Re: ??? for old

Posted by MarkB_MI on December 30, 2006 at 16:51:15 from (216.234.120.241):

In Reply to: ??? for old posted by Sid on December 30, 2006 at 10:45:28:

The salt content lowers the freezing point of the ocean a bunch, but the main reason the oceans don't freeze at depth is that water has a very unique characteristic: Water is just about the only substance that expands when it freezes. If the oceans were filled with any liquid other than water, they would freeze from the bottom up. Because water has to expand to freeze, the pressure at depth prevents freezing.

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