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8 Sci Ch 16

8th Grade Science Chapter 16 Vocabulary

QuestionAnswer
WORK DONE WHEN A FORCE PRODUCES MOTION PARALLEL TO THE DIRECTION OF THE FORCE.
POWER DESCRIBES THE RATE AT WHICH WORK IS BEING DONE.
MACHINE A DEVICE THAT MAKES WORK EASIER BY CHANGING THE SIZE OR DIRECTION OF THE FORCE APPLIED TO IT.
SIMPLE MACHINE A MACHINE WITH ONLY ONE MOVEMENT AND IS THE SIMPLEST FORM OF TOOL.
COMPOUND MACHINE A COMBINATION OF SIMPLE MACHINES.
EFFORT FORCE THE FORCE YOU EXERT.
RESISTANCE FORCE THE FORCE YOU MUST OVERCOME.
MECHANICAL ADVANTAGE COMPARES EFFORT FORCE APPLIED TO A MACHINE TO THE RESISTANCE FORCE IT MUST OVERCOME.
INCLINED PLANE A SLOPED SURFACE OR RAMP.
WEDGE A MOVING INCLINED PLANE.
SCREW AN INCLINED PLANE WRAPPED AROUND A SHAFT.
LEVER A ROD OR PLANK THAT PIVOTS ABOUT A POINT.
FULCRUM THE POINT WHERE A LEVER PIVOTS.
WHEEL AND AXLE TWO RIGIDLY ATTACHED WHEELS THAT ROTATE TOGETHER.
PULLEY A SURFACE, SUCH AS A WHEEL, THAT REDIRECTS FORCE USING A ROPE.
EFFICIENCY THE ABILITY OF A MACHINE TO CONVERT WORK INPUT INTO WORK OUTPUT.
Created by: smurray817 on 2011-04-10



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