Science Fair project questions. Good project idea? If so, what is my Independent Variable?
Posted: Mon Jan 23, 2023 1:09 pm
Do you think this is a good idea for a Science Fair project?
"Which has more bacteria on it in restaurants; menus or the entrance handle to the bathroom?"
Our controls would be swabbing a brand new (right out of the box) handle, and a new printed menu.
The dependent variables would be four samples swabbed from menus and bathroom handles at four different restaurants.
Another question is what is my independent variable supposed to be? The judge's form states, "Did the student have one and only one independent variable?" Would my independent variable be the different restaurants? Or is it the actual swabbing and testing in the same Petri dishes (Agar plates)?
Thanks so much!
Heidi
"Which has more bacteria on it in restaurants; menus or the entrance handle to the bathroom?"
Our controls would be swabbing a brand new (right out of the box) handle, and a new printed menu.
The dependent variables would be four samples swabbed from menus and bathroom handles at four different restaurants.
Another question is what is my independent variable supposed to be? The judge's form states, "Did the student have one and only one independent variable?" Would my independent variable be the different restaurants? Or is it the actual swabbing and testing in the same Petri dishes (Agar plates)?
Thanks so much!
Heidi