| A | B |
|---|
| Not naturally occurring, manufactured. | Synthetic |
| Motion back and forth along a linear path. | Reciprocating |
| A device used to convert electrical energy to mechanical. | Motor |
| A distance of uniform measure determined at a point on one unit to the same corresponding point on the next unit; used in threads, springs, and other machine parts. | Pitch |
| A fundamental physical force between any two objects in the universe; as applied to the earth, the force that is responsible for the weight of objects. | Gravity |
| A mechanical system of related moving parts or connections. | Linkage |
| The quantity of matter, which a material contains. | Mass |
| A push or pull exerted by one object on another. | Force |
| A rigid piece that transmits and modifies force or motion when forces are applied at two points and it turns about a third. | Lever |
| A substance that cannot be decomposed into simpler substances by chemical means. | Element |
| A continuous band that transmits motion from one pulley to another. | Belt |
| A turning or twisting force. | Torque |
| The gravitational pull (force) on an object. | Weight |
| A wheel with teeth that will allow the transfer of power when coupled to another like part. | Gear |
| A wheel-like simple machine used to reduce input force, change the direction of force applied, or to increase the input distance. | Pulley |
| Clockwise or counterclockwise spin of an object about its own axis. | Rotation |
| Shape or feature on a model. | Detail |
| A continuous band consisting of metal or plastic links that transmits motion from one sprocket to another. | Chain |
| Mutual or reciprocal communication between people and/or systems. | Interactive |
| Providing a substance (i.e. grease) to reduce friction between moving objects. | Lubrication |
| A simple machine used to change the direction of applied force via its triangular shape; used for splitting wood and rocks, raising heavy bodies, or for tightening by being driven into something. | Wedge |
| Stored energy; (Gravitation is stored energy due to elevated position of an object). | Potential Energy |
| The amount of space occupied by a three-dimensional object as measured in cubic units. | Volume |
| A form of energy which uses motion to do work. | Kinetic Energy |
| The support structure around which a lever rotates. | Fulcrum |
