As far as science projects go, this little science experiment is great fun to do. Imagine getting a hard boiled egg into a bottle with a mouth that is actually smaller than the egg. It demonstrates a number of  science principles at work. The utilization of oxygen to burn a match, the creation of depression due to air pressure being the two most noteworthy.

Here is what you need. A hard boiled egg, which has been shelled. A bottle with a mouth that is marginally smaller than the diameter of the hard boiled egg. And a box of matches. You are set to go.  Just make sure that you have an adult around to help you with the matches.

What is to be done is really simple. You light a match and throw it into the bottle. Then immediately cover the opening of the bottle with the hard boiled egg. As the match uses up the oxygen present inside the bottle it will eventually suck down the egg into the bottle due to the difference created in air pressure inside the bottle and outside.

Now if you are looking for more science experiments involving air pressure you may enjoy these.