Simple Machines Assessment Noel Pd 4

36 Questions | Total Attempts: 27

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Simple Machines Assessment Noel Pd 4


Questions and Answers
  • 1. 
    A slanted surface used to raise an object is ______________
    • A. 

      An inclined plane

    • B. 

      A screw

    • C. 

      An effort ramp

    • D. 

      An efficiency board

  • 2. 
    A device that does work with only one movement and changes the size and direction of a force is __________________
    • A. 

      A compound machine

    • B. 

      A simple machine

    • C. 

      An effort machine

    • D. 

      A wedge

  • 3. 
    A bar that is free to pivot about a fixed point is a _____________
    • A. 

      Lever

    • B. 

      Wedge

    • C. 

      Fulcrum

    • D. 

      Ramp

  • 4. 
    The work output of a machine compared to the work input is the _________ of the machine.
    • A. 

      Efficiency

    • B. 

      Power

    • C. 

      Effort

    • D. 

      Resistance

  • 5. 
    The amount by which a machine multiplies an effort force is called the _________
    • A. 

      Resistance force

    • B. 

      Efficiency

    • C. 

      Fulcrum

    • D. 

      Mechanical advantage

  • 6. 
    Two inclined planes put together form a simple machine called  _________________
    • A. 

      A screw

    • B. 

      A wedge

    • C. 

      A lever

    • D. 

      An incline plane

  • 7. 
    An inclined plane wrapped around a cylindrical post is a 
    • A. 

      Screw

    • B. 

      Wedge

    • C. 

      Lever

    • D. 

      Block and tackle

  • 8. 
    Two or more simple machines working together is called ________________
    • A. 

      A pulley

    • B. 

      A compound machine

    • C. 

      A wheel and axle

    • D. 

      A lever

  • 9. 
    The unit for power is the ___________ 
    • A. 

      Joule

    • B. 

      MA

    • C. 

      Watt

    • D. 

      Second

  • 10. 
    A lever with a mechanical advantage greater than 1 is used to _____________
    • A. 

      Increase resistance distance

    • B. 

      Change direction

    • C. 

      Decrease effort force

    • D. 

      Increase speed

  • 11. 
    Three of the listed simple machines are basically the same.  Choose the one that DOES NOT belong with the group.
    • A. 

      Wedge

    • B. 

      Lever

    • C. 

      Pulley

    • D. 

      Wheel and axle

  • 12. 
    A system of pulleys designed to reduce the effort force is called _________________
    • A. 

      A simple pulley

    • B. 

      A fixed pulley

    • C. 

      A movable pulley

    • D. 

      A block and tackle

  • 13. 
    Two simple machines that are part of a bicycle are _____________
    • A. 

      An inclined plane and a wedge

    • B. 

      An inclined plane and a lever

    • C. 

      A gear and a wheel and axle

    • D. 

      A wheel and axle and an inclined plane

  • 14. 
    Which of the following groups of simple machines represent variations of the lever?
    • A. 

      Pulley, inclined plane, and wedge

    • B. 

      Pulley, wheel and axle

    • C. 

      Pulley, wedge, and screw

    • D. 

      Wedge, screw, and wheel and axle

  • 15. 
    The MA of a single fixed pulley is always one because
    • A. 

      The pulley changes only the direction of the effort force

    • B. 

      The pulley changes only the size of the effort force

    • C. 

      The pulley changes the size and direction of the effort force

    • D. 

      The pulley changes only the speed at which the effort force is applied

  • 16. 
    Which of the following CANNOT be done by a simple machine?
    • A. 

      Change the direction of a force

    • B. 

      Increase the amount of work being done

    • C. 

      Decrease the time it takes to do the work

    • D. 

      Transfer energy from one location to another

  • 17. 
    A machine that changes only the direction of a force has an MA of ______________
    • A. 

      10

    • B. 

      5

    • C. 

      3

    • D. 

      1

  • 18. 
     What is the IMA of the inclined plane below?IMA = Effort Distance/Resistance DistanceActual MA = Resistance Force/ Effort ForceW = FxDWin = Fe x DeWout = Fr x DrWin = WoutEfficiency = Wout/Win x 100 
    • A. 

      1

    • B. 

      3

    • C. 

      .33

    • D. 

      5

  • 19. 
    What is the IMA for this pulley system?
    • A. 

      0

    • B. 

      2

    • C. 

      4

    • D. 

      6

  • 20. 
    Which pulley system will require the greatest effort distance to raise the resistance force 1 meter?
    • A. 

      System A

    • B. 

      System B

    • C. 

      The effort distance will be the same for both A and B

    • D. 

      More information is needed

  • 21. 
    Which lever below is a first class lever?
    • A. 

      Lever A

    • B. 

      Lever B

    • C. 

      Lever C

  • 22. 
    Which lever below is a second class lever?
    • A. 

      Lever A

    • B. 

      Lever B

    • C. 

      Lever C

  • 23. 
    Which lever below is a third class lever?
    • A. 

      Lever A

    • B. 

      Lever B

    • C. 

      Lever C

  • 24. 
    Which lever below has the greatest mechanical advantage?
    • A. 

      Lever A

    • B. 

      Lever B

    • C. 

      Lever C

  • 25. 
    The ___________________ is an example of a second class lever.
    • A. 

      Fishing pole

    • B. 

      Wheel barrow

    • C. 

      See saw

    • D. 

      Hockey stick

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