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forces and motion 4

machine something that replaces human effort and makes work easier
simple machine A tool that makes work easier; has few or no moving parts
energy the ability to do work
work The ability to move something
wheel and axle a simple machine consisting of a grooved wheel turned by a cord or chain with a firmly attached axle together with supports
lever a simple machine consisting of a solid bar that rotates around a pivot point; used to lift objects
pulley a simple machine made up of a rope wrapped around a wheel. When a downward force is applied on the rope, an upward force is created
screw a simple machine made up of a shaft with grooves that wrap around it going from top to bottom
inclined plane an object with a flat, tilted surface, a simple machine that helps things roll or slide upward off the ground
wedge a simple machine that can be used to split objects apart, hold objects in place, or lift  objects from the ground; consists of two inclined planes joined together
Created by: 12589499
Popular Physics sets




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