Independent and Dependent Variables

What is an independent variable in a scientific experiment?

• The variable that changes under the influence of other variables.

• The variable that is measured as an outcome.

• The variable that is controlled throughout the experiment and not affected by other variables.

• The variable that is solely changed by the experimenter.

Why is time considered an independent variable in an experiment?

• Because it can be sped up or slowed down by the experimenter.

• Because it is the variable being tested.

• Because it is controlled and not affected by other variables.

• Because its duration can be changed.

What is a dependent variable in a scientific experiment?

• The variable that causes a change in another variable.

• The variable that is controlled by the experimenter.

• The variable being tested, which depends on other factors.

• The variable plotted on the X-axis.

How does an independent variable relate to a dependent variable?

• The independent variable is the effect, and the dependent variable is the cause.

• The independent variable is the cause, and the dependent variable is the effect.

• Both variables are controlled by the experimenter.

• Neither variable can be changed during an experiment.