[Picture](https://imgur.com/gallery/MKDz4dx)
In: Physics
When water gets frozen quickly in supercooled conditions sometimes the surface becomes covered save for a small hole. Water expands when it freezes, forcing the water underneath to go through the hole and freezing into this spike shape.
IT is pretty simple – ice expands as it freezes. Ice first forms around the outside of the ice cube, and over the top, locking the water inside. But as that water continues to freeze, it expands, creating a crack in the ice and forcing water through it. That ice freezes around the outside, and more water is pushed upwards through it, forming a tube. Water keeps being pushed out and freezing on the top – forming a spike.
This can also happen on freezing puddles and small lakes, forming enormous spikes.
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