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Simple Machines
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edHelper.com Simple Machines |
Simple Machines: The Screw |
| edHelper's suggested reading level: | grades 3 to 4 | |
| Flesch-Kincaid grade level: | 3.06 |
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Simple Machines: The Screw
By Brandi Waters |
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1 There are six simple machines. They make it easier for us to do work. The screw is one kind of simple machine. Screws help us hold things together. A screw is a long post that is wrapped with metal threads. A screw is actually a kind of inclined plane. It is an inclined plane that is wrapped around a cylinder. If you follow the threads on a screw, they will form a long ramp from the bottom of the screw to the top of the screw. The threads on a screw may be close together. .....