| A | B |
|---|
| pulley | A wheel that turns readily on an axle. |
| wheel and axle | A wheel rigidly fixed on an axle. |
| inclined plane | A device that allows us to increase the height of an object without lifting it vertically. |
| wedge | A double inclined plane. |
| screw | An inclined plane wound around a cylinder. |
| force | A push or pull in a particular directions which produces or prevents motion. |
| newtons | In the metric system, this is how force is measured. |
| power | The rate of doing work or the time rate of doing work. |
| effort | The force you apply to move a load (resistance). |
| resistance | Represented by the force of the load or object being moved. |
| fulcrum | A pivot point of a lever. |
| inertia | Resistance of an object to a change in motion. |
| load | Resistance or what is being moved. |
| compound machine | Two or more simple machines working together. |
| mechanical advantage | Equals = Force of Resistance (load)/Force of effort |
| Archimedian screw | A device invented by Archimedes to lift water. |
| simple machines | Something that changes the amount, distance or direction of force needed to do work. |
| Isaac Newton | The scientist who stated the laws of motion. |
| gears | toothed wheels and axels |
| lever | A rigid bar that is free to rotate about a point called a fulcrum. |
