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science F2

QuestionAnswer
work when force is applied to an object
machine anything that changes the amount of force on an object
lever asimple machinehaving an arm that moves around a fixed point
fulcrum the fixed point on a lever
effort arm the part of the lever that you applie the effort
resistence arm the part of the lever that applies the force on the object
pulley a wheel that has a groove along its edge
wheel and axle a machine where the wheel and the axle turn around the central pivot
inclined plane a flat sloping surface
wedge a machine made of one or two inclined planes
screw an inclined plane wrapped around a cylinder or cone
compound machine a device made up of two or more simple machines
efficiency the ratio of the amount of work put out of a machine into a machine
Created by: spartans rule
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