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Forces and Simple Machines

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  • An object that makes work easier is called a
    Machine
  • The force that pulls objects towards the earth is...
    Gravity
  • A greater mass requires ______ force to move it.
    a greater
  • The force applied to cause a simple machine to do work is...
    Effort
  • An object that makes work easier is...
    Machine
  • True or False: The amount of effort needed on a lever is determined by the GRAVITY between the effort and the fulcrum.
    False
  • What is the weight of the object being moved called?
    Load
  • A block and tackle allows you to use ______ force when lifting an object because the rope moves a greater distance.
    less
  • A force moving an object over a distance is called ...
    work
  • The force that resists the movement of objects against each other is...
    Friction
  • A wedge is one or more ______ used to force materials apart.
    Inclined Planes
  • True or False: A screw is a WEDGE wound around an axle.
    False
  • A pulley is a ______ with a groove that can hold a rope.
    Wheel
  • Why should Christians value work and machines?
    Christians glorify God when they invent machines that help others and obey God's command to wisely use the earth and its resources.
  • True or False: A FULCRUM is the point on which a lever turns
    True
  • True or False: A FORCE is a push or a pull
    True
  • A change in position is...
    Motion
  • The amount of work you do depends on how much ___________ you use to move an object.
    Force
  • The inclined plane on a screw is called...
    the thread
  • True or False: An inclined plane is a HILLY, sloped surface.
    False
  • A lever is a ______ that turns on a point.
    Bar
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