5th grade Ch. 13 Lesson 4 what are simple machines
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5th grade Ch. 13 Lesson 4 what are simple machines

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5th grade Ch. 13 Lesson 4 what are simple machines 5th grade Ch. 13 Lesson 4 what are simple machines Presentation Transcript

  • Ch. 13 Lesson 4 What are simple machines?
  •  
  • machine
    • device that changes the direction or the amount of force needed to do work
  • 6 kinds of
  • inclined plane
    • slanting surface that connects a lower level to a higher level
  • inclined plane
  •  
  • screw
    • inclined plane wrapped around a center post
  • screw
  •  
  • wedge
  •  
  •  
  • lever
    • stiff bar that rests on a fulcrum
  • lever
  • lever
  • wheel and axle
    • ex: doorknob
    • wheel =knob
    • axle =post that attaches to its center
  • wheel and axle
  •  
  •  
  • pulley
    • changes the direction of motion to which a force is applied
  • pulley
  • complex machine- made of more than 1 simple machine
  • complex machine
  • Edheads -Simple Machines
  • Simple Machines Game
    • Simple Machines game
    • http://staff.harrisonburg.k12.va.us/%7Emwampole/1-resources/simple-machines/index.html
    • http://sunshine.chpc.utah.edu/javalabs/java12/machine/index.htm
    • http://www.galaxy.net/~k12/machines/index.shtml
    • http://www.quia.com/pages/hostetterscience.html#simple
    • How can we move our principal game