variable.

Front

Why is it important to repeat scientific experiments?

Back

Repeating experiments allows scientists to collect enough data to form a strong conclusion and verify the results.

Front

In the experiment about paper airplanes, what is the independent variable?

Back

The wing shape of the paper airplane.

Front

In the experiment about studying with TV, what is the dependent variable?

Back

The student's test grades.

Front

What does it mean to control variables in an experiment?

Back

Controlling variables means keeping certain factors constant to ensure that the results are due to the independent variable.

Front

What is the purpose of an experiment?

Back

The purpose of an experiment is to test a hypothesis by manipulating variables and observing the outcomes.

Front

What is a hypothesis?

Back

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