Independent and Dependent Variables

Front

The one factor that a scientist changes during an experiment.

Back

Independent Variable

Front

The variable that is measured.

Back

Dependent Variable

Front

The factors that stay the same or are constant throughout the experiment.

Back

Controlled Variable

Front

In a controlled experiment, how many independent variables can be tested at a time?

Back

one

Front

Why is it important to have only one independent variable and to control the other variables when performing science experiments?

Back

So you can tell which factor is causing the change in the experiment.

Front

Changes in the _________ variable causes changes in the _________ variable.

Back

independent; dependent

Front

The height of a bean plant depends on the amount of water it receives. What is the independent variable? (the factor that is changed)

Back

The amount of water

Front

A study was done to find if different tire treads affect the braking distance of a car. What is the dependent variable? (the factor being measured)

Back

The braking distance

Front

Cindy's experiment on plant growth: What is the independent variable?

Back

One plant is in the sunlight and the other is under a box

Front

Cindy's experiment: How does sunlight affect plant growth? She used two tomato plants, same pot size, same soil, watered ¼ cup daily. One plant in sunlight, one under a box. Measured growth weekly for 3 weeks. What is the dependent variable?

Back

The growth of the plant