Science Variables

Front

What is a controlled variable?

Back

A controlled variable is a factor in an experiment that is kept constant to ensure that the results are valid. For example, the location of the farm in a potato growth experiment.

Front

What is a dependent variable?

Back

The dependent variable is what you measure or observe in an experiment. It responds to changes in the independent variable.

Front

Identify the dependent variable in an experiment measuring how fast different liquids drain out of a tornado tube.

Back

The speed at which the liquid drains out.

Front

What is an independent variable?

Back

The independent variable is the factor that is changed or manipulated in an experiment. For example, the amount of fertilizer used in a grass growth experiment.

Front

Identify the dependent variable when measuring water temperature at different depths.

Back

The temperature of the water.

Front

What is an independent variable in an experiment?

Back

The 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 constant variable?

Back

A constant variable is a factor that remains the same throughout an experiment to ensure that the test is fair.

Front

What is the purpose of a controlled variable?

Back

The purpose of a controlled variable is to eliminate alternative explanations for the results of an experiment.

Front

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

Back

The amount of sunlight.

Front

In an experiment measuring the effect of temperature on the rate of a chemical reaction, what is the dependent variable?

Back

The rate of the chemical reaction.