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mccormick simple ma
Chapter 16 sect. 3 vocabulary
Question | Answer |
---|---|
friction | force that opposes motion between two touching surfaces |
simple machine | a machine taht does work with only one movement |
compound machine | a machine made up of a combination of two or more simple machines |
inclined plane | simple machine that is a flat surface, sloped surface, or ramp |
wedge | simple machine consisting of an inclined plane that moves; can have one or two sloping sides |
screw | simple machine that is as inclined plane wrapped around a cylinder or post |
lever | simple machine consisting of a rigid rod or plank that pivots or rotates about a fixed point called the fulcrum |
wheel and axle | simple machine made from two circular objects of different sizes that are attached and rotate together |
pulley | simple machine made from a grooved wheel with a rope or cable wrapped around the groove |