Scientific Variables

Fedor and Zoey are testing different types of paper airplanes to see which one goes the furthest. What would the independent variable be in their experiment?

• the type of paper used.

• the distance each plane flies.

• how hard the plane is thrown.

• the type of paper airplane.

Jahel and Denzel are conducting an experiment to see how different amounts of sunlight affect plant growth. The variables in their experiment that stay the same are the -

• Independent Variable

• Dependent Variable

• Constants

• Control

Jahel 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

Adriana is planning an experiment to find out how the height from which she 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

Zoey and Mason 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

Adriana and Ethan are conducting an experiment to see how different amounts of sunlight affect the growth of plants. Which variable depends on (responds to) the amount of sunlight given to the plants at the beginning of the experiment?

• Dependent

• Independent

• Control

• Extraneous

In a science fair project, Brook-Lynn and Jadiel are testing the effect of different fertilizers on plant growth. They keep one plant without any fertilizer to see how it grows naturally. This part of the experiment serves as a basis of comparison.

• experimental group

• control group

• constant variables

• extraneous variables

Tags

NGSS.MS-ETS1-2

Adriana 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