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

1. Friction is a "catch-all" term for many processes that oppose:

Heat.

Wear.

Motion.

Temperature.

Section 7.3

Explanation

Section 7.3

About This Quiz

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

Section 7.1

Explanation

Section 7.1

3. The fixed point around which levers rotate is called the:

Input Arm.

Output Arm.

Fulcrum.

Lever Arm.

Section 7.2

Explanation

Section 7.2

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

Scissors.

A bicycle.

A jackknife.

A see-saw.

Section 7.2

Explanation

Section 7.2

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.

Section 7.2

Explanation

Section 7.2

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