Similarly, water can be supercooled and will not turn to ice while it is moving. Running water in northern streams in wintertime is a perfect example.
i had a friend wh9o worked in an ice-making plant in DC many years agol He said that they cooled water in big vats with paddles roiling the water, and when the paddles were removed the ice formed instantly with a big thump. The vats were square but had tapered sides so the ice would have a place to go when it expanded.
Also, something interesting. Water, like most solids and liquids, tends to shrink in size (up to a point.) And that point is 4 degrees Celcius. If you cool water below that down toward zero C, which is the freezing point, it actually expands slightly in volume.
This is why definitions for volume/weight based on water specify that the water be at 4 Celsius. That way all scientists have the same amount of water in a given volume when doing experiments.
