Fighting the Germs! (page 2)

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Author: Dana T.


We know that some viruses and bacteria can live 2 hours or longer on surfaces like cafeteria tables, doorknobs, and desks. Even touching a doorknob , and then exposing that to your mouth or eyes can spread your illness to the person who opens the door after you. Contact with these substances counts as 80% of all of infectious diseases. Germs are spread when we touch something that has been frequently touched by other people. Cold viruses and stomach flu can be transmitted by touching an object that someone has recently touched. Door handles, exercise equipment, counter tops are examples of inanimate objects on which germs exist.

How to stop spreading? Cough or sneeze into a tissue and then throw it away. Cover your cough or sneeze if you do not have a tissue. Then, clean your hands, and do so every time you cough or sneeze.

Terms and Concepts for Background Research

  • What are bacteria?
  • Stop the Spread of Germs
  • Prevent the Spread of Germs
  • Diseases Spread
  • Measuring Bacteria

Researched Questions

  • How are diseases spread?
  • What types of germs are there?
  • Where are germs found?
  • What’s commonly spread?
  • What effect does the spreading cause?
  • How do we stop the spreading of germs?

Experimental Procedure

1. Number agar plate lids- so you know where the bacteria came from.

2. Set up materials


As I stated in my hypothesis, I believed that having copper on everyday surfaces would have the spreading of disease will decrease. The results show that the sanitizing wipe & the copper had similar outcomes. The sanitizing wipe decreased 9 bacteria colonies from the pencil, and 21 germs on the laptop, while the copper decreased 7 bacteria colonies on the pencil, and 16 on the laptop. This means that S.W. or Copper are both great method for preventing disease. As for the onion, it did so badly that it came to the point where it was adding bacteria to the surface. In one case, the result found that the onion added 3 more colonies than the control.


Overall, the sanitizing wipe & the copper did equally well. So maybe the new look of the future would be having self sanitizing laptops, self cleaning tabletops, having copper pencils, copper counters, copper knobs , and copper everything! But until then, sanitizing your hands and the surfaces you touch are the best way to prevent the spreading of germs and disease.

Questions for further Research

If I were to continue in my experiment, I would take the process of turning from a scientist, to the engineer. I would want to try to build self cleaning machines and copper materials that do not have the metal scent afterwards. If I could take my research and turn it to something the whole world can use, then we can make a dramatic difference in the amount of people who have disease or illness.



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