All Science Fair Projects

Over 1000 FREE Science Fair Project Ideas!

Do spices in cooking kill microorganisms?
People in equador regions use spices in food preparation for thousands of generations. By using these spices, are they keeping themselves healthy by keeping their food "clean?" My objective is to find out if spices have the ability to kill food-spoilage microorganisms. And if they do, which spices are most effective and by how much?
Difficulty: Middle school
Does bacteria become more resistant to an antibiotic when exposed repeatedly to it?
While antibiotics are very powerful in the cure of many bacterial diseases, some bacteria have developed ways to resist antibiotics. The extensive use of antibiotics (unfortunately including the over-prescription and misuse of these medications) has resulted in the evolution of bacteria that are not be killed by antibiotics and these bacteria once again threaten health and life. Diseases that were
Difficulty: High school
Does bacteria content increase in a water bottle when the bottle is not properly washed.
My purpose is to show that the bacteria content does increase in a water bottle when it is not properly washed between uses. In the summer during swim team, I see my teammates fill the same water bottle every day for the whole season. They do not wash the water bottles as evidenced by the lip-gloss colors that don’t go away. The water bottles are stored in their swim bags with moldy dirty towel
Difficulty: High school
Does bacteria obtained from the feet of humans, rabbits or chickens grow the fastest?
I tested my hypothesis by taking samples of bacteria from the feet of a chicken, a human, and a rabbit, placing them in augers, and recording their growth over three days. I used a culture mix, water, a stove, a pot, nine petri dishes, graph paper, and samples of bacteria in my project. The full procedure went like this. I first mixed the water and the culture mix, then boiled it, and added some t
Difficulty: Elementary school
Does dog saliva kill bacteria effectively?
This project examines how effective dog saliva is against bacteria.
Difficulty: Elementary school
Examining luminous bacteria
Biologists do not yet know why these bacteria produce light. One idea is that producing light gives these bacteria an advantage for survival. By glowing, they attract fish, which they then use as a host organism — the bacteria are able to live in the fish's body. These fish, which are attracted to the bacteria's light, pick up the bacteria and prevent them from settling on the bottom of the ocean
Difficulty: Elementary school
Examining the effect of acidity and alkalinity on bacteria growth inhibition
The objective of this science fair projectis to investigate the effect of acidity and alkalinity on bacterial growth. This will be determined through the use of different concentrations of hydrochloric acid and sodium hydroxide, and measuring the size of the respective inhibition zones in samples of E. coli bacteria.
Difficulty: Middle school
Extreme temperatures and its effect on the growth of bacteria
The purpose of this experiment is to investigate if extreme temperatures kill bacteria more effectively, especially so if the bacteria is exposed to extremely high temperatures (as opposed to extremely low temperatures).
Difficulty: High school
How dirty are your dental retainers?
Should you brush your retainers with toothpaste? Will it suffice to rinse them with mouthwash? This science fair project aims to investigate the methods available for minimizing the amount of bacteria found on dental retainers. This experiment is carried out by comparing the amount of bacteria found on dental retainers that have been subject to infrequent brushing, regular brushing with toothpas
Difficulty: High school
How do electric fields affect E.coli bacteria?
With the result that application of an electric field apparently halted bacterial cell division and led to filamentous growth, we sought to understand better the cause of this phenomenon. (Recall that filamentous growth occurs when cell division—but not cell growth—is inhibited.)
Difficulty: High school
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