Friday, January 23, 2015

For Grade 5's ONLY: SImple Machines-Levers


1) Please go to this website and spend at least ten minutes there reading and understanding the information about the three different classes of levers.  Pay attention to the where the load is in relation to the fulcrum and the effort force: that will help you understand the three classes of lever

2) Then take this quiz.  You must click the blue START button on the top of the page to take the quiz. 

3) When you have finished the quiz please comment on one question you got wrong.  Then comment on one thing  you learned.  You must not have the same comment as a previous poster...

26 comments:

  1. I got question 11, what kind of lever system is a hockey stick? Wrong.
    I learned that a hockey stick is a class 3 lever. And that tongs are a class 3 lever, and that a stapler is a class 2 lever

    ~Jesica

    ReplyDelete
  2. I got the question wrong were it asks you what a benefit obtained by using a lever is and then I answered Newton when the correct answer was advantage there are a few things I learned and a few of them were in a first and lever the fulcrum is in the middle of the effort and the load, that in a second class lever the fulcrum on the end and the effort is on the side and the load is in the middle. In the third class lever the effort is in the middle with the load and fulcrum on the other sides. An example of a first class lever is a see-saw. An example of a second class lever is a stapler or a wheelbarrow. An example of a third class lever would be a fishing rod or a bottle opener. Levers are a tool that is used everywhere and I am sure that there are many more examples that I did not have time to need or I could be her forever!! -Jaden

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  3. I got Q# 10 wrong and learned that a crowbar is a first class lever .:)
    Trysta d.

    ReplyDelete
  4. I got question #11 wrong on the test, and I learned that a hockey stick is a 3rd class lever.
    Graham :}

    ReplyDelete
  5. I thought that in class 3 levers, the effort needed decreases as the load moves farther from the fulcrum. I learned that the effort needed increases as the load moves farther from the fulcrum.

    Jared

    ReplyDelete
    Replies
    1. Yes, but the speed you move the load with increases. Simple Machines...a trade off.

      Delete
  6. I got Q# 12 wrong and I learned a crowbar is a first class lever.wyler.s

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  7. I got Q #2 wrong "A benefit obtained by using a lever is called a(n)" i said the answer was a.newton when it was b.advantage.

    Elise :)

    ReplyDelete
  8. I got the question wrong where it asks, what kind of lever system is a hockey stick from? I learned that a hockey stick is a 3 class lever.
    -Kai D

    ReplyDelete
    Replies
    1. Jake that's really funny did you laugh when you read your post.


      Ashton H

      Delete
    2. That's funny Kai. I did'it know that about hockey sticks?

      Dafydd.

      Delete
    3. Kai, I leared that too I got the question wrong too.

      ~Carter

      Delete
  9. I got question 11 wrong because it was challenging and I didn’t get the question but then remembered then it was to late that good!
    Jake H

    ReplyDelete
  10. I got Q#12 wrong. I learned that a crowbar is a 1 class lever
    leah

    ReplyDelete
  11. I got question 5 wrong on thread class lever. I know why I got it wrong I clicked second class lever instead.
    Dafydd.

    ReplyDelete
  12. 1. I got question 9 wrong.
    2. I learned that a hockey stick is a third class leaver.

    blake

    ReplyDelete
  13. I got question right except the hockey stick one. I learned that a hockey stick is a third class.

    ~Carter

    ReplyDelete

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    ReplyDelete