science vocab. and definations for chapt. 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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| work | force x distance
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| machine | a device that changes the amount of a force applied to an object , the direction of the force or both
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| lever | a simple machine having an arm about a fixed point
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| fulcrum | the fixed point on a lever
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| effert arm | the part of a lever on which a person or another machine appiles a force on
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| resistance arm | the part of a lever that applies a force on an object
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| pulley | a wheel that has a groove along its edges
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| wheel and axle | a simple machine that hascentral pivet around which a wheel moves
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| inclined plane | a flat sloping surface
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| wedge | a simple machine that is made up of two of more inclined planes
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| screw | an inclined plane wrapped around a cylinder or a cone
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| compound machine | a device that is made up of two or more machines
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| efficiently | the ratio of the work that comes out of a machine to the work put into that machine
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Created by:
drazil
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