Simple Machines.

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Presentation transcript:

Simple Machines

Simple Machines Simple machines help us do work. Machines make work easy. There are 6 kinds of simple machines.

The 6 kinds of simple machines are: Inclined plane Wedge Screw Wheel and axle Pulley Lever

Inclined Plane An inclined plane is like a flat board that is higher on one end. A person on a wheelchair would use an inclined plane. I use one on the playground – the slide, of course!

Wedge A wedge pushes things away from each other. A wedge is 2 inclined planes put together like a V. Wedges split things. I use wedges every day – forks and knives, of course!

Screw A screw winds and winds around itself. Screws hold things together and can make them go up and down. I used screws - to build my birdhouse, of course!

Wheel and axle A wheel and axle is a pole and a circle. The pole lets the circle turn around it. You can use a wheel and axle to move things. I use a wheel and axle every day – my skateboard, of course!

Pulley The pulley is like a wheel and axle with a rope instead of a pole. If you put a heavy thing on the rope and wind the other end around the wheel, you can pull the heavy thing. We use a pulley at school every day – to raise our school flag, of course!

Lever A lever is a board on top of something else. You can balance things or move them. Cave men used levers to move rocks. I use a lever every day – to open my can of soda, of course!

They make my life easy and fun! Simple machines are GREAT! They make my life easy and fun!