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9Sci Ch7

CH 7 Vocab 9SCI

TermDefinition
bionics designing replacement body parts
compound machine combination of two or more simple mchines
efficiency ratio of useful work put out by a machine to work put into that machine
effort arm part of lever where effort force is applied
fulcrum the fixed part where a lever pivots
ideal machine machine that works 100% efficient; work out = work in
inclined plane simple machine containing a sloping surface (ramp) used to raise objects
lever simple machine with a bar that is free to pivot (rotate) around a fixed point (fulcrum)
machine device that makes work easier
mechanical advantage number of times a machine multiples
power measure of work doe in a certain time
pulley simple machine with a grooved wheel and a rope or chain running along the wheel
wedge simple machine with moving inclined plane with one or two sloping sides
wheel & axle simple machine that has two different sized wheels that rotate
Created by: hockettd