Today is the kick off for the A to Z Blog Challenge!
Odds are you already know this classic experiment, but if you’re anything like me, you don’t know why it works the way it does. It all has to do with air pressure.
What you need:
- A bottle with a fairly wide mouth (not wide enough to fit an egg through)
- A peeled hard-boiled egg
- A strip of paper
- A match
- Light up the strip of paper and put it in the bottle.
- Put the egg on top of the bottle.
- Watch the egg get sucked into the bottle!
- So, how does it work? The burning paper will heat the air inside the bottle causing the air inside to expand. The egg on top of the bottle seals it, cutting off the oxygen and putting out the flame. When the fire goes out, the air will cool and contract. The air pressure in the bottle is now less than the pressure outside the bottle. The extra outside air pressure pushes the egg into the bottle.
I thought my video of this was pretty awesome… but I think I will be doing how to download to YouTube for Y if ya get my drift….
If you want a video, here’s a guy who knows about air pressure AND YouTube!