Science 2
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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| can friction do work on an object? | yes
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| thermal energy | total energy of the moving particles in a substance
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| kinetic friction | energy removed from a moving object by the object it is moving against, two objects must interact, energy in the form of heat
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| static friction | friction between two objects that are not moving, prevents an object from moving, not a force but a threshold
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| mechanical advantage | doing more work with less effort
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| machine | a simple system that reduces the force needed to do work, increases the amount of force applied
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| increasing the force | work stays the same but force is increased
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| increasing the distance | the object gains potential energy
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| changing the direction | force applied in the same direction as load
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| input and output | two forces involved when a machine does work
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| input force | (Fin) force exerted on the machine
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| output force | (Fout) force exerted by the machine
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| examples of an incline plane | slide, ramp
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| examples of a lever | hammer, teeter totter, shovel
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| examples of a wheel and axle | roller blades, door handle, wheel barrow
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| examples of a pulley | well, flag, elevator, crane
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| examples of a screw | light bulb, jar lid
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| examples of a wedge | fork, door step, axe
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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:
syddj123
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