Study

3rd Grade Machines

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  • Is this a simple or complex machine? What type of energy does it use?
    It is complex. It uses electrical energy.
  • What is this invention? What does it do?
    It is a printing press. It makes books, magazines and other papers quickly.
  • What is a lever? What is its function?
    It is simple. It moves things using a bar and pivot.
  • What is a pulley? What is its function?
    It is a simple machine. I uses a wheel and a rope to lift things.
  • What is a ramp? What is its function?
    It is a simple machine. It helps us raise and lower objects.
  • Is this a simple or complex machine? What type of energy does it use?
    It is complex. It uses fuel/ gas energy.
  • Name the two types of machines?
    Simple and complex.
  • Give an example of a simple machine.
    Ex: pulley, ramp, inclined plane, wheel, lever, etc.
  • What are the different simple machines that make a bike?
    Levers (brakes, handlebars), Wheels (wheels and gears)
  • Is this a simple or complex machine? What type of energy does it use?
    It is simple. It uses human/ manual energy.
  • What is this invention? What does it do?
    It is a radio. It helps us receive information.
  • Give an example of a complex machine.
    Ex. bike, computer, telephone, etc.
  • What is a wheel? How does it work?
    It is a simple machine. It rotates around an axle.
  • What is this invention? What does it do?
    It is a steam engine. It helps transport things using steam energy.
  • Is this a simple or complex machine? What type of energy does it use?
    It is complex. It uses fuel/ gas energy.
  • What is a complex machine?
    Machines that are made of many components.
  • What is this invention? What does it do?
    It is the phone. It helps us communicate.
  • What is a simple machine?
    A machine made from a small number of components.
  • Is this a simple or complex machine? What type of energy does it use?
    It is complex. It uses human/ manual energy.
  • What are gears? What is their function?
    They are simple. They are wheels with teeth and help things move.
  • Is this a simple or complex machine? What type of energy does it use?
    It is complex. It uses electrical energy.