Independent and Dependent Variables

Front

The variable that is measured.

Back

Dependent Variable

Front

The one factor that a scientist changes during an experiment.

Back

Independent 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

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

Back

independent; dependent

Front

What is the independent variable in Ben's experiment with paper helicopters?

Options: Dropping the same way, Wing Length, Amount of time it takes the helicopter to hit the floor, Dropping from the same height

Back

Wing Length

Front

What is the dependent variable when Ben drops paper helicopters with different wing lengths from a height of two meters?

Back

Amount of time it takes the helicopter to hit the floor

Front

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.

What is the independent variable?

Back

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

Front

Cindy's experiment on how sunlight affects plant growth. What is the dependent variable?

Back

The growth of the plant

Front

What type of variable is the fertilizer when experimenting with the growth of a plant using three (of the same type of) plants, two different fertilizers, equal light, and equal water?

Back

Independent