Scientific Variables

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

• the type of paper used.

• the distance each plane flies.

• how hard the plane is thrown.

• the type of paper airplane.

The variables in an experiment that stay the same are the -

• Independent Variable

• Dependent Variable

• Constants

• Control

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

Why do we want to test one variable at a time?

• Because it is hard to setup a data table with more
• To know what is causing the changes
• It is what has always been done
• No one really knows

Tags

NGSS.MS-ETS1-4

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

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

• Distance traveled by the ball
• Height of the ramp
• Mass of the ball

Tags

NGSS.MS-PS2-2

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

Which variable depends on (responds to) what is done at the beginning of an experiment?

• Dependent
• Independent
• Control
• Extraneous

This part of the experiment serves as a basis of comparison.

• experimental group
• control group
• constant variables

• extraneous variables

Tags

NGSS.MS-ETS1-2

Zion wanted to see if the type of fertilizer made sunflowers grow larger. What is the independent variable 

• Type of fertilizer
• Size of sunflower
• type of sun flower

Tags

NGSS.MS-LS1-5