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Simple Machines
A machine is a tool used to change a force. It makes work easier.
| Term | Definition |
|---|---|
| Inclined Plane | A slanted plane resting on a triangular base. It has no moving parts. It is used to move things from low to high. The steeper the incline the more effort is needed. |
| Wheel and Axle | A simple machine in the shape of a circle that turns on a rod. The rod is called an axle. The job of the wheel and axle is to move something. |
| Gears | Gears are an example of a wheel and axle, but the wheel has teeth to catch at the teeth of another gear. |
| Screw | An inclined plane wrapped around a tube. It is use to help things together, make holes, or to lift things. |
| Fulcrum | A ____________ is what the lever rests on and turns or pivots on. |
| Pulley | A simple machine used to move an object up and down or side to side. It has a wheel with a grove for the rope or chain to pull the load. A pulley is a type of 1st class lever. |
| Lever | It multiplies the effort to make lifting and moving things easier. It has three parts; load, the effort, and the fulcrum. |
| Wedge | Two inclined planes put together designed to hold things in place or to cut to split something apart. |
| Effort | The ___________ is the thing that is pushing or pulling the load. |
| Load | The ___________ is what is being lifted or moved, it can also be called the resistance. |
| Work | _________ is done when a force acts on an object and moves it over a distance. |
| Machine | __________ provided ways to get food, shelter, and protection, and ways to make work easier. |
| Acceleration | ____________ is speeding up, as when a ball rolls down a hill. |
| Deceleration | _____________ is slowing down, as when the brake is applied in a car. |
| Mechanical Forces | ___________ are a force created by the movement of an object over a distance. These forces help us to do work. |
| Advantages of using simple machines | The _____________________ of using simple machines are that they make work easier for us to do. |
| Speed | _________ is the measure of how far something travels in a certain period of time. |
Created by:
twaltner
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