Our final step is to put each egg in a glass, but before we do that, make a hypothesis about which egg you think will float and which egg you think will sink! After carefully putting both eggs in ...

making the egg float, but without the salt, the egg needs something else to increase its buoyancy: air. But how does air get inside of the shell? Under a magnifying glass, you can see that the ...

Place the egg in a glass filled with water. Does the egg sink or float? After you see what happens, take the egg out of the glass and dump in a bunch of salt - a good ¼ of a cup will probably do ...

I learned that I needed three TABLESPOONS of salt to make things float. I mixed together a new concoction of saltwater in the glass and we tried again. When the girls put an egg in the fresh water ...