Mr. Yerington’s Updates

News and Information from Mr. Yerington’s Classroom

Levers and Pulleys Unit Test

Posted by iateacher on December 13, 2007

Hello parents, guardians and students,

We are quickly coming to the end of our Levers and Pulleys Unit.  😦  I think it was a lot of fun!  I am planning on the final unit test being next THURSDAY, DECEMBER 20.  There are items below to study.  Also, this time I did take the time to make an online test which you can find here.  Hope all of this will help!

Now, on to the study guide:

VOCABULARY

  • lever
  • load
  • fulcrum
  • effort
  • Newton
  • diagram
  • advantage
  • pulley
  • simple machine

OTHER

  • Be prepared to correctly read a spring scale
  • Be prepared to correctly diagram one or more lever systems (using the proper symbols)
  • Be able to correctly label several real-world levers with the load, fulcrum and effort symbols and direction of force
  • Be able to tell which pulley systems WILL and WILL NOT provide the user with an advantage by reducing the effort
  • Be able to calculate the effort needed to lift a load in a particular pulley system
  • Know how far one must pull the rope in order to move the load specified distance
  • Be able to identify pulley systems that WILL and WILL NOT work properly
  • Explain how to load a large boulder into a truck using a lever and a pulley

The test will be 49 points.  If students have questions about any of the following I encourage them to see me BEFORE the test day for help!

Thanks

Mr. Yerington

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