Petri Germs

Clare Worley 6S
4 - 16 - 18

What Surface in OLV has the most Germs?

Introduction I have tested several surfaces in Our Lady of Victory to see which surface has the most germs. I tested ten surfaces and let the petri dishes grow for five days. Over the five days I counted the spores each day and took pictures every other day. It is amazing how things can look and feel clean but they are actually filthy. It is also crazy how many surfaces we touch every day and how one thing we touch can make us sick. Overall, I learned many things about growing bacteria.

Hypothesis
I think the computer lab keyboard will have the most germs. I think that because it is the hardest to clean and many kids touch it.
Materials and
The toilet handle had the biggest spores and took up the most space in the petri dish. The main door handle did not have any spores at all.

Analysis
This experiment relates to a real world problem because we touch these surfaces every day. I never realized how dirty these surfaces were when I was touching them. This experiment could help us because it can help prevent illnesses and infections before they