Types of Variables

What are the three main types of variables discussed in most science experiments?

• Manipulated, Responding, Constant

• Independent, Dependent, Control

• Input, Output, Fixed

• Primary, Secondary, Tertiary

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Which term describes the variable that is changed or manipulated by the experimenter?

• Dependent variable

• Responding variable

• Independent variable

• Control variable

On which axis is the dependent variable typically graphed?

• X-axis

• Y-axis

• Z-axis

• Both X and Y axes

What is the primary purpose of control variables in an experiment?

• To be changed by the experimenter.

• To measure the results of the experiment.

• To remain constant for accurate results.

• To represent the outcome of the experiment.

In an experiment testing if higher air pressure in car tires increases gas mileage, what would be the independent variable?

• The type of car used.

• The miles per gallon achieved.

• The air pressure in the tires.

• The distance driven.