Quote:
Originally Posted by Degrees
Well, when ice freezes, it expands. If the outside ring on ice were to freeze first, then when the inner core froze, I could see it being forced to push up instead of out.
I'm guessing those are pretty light rocks, though. If they were heavy at all, the expansion would fracture the outside ring, and no lift would happen at all.
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This sounds reasonable to me.
I have seen ice cubes in the ice tray in the freezer with little spikes in the center of the the cube sticking up like the tops of Hershey kisses.
No rocks though.
Not just me, apparently.