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Get an egg into a bottle
Instructions
1. Drop a lit piece of paper into the bottom of the glass bottle. ****Careful, use adult help**** 2. Quickly place the boiled egg onto the bottle opening. 3. What happens? How does it work? 4. You can do the same experiment with a water balloon filled with water. Which works better?
You will need:
- 1 Peeled Hard-boiled Egg or a greased water balloon - 1 Glass Bottle with a neck slightly more narrow than the egg - Matches and paper
The lit paper heated the air inside the jar. Hot air expands, so some of the air 'escaped' the bottle'.
When the flames went out, the air cooled... cold air contracts. As the cooling air contracted, the pressure inside the bottle became lower than the outside the bottle. The greater pressure outside the bottle PUSHED the egg into the bottle. Air pressure is the force of molecules of air pushing against things. It affects everything from just taking a breath to how clouds form in the sky. For more on air pressure check out the NASA site on air pressure |
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