Why is the tape smooth?

The reason to explain why the smooth tape is still a mystery, because ice doesn't always follow a certain rule.

We still know that it is liquid water under low temperature conditions that turn into solid, but other solids are not so slippery, for example, when magma cools, it turns into stone and obviously the stone is not slippery.

Moreover, the ice is not smooth due to cold, because we can walk on the frozen concrete surface without slipping. So the question is why is the water turning solid so slippery?

The slippery ice has nothing to do with it being solid.

According to HowStuffWorks, scientists understand that slippery ice has nothing to do with being solid. It may be because the ice surface has quickly moved to the liquid, so do you slip on the ice just like sliding when you go on a new floor. So why is there water on the surface that doesn't freeze like the bottom?

Some experts say that the liquid that makes the ice smooth is made up of melting pressure , which means that when we step on the ice, the pressure our legs make causes the ice surface to melt. However, in fact humans are not heavy enough to melt ice just by stepping on it so the melting pressure is not a way to explain.

Another theory is that slippery ice is caused by friction created from two solid objects rubbing against each other. When the skating blade rubs against the ice, friction will heat the ice and melt a thin layer of ice above.

Another theory is that the reason is in the nature of ice . Scientists found that water does not completely freeze as we thought. Although the naked eye cannot be seen, it is actually wrapped around by a very thin and unstable liquid layer. The molecules moving on this layer do not have hexagon structure (6 regular edges) as inside the ice block. So it is this liquid that causes the ice to be slippery.

Slippery phenomena can be explained by one or both of the above hypotheses, but perhaps still don't make us feel better when we fall.