Super Star Scientist

Macey!

Scientist Macey was ready to go with our last Super Star Scientist experiment of the school year!  She had her goggles and lab coat on and was ready with all her materials:  hard boiled eggs, small necked jar, and hot water.

Experiment:  The Egg in the Bottle

Objective:  Can an egg go into a bottle that has a small hole without mashing the egg?

First, Macey's  assistant, Mom, put very hot water into the bottle...

…and Macey shook it to make the bottle hot and then poured the water out.

Next, Macey placed the egg over the hole at the top of the jar.

We waited and watched as the steam pulled on the egg…

…and after a short time, the egg dropped down into the bottle!

We tried the experiment a second time in a different location so we could have hotter water to see if it would pull the egg down faster…

Macey shook the hot water in the bottle,

poured the water out,

placed the egg on top, 

and we waited,

and watched…

…and it dropped safely down into the bottle!

Conclusion:

The hot water leaves steam in the bottle which forces out some air. When the steam cools, the droplets of water need less space.  The air pressure in the bottle is reduced and the pressure of outside air pushes the egg inside the bottle.