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Lesson 3.3
Term | Definition |
---|---|
Simple machines | do work using only one movement |
lever | a simple machine made up of a bar that pivots, or rotates, about a fixed point |
fulcrum | the point about which a lever pivots |
wheel and axle | an axle attached to the center of a wheel and both rotate together |
inclined plane | a flat sloped surface |
wedge | a sloped surface that moves |
screw | an inclined plane wrapped around a cylinder |
pulley | a simple machine that is grooved wheel with a rope or a cable wrapped around it |