Teaching Videos
Why Is Ice Slippery?
markwarner » 10am - Dec 9, 2011
In Sydney, ice melts because it is warm out in the middle of the day...
Rating: 2.3 (16 Votes)
Category: Forces / Motion / Physics
Tags: science, forces, motion, physics, ice, slippery, experiments, science, literacy, freezing, regelation, pressures, states, of, matter, keystage2, keystage3
In Sydney, ice melts because it is warm out in the middle of the day (even in winter). This creates a layer of water on top that certainly makes it slippery. But should it be slippery at night or in a cold northern climate where the air temperature is below zero? Yes, because the pressure your skates apply to the ice actually lowers its melting point allowing you to glide along a thin layer of water.
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