Sep 22, 2005
Science Fair Projects – Egg in a Bottle
The University of Illinois provides visitors to its website with various science fair projects, including the perennial favourite – “Can air pressure alone cause an egg to be pushed into a bottle?”. Of course, it can. To make it work you’ll need an egg, a bottle, and a couple of matches. It’s all to do with air pressure differences.
But, the procedure Illinois suggests students to follow begins with “Step 1 – Peel the shells off the eggs”.
Not until further down the page (below the fold in fact) does it mention a crucial preparatory step. Can you guess what it is? Or, would you end up with egg on your face, and all over your hands?
You can watch a video of this kind of egg in a bottle experiment here.

I am stongly thinking about do this project, but the only problem is my panter thinks it not good for a 7th grader to do.
okwell… i have like 2 weeks to do my science project and i have to do 30 note cards with facts and stuff, then i have to do a research paper, and intro, and a display board. please help me do this i have given this egg in a bottle a chance. can anyone like tell me what to do to get a good grade?
i really like this project this is ma second time doing this and I got a A+ on both of them and im proud…thankyou
@Brenda – did you boil your egg already? A bad egg boiled will float because of the production of hydrogen sulfide gas within. A fresh egg shouldn’t float, although there may be a build up of gas inside even a good egg. More info here
db
I want to know, if you put an egg in water will it float or will it sink?