At 10:16 PM 3/16/2007, BA wrote...
>You dis-remember the physics, but not by much.  Ice floats with 10% of
>itself above the level of water.  Therefore 10% of the volume of ice
>will contribute to raising the level of water.

HAW! HAW! Disremember, yourself. Water expands when it freezes, making
it less dense. The amount by which it expands (about 9.3% during the
phase change) is exactly the amount above water when it floats.
Floating ice which melts does not change the water level. Try the grade
school experiment using ice cubes in a glass if you think otherwise.

Because water expands when it freezes, it's important to use antifreeze
in a WC Vanagon, else you risk breaking things when the weather gets
cold.