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FRICTION FORCE GRADE 4

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  • Which activity has less friction? skating or rock climbing
    skating
  • Friction between an object and a surface usually stops or slows down the object. True or False?
    True
  • It is easier to cycle on a road than on a grassy field. True or False
    True
  • Lighting a matchstick using a match box is not an example of friction-True or False?
    False
  • Rougher surfaces have MORE or LESS? friction.
    More
  • If there is too much friction, Nothing will move. True or False?
    True
  • Friction between eraser and paper helps us to erase pencil marks-True or False
    True
  • Which would create more friction? metal of carpet
    carpet
  • What is the thing that keeps everything on Earth from flying into the air?
    Gravity (not Friction)
  • Friction makes it easier to slide heavy objects across the floor-True or False?
    False
  • Is it easier to stop a bike on a sunny day or a rainy day?
    It's easier to brake on a sunny day, ground is slippery on rainy days, so you get less friction = harder to stop.
  • True or False? Friction speeds up moving objects.
    False: Friction slows down moving objects.
  • Which things make a greater friction?
    both these factors
    The weight of an object (how heavy it is)
    type of surfaces (rough or smooth)
  • Which surface creates the most friction with skateboard? (Grass. Wood, Stone)
    Grass
  • When there's friction between two objects, the objects become cold. True or False?
    False
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