Experimental Design

The type of variable that you change or manipulate in an experiment.  It is what you are testing.

• Independent
• Dependent
• Control

The type of variable that responds to the experiment and is what you measure to determine if your hypothesis is true.

• Independent
• Dependent
• Control

The parts of the experiment that must be kept the same.

• Constants
• independent
• Dependent

Tags

NGSS.MS-PS3-4

How many variables should you change in an experiment?

• none
• only 1

• 2 or more
• depends on the type of experiment

Tags

NGSS.MS-PS2-2

NGSS.MS-ETS1-4

Dory 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?

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

Tags

NGSS.MS-PS2-2

What are the number of times each level of the independent variable is tested?

• constants

• control

• trials

• dependent variable

The vertical axis of a line graph is called the __________.

• slope

• line of best fit

• x-axis

• y-axis

Tags

NGSS.MS-PS3-1

The horizontal axis of a line graph is called the __________.

• slope

• line of best fit

• x-axis

• y-axis

Tags

NGSS.MS-PS3-1

Thomas tests different types of liquids to see which will grow his plants the most. He has water, soda, milk, and no liquid at all. What is the control group?

• the one with water

• the one with soda

• the one with milk

• the one with no liquid

Three baseball players investigate to see who can throw a baseball the farthest. They mark off an area on the playground for their investigation. Which should they keep constant?

• height of the players
• color of the balls thrown
• order in which the players throw
• spot from which the players throw

Tags

NGSS.MS-PS2-2