How do you get a whole egg into a bottle? Using the science of air pressure, of course!
Materials:
– hard boiled egg (must be just slightly bigger than the opening of the bottle)
– clean and empty glass jar with an opening about 1.5-2″
– paper or paper towel
– matches
Instructions:
Place crumbled paper or paper towel pieces in the bottom of the jar.
An adult lights a match and drops it into the bottle; quickly cover the mouth of the bottle with the egg.
The fire in the bottle will go out, and the egg will be pushed into the bottle.
HOW DOES IT WORK?
The burning paper heats the molecules of air in the bottle (increasing their energy) and the molecules move farther away from each other. When the flame goes out (because the egg is blocking its source of oxygen), the molecules of air in the bottle cool down and move closer together, making room for new air molecules. This creates a partial vacuum. Normally, air from outside the bottle would flow to that area to fill that vacuum, but the egg is blocking the path for air to enter the bottle. The pressure of the air molecules outside the bottle is greater than the pressure inside the bottle and it pushes the egg into the bottle.
