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5 Written questions

5 Matching questions

  1. Work
  2. Force
  3. Acceleration
  4. Machine
  5. Wheel and Axle
  1. a Energy used when a force moves an object (p. 416)
  2. b A push or pull that acts on an object (p. 410)
  3. c A device that changes the direction or the amount of
    effort needed to do work (p. 426)
  4. d The rate at which the velocity of an object changes over
    time (p. 422)
  5. e A simple machine consisting of a wheel that revolves
    around a post, or axis (p. 427)

5 Multiple choice questions

  1. An object is electrically charged when it gains or loses
    electrons
  2. Every force has an equal and opposite reaction, and they
    always occur in pairs
  3. Describes how far an object moves during a certain
    amount of time (p. 408)
  4. The state in which the net force is zero (p. 419)
  5. An object at rest will stay at rest until another object
    acts upon it, and an object moving in a straight line at a
    constant speed will continue to move in a straight line at a
    constant speed until a net force acts upon it (inertia)

5 True/False questions

  1. InertiaThe tendency of an object to resist a change in motion (p.
    420)

          

  2. Inclined PlaneA form of simple machine consisting of a slanted surface
    along which objects are easier to push upward than to lift
    straight up (p. 429)

          

  3. PulleyA kind of simple machine consisting of a rope that fits
    onto a wheel and used to change the direction of a force
    (p. 426)

          

  4. PowerThe rate at which work is done (p. 417)

          

  5. LeverA type of simple machine consisting of a bar that turns on
    a support called a fulcrum (p. 428)

          

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