Science experiments for children – Egg in a bottle. For this experiment are used: a boiled egg cooled and peeled, a transparent bottle of glass or plastic with the mouth slightly smaller than the diameter of the egg, a piece of paper, lighter or matches.
Science experiments for children – Egg in a bottle
What to do?
Set fire to a piece of paper and throw it into the bottle, then place the egg at the mouth of the bottle so that the egg seals it: the egg will be sucked inside.
http://www.kids-cooking-activities.com/
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Science experiments for children – Egg in a bottle
What happens?
The heat of the flame expands the air, so the pressure inside the bottle becomes greater than the external.
When the air inside the bottle cools back to contract, then we will have inside the bottle an amount of air less than that which existed at the beginning, in other words the pressure inside the bottle will be less than to the external pressure, and the external pressure will push the egg down.
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Science experiments for children – Egg in a bottle
Video
Science experiments for children – Egg in a bottle
Other links
http://www.kids-cooking-activities.com/egg-in-a-bottle-experiment.html
http://www.thenakedscientists.com/HTML/experiments/exp/sucking-an-egg-into-a-bottle/
http://weirdsciencekids.com/egginbottle.html
http://www.weatherwizkids.com/experiments-egg-bottle.htm
http://www.hometrainingtools.com/a/egg-in-bottle-project
