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. It depends on the independent variable.

Front

In the experiment, if the number of hours studied (h) affects test scores (s), what is the independent variable?

Back

The number of hours studied (h) is the independent variable.

Front

In the experiment, if the amount of water given to plants (w) affects their growth (g), what is the dependent variable?

Back

The growth of the plants (g) is the dependent variable.

Front

If the temperature (t) of water affects how quickly sugar dissolves (d), what is the independent variable?

Back

The temperature of the water (t) is the independent variable.

Front

If the number of cookies baked (c) depends on the amount of flour used (f), what is the dependent variable?

Back

The number of cookies baked (c) is the dependent variable.

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, if the amount of sunlight (s) affects the height of a plant (h), what is the independent variable?

Back

The amount of sunlight (s) is the independent variable.

Front

In an experiment, if the speed of a car (s) affects the distance it travels (d), what is the dependent variable?

Back

The distance the car travels (d) is the dependent variable.

Front

What is a controlled variable?

Back

A controlled variable is a factor that is kept constant to ensure that the results of an experiment are valid.