work and power
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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| work | the transfer of energy to an object by a force that makes an object move in the direction of the force. is only being done while the force is applied tto an object
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| power | the rate at which work is done
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| mechanical advantage | the ratio of a machine's output force produced to the input force applied
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| efficiency | the ratio of the output work to the input work
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| simple machines | do work using only one movement
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| lever | a simple machine made up of a bar that pivots, or rotates, about a fixed point
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| fulcrum | the point about which a lever pivots
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| wheel and axle | an axle attached to the center of a wheel and both rotate together
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| inclined plane | flat, sloped surface
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| wedge | a sloped surface that moves
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| screw | an inclined plane wrapped around a cylinder
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| pulley | a simple machine that is a grooved wheel with a rope or a cable wrapped around it
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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.
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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:
booecam3836
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