Identifying Experimental Variables & Groups

The independent variable is the ONE thing you _____.

• change
• keep the same
• experiment with
• investigate

Tags

NGSS.MS-PS2-2

The variable that you measure is the -

• Independent

• Dependent

• Constant/controlled

• Repeated Trial

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

How many variables can be tested in a controlled experiment?

• one
• two
• three
• as many as possible

Which of the following is used to compare all your data to? (Tells you that your data is correct)

• Independent variable

• Dependent variable

• Experimental group

• Control group

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. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the independent variable?

• Type of plant
• Water, apple juice, milk
• Plant growth

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Mr. S normally uses praise as a reward to train his dog. He wants to know the best way to train his dog, so he sets up an experiment to find out if there is a better way to get his dog to respond to commands. What is his dependent variable?

• Type of reward
• Praise
• Type of dog
• Amount of time the dog follows commands

Mr. S. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.  Identify the constant.

• distance traveled by the ball
• height of the ramp
• mass of the ball
• weight of the ball

Tiffany was investing how fast it took Hayden to react to different sounds. Identify the dependent variable. 

• different sounds
• how much time it took Hayden to react
• Hayden
• the trumpet playing over and over

Tags

NGSS.MS-LS1-8

Mario studied how far room temperature water would spurt out of a plastic milk carton when 3mm holes were punched at different heights from the bottom of the container. Identify the dependent variable

• 3 mm holes

• distance water traveled out of carton

• different heights of holes in container

• ice water from Iceland

What would the INDEPENDENT variable be in an experiment testing which types of paper airplane goes furthest?

• the paper used
• the type of paper airplane
• the distance of each plane's flight
• how hard the plane is thrown