Science Experiments

Question: Help needed in the field of science?

this is my science project: can air pressure alone force an egg to be pushed inside a bottle? here is where my problem is- it needs to be a controlled experiment! any ideas? (and it has to be at an eighth grade level, not too hard but not too easy as in I didn’t try).. if i can’t make this a controlled experiment, are there any other experiments I can do? Please answer ASAP! Greatly appreciated!
i know how to do the project and all, I just need to compare it with something–> it needs to be a controlled experiment and not just a demonstration
PLEASE ANSWER!! I need help

Answer: yes this can be done you need a glass milk bottle one candle and a boiled egg.1 boil egg let it cool then peel egg 2.place candle in bottle using blue tac.3.once you get the candle in the bottle light candle place peeled egg on top when the the flame of the candle burns up all the oxygen in the bottle.it then will create a vacuum pulling the egg into the bottle.

Simple Air Pressure Experiment