Chapter 2 Self Quiz

Part A


Indicate whether the statement is true or false.


You would use less force to lift a box if you used a wheel and axle.


To make an object move, the load force must be more than the effort force.


When you use force to make something move, you are doing work.


When you use an inclined plane, you have to change the direction of your effort force.


A screw can be used to lift an object.

Part B

Complete the Sentences
Use the following words to complete the sentences.

screw    wheel and axle    inclined plane     wedge    lever


An ulu is an example of a _______________.



Stairs are an example of a _______________.



The handle of a shovel is an example of a _______________.



A bolt is an example of a _______________.



A doorknob is an example of a _______________.


Part C

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.


Suppose that you wanted to use the least amount of effort force to pull in one direction and move an object in the other direction. What kind of pulley would you use?
a movable pulley
a fixed pulley
a combined pulley


What class of lever is a wheelbarrow?
a first class lever
a second class lever
a third class lever

Part D

Answer the Questions
Use sentences to answer the questions.


How does a machine give you a mechanical advantage?


What three things do levers need in order to do work? Explain what these three things are.

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