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Friction Year 3

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  • How would the absence of friction affect a marble traveling on a long, straight path?
    The marble would remain at constant speed.
  • How to reduce friction?
    use lubricants
  • Which would create more friction? metal of carpet
    carpet
  • What is the unit called that measures force?
    Newton
  • T or F , The rougher the surface, the faster an object will travel over the surface.
    False
  • What is Friction?
    A force between 2 surfaces that are sliding or trying to slide against each other.
  • Rougher surfaces have ...
    greater friction
  • How does friction affect speed?
    more friction decreases speed, or slow down and stop a moving object
  • The amount of friction depends on
    Types of surfaces
  • A type of friction that occurs when air pushes against a moving object
    air resistance
  • What does friction produce?
    Heat
  • Which of these materials do you predict would have the MOST amount of friction, Sand paper or Tile?
    Sand paper
  • An example of not useful friction
    any
  • An example of useful friction
    any
  • Friction can be a problem, it can cause......?
    wear and tear
  • A friction between a surface of a moving object and the water is called?
    water resistance
  • Friction is a force that acts in an ___________ direction of movement.
    opposite
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