Floating
Egg
Needed:
- Two glasses
- Salt
- Two eggs
Experiment 1:
Mix plenty of salt (about 10 heaping teaspoons) into half
a glass of water. Fill the second glass half full of fresh water.
Try floating an egg in each glass. You will find that the egg
will float in the salt water because it is less dense than salt
water. But the egg will sink in the fresh water because it is
more dense than fresh water.
Experiment
2:
Fill one glass half full of fresh water and one half full of
very salty water, as before. Then, very carefully, pour the
fresh water into the salt water. Don't let the liquids mix.
Gently lower the egg into the water. It should float on the
salt water and look as if it is suspended in the middle of
the glass.
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