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A Machine That Uses Friction: Bicycle- The chains on the bike move the wheels creating friction so the person is transported slowly of fast depending on how much power you pedal. !!!!!!!

A machine that reduces friction Ball Bearing- Eight concave sided spindles rotating on their own axis preventing sideways movements by the balls.

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A Machine That Reduces Gravity Pulleys- Leonardo invented various types of pulleys, some simple and others extremely complex. In this model one person can lift a heavy load without them straining themselves due to the distribution of the weight

A Machine That Uses Gravity Parachute- Using gravity when a person uses a parachute the linen pulls the air into the pyramid slowing down their fall.

FAV MACHINE

Spring powered car- Using springs and friction to move the car. Also, I think that Leo was WAY ahead of his time building a prototype of a car without electricity or horses.

Thanks to Mrs. Pratt and Mrs. Gilmore for taking us to this wonderful exhibition Copyright 2014

Pictures from private source Special thanks to my brain for remembering this without my notebook

And to Mrs. Jones for letting me have extra time !!!!!

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