Science Buddies: "Ask an Expert"

I'm doing a science fair through my school and were only allowed to have one variable. What would the best variable be?

Thank You!

Hello JAEPedone and welcome to Science Buddies,

I assume you are working on this project:

https://www.sciencebuddies.org/science- ... th#summary

I think that you will be able to answer your own question by reading about variables in the "Constructing a Hypothesis" in this Science Buddies project guide:

https://www.sciencebuddies.org/science- ... ience-fair
While you are reading that section, go back and forth to the procedures in the project description. Think about the observations you are being asked to record, and the experimental conditions you will be using for each section of the project.

Let us know if this helps and tell us what you decide!