On Wed, 10 Nov 2004 08:25:10 +1100, "K. Smith"
wrote:

dixon wrote:
A physics teacher once asked what would happen if water, when freezing into
ice, became smaller as it got colder like all other materials. At the time
it seemed simple, the ice wouldn't expand so no more cracked engine blocks
and manifolds. Also docks wouldn't be lifted in winter and boats could
probably be left in the water all winter. Other than that, not much change
right? The answer was surprising! What do you think?
Dixon




It only expands because as the water freezes it does so as lots of tiny
ice crystals, there is some space (small) between these crystals. Change
of state from a chemically homogeneous liquid (H2O) to a tightly packed
lump of solid (ice) crystals

So a kg of ice has a larger volume than a kg of liquid water, that's
why it floats.

Whenever water freezes the ice crystals no matter how tightly packed
have to take up more volume than the water did & oops the cast iron
engine block just can't accommodate a volume increase of say 5-10%.

That dumb uneducated lying idiot Krause has for years argued here that
a timber boat of the same weight as boat of any other materials, will
"float" higher in the water because... wait for it....wait....... wood
floats!!!:-)



K

Hey! Didn't you read about the truce? This is becoming a peaceful and
harmonious group. There are still a few who haven't gotten the word,
but they're working on it!

John H

On the 'PocoLoco' out of Deale, MD,
on the beautiful Chesapeake Bay!