Independent and Dependent Variables

The variable that is measured throughout the experiment is

• controlled Variable

• Independent Variable

• Responsive Variable

• Dependent Variable

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice or milk. In this investigation, the independent variable is...

• The type of liquid

• the amount of sunlight

• the type of plant

• the type of music

Students took a test after they had studied either in silence or with the television turned on. What is the dependent variable?

• television turned on

• subject

• silence

• score on the test

Mrs. Trypus set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

• mass of the ball

• height of the ramp

• where the experiment took place

• distance the ball traveled

What would the independent variable be in an experiment testing which paper airplane design goes furthest?

• the distance of each plane's flight

• the paper airplane design

• how hard the plane is thrown

• the paper used

Catherine is testing which soil will help grass grow the tallest. The height of the grown grass is the __________ variable.

• independent (its what you change)

• constant (stays the same)

• dependent (it's what you measure)

Jonathan set up the same experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

• mass of the ball

• distance traveled by the ball

• height of the ramp

• who set up the experiment

When experimenting with plants to see if they grow better with of without fertilizer, a scientist uses six bean plants and one type of fertilizer. What type of variable is the fertilizer?

• independent

• control

• dependent

• compound

The independent variable is the ONE thing you _________ test your hypothesis.

• keep the same

• experiment with

• change

• investigate

Daniel was investigating how fast it took mice to react to different sounds. Identify the independent variable.

• Daniel

• types of music

• different sounds

• how fast mice reacted