Understanding Variables in Experiments

What is the independent variable (IV) in James's study on the effect of studying an extra 10 minutes each day on his Biology grade?

• Biology grade

• Time spent studying

• Type of study material

• Number of subjects

What is the independent variable (IV) in the scenario where Justin wants to determine which type of ball can be thrown the farthest?

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

In Randell's experiment to see if salinity affects his goldfish, what is the dependent variable (DV)?

• Type of goldfish

• Salinity level

• Size of the tank

• Health of the goldfish

In an experiment on the effect of pesticides on apple size, what is the dependent variable (DV)?

Tags

NGSS.MS-LS1-5

What is the independent variable (IV) in Billy's investigation on whether increasing exercise decreases the time to run a kilometer?

• Distance run

• Time to run a kilometer

• Amount of exercise

• Type of shoes

What is the independent variable (IV) in the experiment where you want to see the effect of the type of muffin liner on how high a cupcake rises?