Match the simple machine with the correct definition.
1.___pulley
2.___wedge
3.___first - class lever
4.___screw
5.___Inclinded plane
6.___second - class lever
7.___wheel and axle
8.___lever
9.___third - class lever
A. any slanting, flat surface
B. a rigid bar that rotates about a pivot called a fulcrum
C. an inclined plane wrapped around a cylinder
D. load is in the middle
E. two inclined planes placed back to back
F. a wheel turning around an axle inserted through its center
G. effort is in the middle
H. a circular lever that consists of a grooved wheel rotating about a hub
I. fulcrum is between the effort and load
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