Ch. 5 11-3-09
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| power is work done over a(n)_________ | time
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| distance between the threads of a screw is called the ______ | pitch
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| friction changes the useful work of a machine into ________ energy | thermal
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| if a weight lifter is holding barbells above his head, what does he have to do to perform work | lower barbells
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| a slanted surface used to raise an object is a(n) __________ | inclined plane
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| a bar that is free to pivot around a fixed point is a(n)_____ | lever
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| the rate at which work is done is called _______ | power
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| the amount by which a machine multiplies an effort force is called the _______ | mechanical advantage
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| an inclined plane with one or two sloping sides forms a machine called a(n) __________ | wedge
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| an inclined plane wrapped around a cylindrical post is a(n) _______ | screw
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| a winding mountain road is an example of a(n) ______ | inclined plane
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| work , like energy,is measured in | joules
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| the unit of power is the __________ | watt
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| 2 simple machines are part of a bike what are they | gear\wheel and axle
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| a wheelbarrow is an example of what type of letter_______ | second class
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| when 2 simple machines work together, they are called a(n)________ | compound machine
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
fallenheart
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