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Machines Vocabulary

     Simple machines   Inclined-Plane    Screw     Wedge    Lever     Pulley   Wheel-and-Axle  
Across
An inclined plane wrapped around a center rod. An example is a spiral staircase.
Tools that make difficult tasks easier by changing the direction of the force or the amount of force needed to do something.
A simple machine used to move objects across a distance using a round part and a long part. Cars have this design.
A plank that rests on something underneath and moves up and down. An example is a seesaw.
A wheel and rope that can change the direction of a force. An example is a flagpole uses this to raise the flag.
Down
A simple machine that has a gently sloped surface so it can be used to move objects upwards with less force. An example is a ramp.
A simple machine that gets thinner at one end that is used to split material such as wood. An example is knife.