Simple machines.pptx;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

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1. Ch.11 L.4 Simple Machines

2. If you want to move an object which tool you will use?

3. You will be able to understand the meaning of simple machine.

4. A machine is a tool that can make work easier 1- Wheel and axel in a wagon to move heavy things wagon

5. Simple machine is a tool with few or no moving parts 2 - screw to hold things together It is an inclined plane wrapped around a cylinder. screw 3- Wedge is a tool to push things apart It is an inclined plane that is used to separate two objects. 4- Pulley Move an object up, down ,or sideways It is a wheel and axel with a free moving cord. Teeth as a wedge

6. 5- L ever to L ift 6- Inclined planes Flat and higher at one end than at the other Lever to move things Lever to lift Shovel is a lever Arms and hands are lever too Tongs are made of tow levers