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    • Insects
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    • Human Body >
      • Heart and Lungs
      • Brain
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      • The 5 Senses
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    • The Moon
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    • Rocks and Minerals
    • Soil and Erosion
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    • Ramps
    • Sink and Float
    • Sound
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Simple Machines

6 Simple Machines

Pulley.   A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.
Wheel and Axle. A wheel with a rod, called an axle, through its center lifts or moves loads.
Screw. A screw is an inclined plane wrapped around a pole which holds things together or lifts materials.
Inclined Plane. An inclined plane is a slanting surface connecting a lower level to a higher level.
Wedge. A wedge is an object with at least one  slanting side ending in a sharp edge, which cuts material apart.
Lever. A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads.
                                                                             From http://www.mikids.com/Smachines.htm
Basics of Simple Machines


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