Independent and Dependent Variables

Front

What is an independent variable?

Back

An independent variable is the variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is the variable that is measured and affected in an experiment, depending on the independent variable.

Front

In the experiment, if you change the amount of sunlight a plant receives, what is the independent variable?

Back

The amount of sunlight the plant receives.

Front

In the experiment, if you measure how tall a plant grows based on the amount of water it receives, what is the dependent variable?

Back

The height of the plant.

Front

True or False: The independent variable is what you measure in an experiment.

Back

False. The independent variable is what you change; the dependent variable is what you measure.

Front

If you are testing how different fertilizers affect plant growth, what is the independent variable?

Back

The type of fertilizer used.

Front

If you are studying how the number of hours studied affects test scores, what is the dependent variable?

Back

The test scores.

Front

What is the relationship between independent and dependent variables?

Back

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

Front

In a study about how temperature affects the solubility of sugar in water, what is the independent variable?

Back

The temperature of the water.

Front

In an experiment measuring how different amounts of exercise affect heart rate, what is the independent variable?

Back

The amount of exercise.