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Rand 4th simple mach

4th grade Harcourt Science Unit F Ch 3 Simple Machines

WordDefinition
effort force force you put into a simple machine
wedge two inclined planes placed back-to-back
simple machines basic machines that make up other machines
work result of a force moving an object through a distance
inclined plane flat surface that has one end higher than the other
fulcrum fixed point of a lever
pulley rope or chain and the wheel it fits around
screw inclined plane wrapped around a pole
lever bar that turns around a fixed point
efficiency how well a machine changes effort into work
wheel and axle large wheel attached to a smaller wheel or rod
Created by: crandolph on 2007-03-20



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