For this EGG-ceptional Air Pressure EGG-sperament, you are only in need of four things. This one must be done by an adult, but your children on-lookers are going to love it!
You Will Need:
- a piece of paper
- a book or box of matches (a lighter will also work)
- a glass bottle (I used a Starbucks frappacino bottle from a variety store. These are the perfect size: the mouth of the bottle is small enough that the egg will sit on top, but it's big enough that when the egg gets sucked into the bottle, it won't break. This looks even more impressive to young viewers).
- A whole, hard boiled, peeled egg.
Method:
- Tear a strip off of the paper and twist it (as seen in the picture above), so that it can fit into the bottle easily.
- light one end of the paper on fire, and drop the paper into the bottle.
- Immediately place the egg on top of the bottle, so that it sits vertically on the opening. (let go of the egg).
What is Happening:
When the bottle is sitting empty on the desk, the air pressure inside and outside of the bottle are the same. Once you place the flame inside the bottle, the heat forces the air pressure to grow inside the bottle only. As soon as the fire goes out, the air cools, and the air pressure contracts again, sucking the egg into the bottle as it does.
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