Chapter 8 Vocab.
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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| pulley | a smiple machine that consists of a wheel over which a rope, chain, or wire passes
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| Lever | a simple machine that consists of a bar that pivots at a fixed point called a fulcrum
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| wedge | a simple machine that is made up of two inclined planes and that moves; often used for cutting
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| screw | a simple machine that consists of a inclined plane wrapped around a cylinder
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| wheel && axle | a simple machine consiting of two circular objects of different sizes; the wheel is the larger of the two circular objects
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| inclined plane | a simple machine that is a straight, slanted surface, which facilitates the raising of loads; a ramp
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| machine | a device that helps do work by either overcoming a force or changing the direction of the applied force
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| work input | the work done on a machine; the product of the input force and the sitance through which the force is exterted.
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| work output | the work done by a machin; the product of the output force and the distance through which the force is exerted
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| mechanical advantage | a number that tells how many time a machine mulitples force
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| mechanical efficiency | a quantity usually expresed as a percentage, that measures the ratio of work output to work input; it can be calculated by dividing work output by work input
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| compound machine | a machine made of more than one simple machine
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| power | the rate at whihch owkr is done or envergy is transformed
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| watt | the unit used to express pwer; equivalent to joules per second (symbol W)
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| Work | the transfer of energy to an object by using a force that causes the object to move in the direction of the force
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| joule | the unit used to express energy; equivalent to the amount of work done by a force of 1 n acting through a distance of 1 m in the dircestion of the force (symbol J)
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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:
SloaneSarabia16
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