Question

skating on ice is almost impossible at very low temperatures say at around -30°c.why?​

Answer 1

Answer:

miss, here is ur answer

Explanation:

A skate can slide over ice because the ice molecules at the surface cannot properly bond with the molecules of the mass of ice beneath and thus are free to move like molecules of liquid water. These molecules remain in a semiliquid state, providing lubrication.

It had long been believed that ice is slippery because the pressure of an object in contact with it causes a thin layer to melt. The hypothesis was that the blade of an ice skate, exerting pressure on the ice, melts a thin layer, providing lubrication between the ice and the blade. This explanation, called "pressure melting", originated in the 19th century. This, however, did not account for skating on ice temperatures lower than −20.5°C, whereas skaters often skate on lower-temperature ice. In the 20th century, an alternative explanation, called "friction heating", was proposed, whereby friction of the material was causing the ice layer melting. However, this theory also failed to explain skating at low temperature. In fact, neither explanation explained why ice is slippery when standing still even at below-zero temperatures.

According to the cites, it's the nature of the ice, not the skate, that makes for a slick surface.

Answer 2

$\huge\tt\red{Answer}$

.The skates glide easily on this layer of water. In Antarctica, however, the temperature and the ice are simply too cold. This can occur in other areas where the temperature dips below -20 F. The water on the ice simply refreezes too quickly, trapping the skate blades instead of enabling them to glide.