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13 Cards in this Set

  • Front
  • Back

energy

the ability to cause change

work

is done when a force exerted on an object causes that object to move some distance.

lever

a simple machine consisting of a rigid rod or plank that pivots or rotates about a fixed point.

spring scale

an instrument used to measure force.

newtons

SI (System Internationale) used to measure Force.

simple machine

a machine that does work with only one movement; includes the inclined plane, wedge, screw, lever, wheel and axle, and pulley.

pulley

a simple machine made from a grooved wheel with a rope or cable wrapped around the groove

inclined plane

a simple machine that is a flat surface, sloped surface, or ramp

wedge

a simple machine consisting of an inclined plane that moves; can have one or two sloping slides.

screw

a simple machine that is an inclined plane wrapped around a cylinder or post.

wheel and axle

a simple machine made from two circular objects of different sizes that are attached and rotate together.

fulcrum

a fixed point around which a lever rotates.

complex machine

also known as a compound machine, consists of two or more simple machines.