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In some situations, friction is very important and beneficial. There are many things that you could not do without the force of friction. ... Fluid friction or air resistance can greatly reduce the gas mileage in an automobile. Cars are streamlined to reduce friction. However, driving at highway speeds with your windows...
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www.school-for-champions.com/Science/friction_uses.htm
www.school-for-champions.com/Science/friction_uses.htm
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There are two most widely used methods to reduce friction__･ Using lubricants. ･ Converting Sliding Friction into Rolling Friction
http://wiki.answers.com/Q/Methods_to_reduce_friction
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As it turns out, the rougher two surfaces are, the more friction there is between them when they rub together. By making things really smooth, or by adding lubricants like grease and oil, engineers work hard to reduce friction and in the long run, save energy.
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teacher.scholastic.com/dirtrep/friction/invest.htm
teacher.scholastic.com/dirtrep/friction/invest.htm
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We wanted to see how we can reduce friction. First we took a paperback book and put string through the book. Then we took little weights and put them on the string that was attached to the book. ... Sometimes you want to reduce friction. Then you use rollers, oil, was, make the surface as smooth as possible. If you want...
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www.onekama.k12.mi.us/e2002/g5/science/reduce.friction....
www.onekama.k12.mi.us/e2002/g5/science/reduce.friction.htm
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I predicted that rollers will move the books faster because wheels, tires and round things can reduce friction. ...Ethan ... Rollers reduce friction. Sometimes rollers are used to move large things. ... Katherine...
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www.onekama.k12.mi.us/e2003/g5/science/roller/reduce.fr...
www.onekama.k12.mi.us/e2003/g5/science/roller/reduce.friction.htm
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Explain to students that the amount or force of friction depends on two things: the type of surfaces that are touching (e.g., waxed kitchen floor versus rocky pavement) and the force pressing the surfaces together (e ... (For example: gymnasts use chalk on their hands to reduce friction between their hands and uneven bars;
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school.discoveryeducation.com/lessonplans/programs/fric...
school.discoveryeducation.com/lessonplans/programs/frictioninourlives/index.html
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In short friction is the force that slows moving objects and it causes things to get hot. ; You are walking on the street and you walk onto ice. Does the friction between your shoes and the ice increase or decrease? ... ; Answer; HOT, friction causes heat. Sometimes we want to reduce friction. For example in a car engine...
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www.icteachers.co.uk/children/sats/friction.htm
www.icteachers.co.uk/children/sats/friction.htm
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If present in faults during a quake, the gel may reduce friction to nearly zero in some situations, resulting in larger energy ... "This work is a nice example of how fascinating scientific research can be and how a team of workers at all levels of experience can learn new things by working together." - Terry Tullis...
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www.sciencedaily.com/releases/2004/01/040130075251.htm
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What does reduce friction mean? Do any objects have no friction? What two things reduce frictions? How do you reduce friction between objects? Ways to reduce friction between two objects? How can yo reduce frection between to objects?
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wiki.answers.com/Q/How_can_you_reduce_friction_between_...
wiki.answers.com/Q/How_can_you_reduce_friction_between_two_objects
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