3rd Grade Science Project - Atmospheric Pressure (Egg in Bottle)
My daughter's science project was due today. We spent all last night finishing up the project that we waited til the last minute to do because
So in a nutshell, when you place a lit paper into the bottle, the air inside heated up and expanded. When the flame died, the air inside the bottle cooled and contracted resulting in less air pressure inside the bottle than atmospheric pressure outside. The atmospheric pressure pushed the egg inside the bottle.
To get the egg out, you simply place the egg near the whole and blow into into as hard as you can. This causes the air pressure inside the egg to be greater than atmospheric pressure and the egg is pushed out.
It was a pretty fun experiment and mighty popular. I found many different versions of this on utube.
Where do you buy milk bottles these days?
So in a nutshell, when you place a lit paper into the bottle, the air inside heated up and expanded. When the flame died, the air inside the bottle cooled and contracted resulting in less air pressure inside the bottle than atmospheric pressure outside. The atmospheric pressure pushed the egg inside the bottle.
To get the egg out, you simply place the egg near the whole and blow into into as hard as you can. This causes the air pressure inside the egg to be greater than atmospheric pressure and the egg is pushed out.
It was a pretty fun experiment and mighty popular. I found many different versions of this on utube.
posted at
10:57 AM
3 Comments:
you can buy milk that comes in a bottle at a natural foods store. whole foods has it here in boulder.
at 9:51 AM
I did that when I was a kid. I couldn't get the ashes off the egg though and it seemed a shame to waste an otherwise good egg....
at 7:45 PM
I found my old milk bottles at antique stores. I paid between $10 and $15 each for them.
at 8:49 PM
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