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A comparison on the contamination of wet and dry foodFeatured science projectScience project video

Conclusion

The experimental data and analyzed results support the hypothesis that cucumbers (wet food) are more prone to contamination by germs.

It is important to maintain our personal hygiene and the cleanliness of our environment at all times in order to protect ourselves from harmful germs. We must always practice good habits such as washing our hands before touching food, and bathing everyday to minimize contact with germs and to lead a healthy life.

 

Also consider

This science fair project can be repeated in other locations such as the school, parks etc.
Try to repeat the experiment using other types of food such as jelly, apples and candies.
 

References

What are germs? - http://kidshealth.org/parent/general/sick/germs.html#

Germs, they are everywhere - http://www.webmd.com/parenting/news/20040623/germs-theyre-everywhere
 

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Complexity level:
6
Project cost ($):
20
Time required:
Preparation will require one day, while observation and recording of data will be carried out over a period of three days
Material availability:
Access to laboratory equipment (eg. petri dishes)
Safety concerns:

Always follow laboratory safety guidelines and always practice sterile technique when handling microbes. Never have any food or drink at your workstation and always thoroughly wash your hands with disinfectant soap or alcohol before leaving your workstation. Always dispose of used material in a biohazard bag. If none are available, the bacteria should be destroyed with bleach before being disposed of. Proper safety measures must be followed when handling the knife.