Why Is Ice So Slippery?

At minus seven degrees c, most of the molecules on the surface of ice are free to roam. They roll around the surface as if they are tiny ball bearings. And that reduces the friction so, so so much. It makes ice ultra slippery. But at zero degrees c, all of the surface starts to soften and you get this combination of a super slippery surface and slightly mushier, slightly softer ice underfoot. So that's why ice is slippery. Since the name of your book is sticky, let's talk about sticky. And glue is is about as sticky as you can get. I think in school we tend to learn about, you know, you put some pressure on the ice

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