This February Hopes she'll be showing off her cool moves Winter Olympic Games in Vancouver, Canada. "I'm going to work quite toughto achieve that aim," says Rachael, one of the highest-ranked skaters in the world. When she chooses to the ice, then her skates'blades slide easily over the slick surface. And if the athlete preparing for a twist or is landing a reverse, ice leaves her hintspossible. https://www.linkedin.com/pulse/best-skateboards-for-beginners-skates-zone/

But how? Keep reading to learn.Chill FactorJust like the ice cubes that trendy your Lemonade, the slab of ice beneath Rachael's skates is made up of water molecules. Oxygenmolecule that compose a water molecule discuss and the two hydrogen atoms electrons. "But the sharing is not equal," says PaulDoherty, a physicist at the Exploratorium in California. One facet of the water molecule ends up with a negative charge and theother hand. This causes water molecules to be drawn to one another.

When temperatures are above 0[degrees]C (32[degrees]F), water molecules jiggle and pull these links apart. The result? Liquidwater. However, as the motion, temperatures dip slows down. The water molecules may give in to their appeal and pack. Liquid water turnsinto ice that is solid. That's why the ice Rachael glides over is kept At a teeth-chattering -3[degrees]C (27[degrees]F). This way, spins without landingat a pool of water and Rachael can show off her jumps. Slip-N-SlideGood thing for Rachael that ice Isn't only Strong slick. Skaters would be fulfilled with an ear-splitting screech if they triedtheir stunts on additional solids like glass or concrete. Why is ice slippery?

 Scientists are still puzzling over this question. But physicists know One thing: The response given in manycollege textbooks is wrong. Researchers used to think that a skater's Weight put pressure on the ice, causing it to melt at a lower temperature. Butexperiments demonstrated that this stress change is too small to make ice melt. Now, another force is thought by many scientists Holds the clue: friction that is slippery. When Rachael pushes her thighs, herskates' blades rub from the ice. That rubbing creates.

With each leg stroke, the heat warms the ice beneath the skater's feet up.After the ice's temperature climbs above freezing, a thin coating on the outside melts into liquid water (see Why Ice Is Slippery,page 14). The water acts under the skates to allow for graceful glides quick spins, and landings of Rachael. Liquid LayerRachael can not be too careful on the ice rink. Whether she is landing a triple axel or making her final present, there's a chanceof slipping. May slip. This led scientists to think that there needs to be more to the slipperiness than friction of ice . Scientists have found that ice's surface Is slick.

The water molecules are lined up like cars in a parking garage, with arrangedvehicles. But like the cars on the floor of the garage door, the molecules at the top layer of ice don't have any molecules overthem. "[Molecules in the upper layer] are a bit Fleer to maneuver about," Doherty says. These molecules act more like a liquid than asolid. "The surface is similar to water and allows the blades to slide," he says. That's a good thing Glide across the slick ice to win a medal from the Olympic Games.

Words to KnowMolecule--A set of two or more atoms which By sharing electrons in a chemical 10, are joined together. https://medium.com/@skateszone/best-skateboard-brands-7c4f7d144ea1

Electron negative charge. Pressure Gas. Friction--A force that acts against movement when two surfaces rub against each other. ICE IS SLIPPERYMELTING BY FRICTION: A fast-moving blade creates friction on the ice. This pressure causes heat, which melts the ice crystals intoa thin layer of water. But this reasoning is not the whole story. It doesn't explain a person standing on ice can slide. BUILT-IN SLIPPERY LAYER:A liquid-like movie is present on the surface of ice.

Chains of water molecules across the layer are exposed to atmosphere and areunable to form strong ice crystals. It's easy to slip on those chains, which permeate like liquid water molecules. Quick quiz1. When the temperature rises above 0[degrees]C (32[degrees]F), ice varies from a to a.(A) gas, strong(B) liquid, strong(C) liquid, gas(D) strong, liquid2. A water molecule is made of.(A) two hydrogen atoms and an oxygen molecule(B) two oxygen atoms and a hydrogen atom(C) electrons(D) ice particles3.

Which excuse for ice's slipperiness is Widely mentioned but false? (A) Friction in the skate's blades melts ice. (B) The skater puts pressure on the ice, Causing it to melt. (C) Ice is naturally slippery due to this Layer's structure. (D) None of the aboveANSWERS1. d 2. a 3. bBEFORE READINGSet a PurposeLearn why ice is slippery and just how the Sports are made by characteristics of the solid that is common such as ice. WallpaperIf you think all ice is the same, consider again. Water ice can occur as up to 15 crystalline phases of water.

Ice fall and snowcalled hexagonal icehockey, the variety. Other types can happen under extreme pressure and temperature combinations, either hereon Earth or on other planets. * Hexagonal ice gets its name due to the fact The water molecules line up in a pattern. Why all snowflakes have six sides, thatis. Discussion Question* Have you ever slipped on ice? Can you reduce Your chances of slipping by wearing certain kinds of sneakers? How do you thinkthis works? (Answers will vary, but must include that boots with ridges for traction would decrease one's likelihood of slippingon ice because the ridges raise friction, keeping the shoe from slipping away from under you.)

AFTER READINGDiscussion QuestionFor a time, scientists thought in the Incorrect explanation for the question, "Why is ice slippery?" What are a few examples ofscientists finding new theories to replace erroneous beliefs? (Possible responses: Scientists used to believe the sun revolvedaround the Earth until the discovery that it's the other way around; scientists used to believe that heavier objects fell fasterthan light ones before it had been proved that gravity accelerates all objects in the same rate.)

 RESOURCE* Ice and People, by Nikki Bundey (Carolrhoda Publications, 2000). This book reviews what ice hockey is and the way animals andhumans deal with cold and ice. Directions: Match the word(s) from the left Column with the correct phrase. 1. Stress a. The particle in an atom that's a negative charge. 2. Molecule b. A force which acts against motion when two surfaceRub each other.3. Electron c. A set of two or more atoms which are joinedtogether by sharing electrons At a chemical bond. 4. Friction d. A force that is applied against a gasoline, Liquid, orsolid. https://github.com/skateszone/skate/wiki/Best-Skateboard-Brands-List