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Physical Science

chapter voc.

QuestionAnswer
____________transfer of energy that occurs when a force makes an object move; measured in joules. work
____________amount of work done, or the amount of energy transferred, in a certain amount of time; measured in WATT, W. power
____________ device that makes doing work easier by increasing the force applied to an object, by changing the direction of an applied force, or by increasing the distance over which a force can be applied. machine
__________force exerted on a machine that is used to do work. effort force
__________force applied by a machine to overcome resistance resistance force
_________number of times a machine multiplies the effort force applied to it. mechanical advantage
_________measure of how much of the work put into a machine is changed into work done by a machine. efficiency
_____________combination of two or more simple machines. compound machine
___________simple machine that consists of a sloping surface, such as a ramp, that reduces the amount of force needed to lift something by increasing the distance over which the force is applied. inclined plane
___________simple machine made from a bar that is free to pivot about a fixed point. lever
____________simple machine that consists of two different-sized wheels that rotate together. wheel and axle
____________simple machine that consists of an inclined plan with one or two sloping sides. wedge
____________simple machine that consists of an inclined plane wrapped in spiral around a cylindrical post. screw
____________machine that does work with only one movement; includes the lever, pulley, wheel and axle, includes the lever, pulley, wheel and axle, inclined plane, screw, and wedge. simple machine
___________simple machine that consists of a grooved wheel with a rope, chain, or cable that runs along a groove, changes the direction of the effort force, and can fixed or movable. pulley
Created by: phamily
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