Chapter 7 Practice Quiz Cpl - Period 1 - Friday, 4/17/20

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    Friction is a “catch-all” term for many processes that oppose:

    • Heat.
    • Wear.
    • Motion.
    • Temperature.
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Chapter 7 Practice Quiz Cpl - Period 1 - Friday, 4/17/20 - Quiz
About This Quiz

Archbishop Wood High SchoolPhysics 9 CPL – Period 1Date: 4/17/20
Chapter 7 Practice Quiz – Machines, Work, and EnergyMs. AntesDIRECTIONS:
Identify the choice that best completes the statement or answers the question.


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  • 2. 

    The metric unit for work is the:

    • Newton.

    • Joule.

    • Watt.

    • Meter.

    Correct Answer
    A. Joule.
    Explanation
    Section 7.1

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  • 3. 

    The fixed point around which levers rotate is called the:

    • Input Arm.

    • Output Arm.

    • Fulcrum.

    • Lever Arm.

    Correct Answer
    A. Fulcrum.
    Explanation
    Section 7.2

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  • 4. 

    All of the following are considered to be simple machines EXCEPT:

    • Scissors.

    • A bicycle.

    • A jackknife.

    • A see-saw.

    Correct Answer
    A. A bicycle.
    Explanation
    Section 7.2

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  • 5. 

    In a theoretical machine, work output:

    • Can be calculated by dividing output displacement by output force.

    • Is always greater than the work input.

    • Can be calculated by multiplying output force by output displacement.

    • Is always less than the work input.

    Correct Answer
    A. Can be calculated by multiplying output force by output displacement.
    Explanation
    Section 7.2

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