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science chapt.

science vocab. and definations for chapt. 2

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