When will the temperature drop below a few degrees and it will freeze?

The freezing point of water is 0 degrees Celsius.

Freezing, also called freezing, is a weather phenomenon. Open water freezes into ice. Meteorologically, water, including evaporating dishes, freezes.

In most parts of China, there is icing after beginning of winter. Winter means the end, which means that the crops should be harvested after harvest. In ancient China, people used to regard beginning of winter as the beginning of winter.

Beginning of winter has three stages: when water begins to freeze, that is, water can already form ice; The second waiting place began to freeze, that is, the land began to freeze; Three, pheasants into the water for cockroaches, pheasants, pheasants and other large birds; Slug is a big clam. After beginning of winter, there were few pheasants, but you can see big clams with similar lines and colors at the seaside. The ancients thought that pheasants would become giant clams after the arrival of early winter.

Extended data:

There is a term that refers to water whose temperature is below zero and does not freeze, which is called "supercooled water". The reason why supercooled water does not freeze is because it lacks condensation nuclei or other conditions, so it remains liquid below 0℃.

The principle that water does not freeze after zero degree is because liquid water needs an ice core to freeze-one crystal becomes an ice core, and other crystals condense around the ice core. In fact, figuratively speaking, water is composed of water molecules. When the water temperature reaches 0℃, the water molecules are ready to solidify, that is, freeze.

But this time, it's embarrassing. Some water molecules need to be frozen first to "lead" other water molecules to freeze happily. But at this time, if no one takes the lead (in very pure water, there are no pollutants or particles that can form ice crystals around, because of the unique thermodynamics of water, crystallization is difficult to achieve. ), these water molecules will dry up and no one will freeze until a water molecule freezes first.

If the ambient temperature is lower than that of water at this time, the temperature of water will continue to decrease, but it will not freeze and become a "supercooled" liquid below 0℃.

At this time, if you shake the bottle with cold water, or throw a stone in the lake with cold water, the water molecules will be strongly shaken or squeezed by the outside world, and some water molecules will freeze quickly first. Because the temperature of water is far below 0℃, the water molecules in the bottle will quickly freeze around.

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