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Simple Machines
Vocabulary
Term | Definition |
---|---|
Force | Exerting pressure or influence over object or substance |
Friction | The act of a surface or an object rubbing against each other |
Fulcrum | The support on which a lever turns or is helped in moving or lifting something |
Inclined Plane | A plank or plane surface put at an angle to a horizontal |
Lever | A bar which rests on a fulcrum |
Load | Amount of work a machine is expected to perform |
Machine | Any device that applies or changes the direction of power force, or motion |
Axle | Bar on which a wheel turns. |
Power | Strength or force that can be exerted on other bodies. |
Pull | To move, usually with force or effort |
Pulley | A wheel that has a groove in the rim where a rope can run and change the direction of the pull |
Push | To move something away by pressing against it. |
Screw | Cylinder with a ridge winding around it. It's a simple machine. |
Spring | Something that produces action, a moving force. |
Tool | A plank or plane surface put at an angle to a horizontal. |
Torque | A force that causes rotation. |
Wedge | To force an opening. |
Wheel | A round frame that turns on a pin or shaft in its middle. |
Work | And effort in doing or making something. |