Exploring Independent and Dependent Variables

The video tutorial explains the three main types of variables in science experiments: independent, dependent, and control variables. The independent variable is the one that is changed or manipulated, found on the x-axis. The dependent variable is what is measured, found on the y-axis. Control variables remain constant to ensure accurate results. An example is provided using car tire pressure to illustrate these concepts. The tutorial concludes with a summary of the roles of each variable type.

What type of variable is manipulated by the experimenter?

• Control variable

• Constant variable

• Dependent variable

• Independent variable

Where is the independent variable typically plotted in a graph?

• Y-axis

• X-axis

• Z-axis

• None of the axes

What does the dependent variable depend on?

• Both independent and control variables

• None

• Independent variable

• Control variables

In the provided example, what is the independent variable?

• Driving speed

• Car type

• Miles per gallon

• Air pressure in tires

What is the role of control variables in an experiment?

• To keep other variables constant

• To prove the hypothesis

• To be measured

• To be manipulated

Which variable is measured in the experiment example?

• Miles per gallon

• Air pressure

• Type of car

• Tire durability

What summarizes the role of the independent variable?

• It depends on the control variables

• It remains constant

• It is measured based on changes

• It is what is being changed

What message does the video end with?

• Always check your data

• Kindness multiplies kindness

• Review your experiments

• Variables are crucial