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The "egg in the bottle" experiment is the source of discussion.
Light the match and use it to ignite the folded strip of paper. Remove the egg from the mouth of the bottle and drop the burning strip of paper into the bottle. Before the fire goes out, set the egg back onto the mouth of the bottle. Within a few seconds the egg will squeeze through the mouth and into the bottle.
As it entered the bottle, the egg may have broken into pieces. This happens when the diameter of the egg is more than about 0.5 cm (about 3/16 inch) larger than the diameter of the bottle's opening. A medium or small egg may be small enough to enter the bottle without breaking. Also, rubbing some cooking oil onto the mouth of the bottle will make it easier for the egg to slide into the bottle without breaking.
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The science projects & ideas are especially designed to be useful for both Students, Teachers and the entire Family. It helps to develop an interest and understanding in knowing about the scientific laws & principles that constitute our world.
To demonstrate the effect of air pressure by putting a hard-boiled egg into a bottle and getting it out intact. Remove the shell of the hard-boiled egg. Drop a burning match into the bottle just before you put the egg on the mouth. The flame burns up the oxygen, thus creating a vacuum that sucks the egg into the bottle. Then turn the bottle upside down so the egg falls into the neck and blow air into the inverted bottle and the egg will pop out.
Egg in a bottle science fair project hypothesis
• a hard-boiled egg
a glass bottle with a mouth just slightly smaller than the egg (a fruit-drink bottle works well)
• a 8-cm by 8-cm (3-inch by 3-inch) piece of newspaper
Why does the egg slide into the bottle, even though no one is pushing it? Because the pressure of the air is pushing it. Before the burning paper was put into the bottle, the pressure of the air inside the bottle was the same as outside the bottle. The burning paper, however, heats the air inside the bottle. This causes the air inside to expand. When the egg is placed on top of the bottle, it seals the bottle, and the fire eventually goes out. When the fire goes out, the air inside the bottle cools. As it cools, the air contracts, and the pressure of the air inside the bottle becomes less than the pressure outside. Then, the higher outside pressure pushes the egg into the bottle!
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Egg in Bottle Science Fair Project
For moreinformation on the egg in the bottle experiment (and other neat thingsyou can do with eggs), including a cool trick for how to get the eggback out of the bottle again, check out this link to .
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