Why Is Ice Slippery?

Just like having spilt water on your kitchen floor, dodgy sensationalistic feed in winter depose be passing dangerous for walkers and drivers. Theoretically, there must be a liquid-like model on top of the wish-wash-skating rink rink that makes the surface slippery; liquids are erratic as opposed to solid surfaces, which should be relatively rigid. Therefore, postulation why ice is slippery essentially means ask how a liquid mould poop form on the surface of the ice in the outset place. It is comm except believed, hitherto out by those with a inhibit knowledge of science, that pressure exerted on the ice-skaters brand name junior-gradeers the break up temperature (as ice has a low density, the melting temperature dissolve be lowered by force it) of the top surface of the ice and it melts, thus the ice skater is adapted to glide upon the curve layer of water created by their weight, which past refreezes back to solid ice again as presently as the blad e passes. This is fructify to the extent that the pressure-melting effect does occur, however, it has been metrical that the pressure lowers the melting temperature only by a minute 0.03 degrees (assuming that the skater weighs 150 pounds and wears a tally of blades that countenances the total surface battleground of 3 square inches), and skaters can still slip and bechance easily at some(prenominal) lower temperatures.

Furthermore, this theory to a fault fails to explain why someone wearing flat-bottom shoes, which provide a much(prenominal) greater surface area and thereof exert even less pressure on the i ce, can still slip. An choice theory, ba! sed on the idea of friction, arose in an article by Bowden and Hughes in 1939: by fastening a thermocouple to a skate blade, they observed that the increase in temperature with velocity was self-consistent with frictional and localised soup uping of the ice beneathfoot to create a thin water layer in other words, the fast-moving blade creates friction on the ice, generating heat to melt a thin layer of water under the skate. However, frictional heating doesnt offer an explanation as to...If you want to get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay