Name____________________________________

Work and Machines: Vocabulary Matching
 1 ___  compound machine grooved wheel with a rope, chain or cable running along the groove
 2 ___  efficiency inclined plane wrapped in a spiral around a cylindrical post
 3 ___  inclined plane transfer of energy that occurs when a force makes an object move
 4 ___  input force sloping surface that reduces the amount of force required to do work
 5 ___  lever  amount of work done in one second
 6 ___  machine  measure of how much work put into a machine is changed into useful output work by a machine
 7 ___  mechanical advantage simple machine that consists of an axle attached to the center of a wheel
 8 ___  output force  ratio of the output force to the input force
 9 ___  power  force applied by machine
 10 ___  pulley  force applied to machine
 11 ___  screw  machine that does work with only one movement of the machine
 12 ___  simple machine  bar that is free to pivot or turn around a fixed point
 13 ___  wedge  combination of two or more machines
 14 ___  wheel and axle  inclined plane with one or two sloping sides
 15 ___  work  device that makes doing work easier

Match the units.
16 ___

joules

 power
17 ___ watts force
18 ___ seconds distance
19 ___ newtons work
20 ___ meters time
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