Simple Machines

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Across
  1. 3. Plane consisting of a sloping surface, used for raising heavy bodies.
  2. 4. a circular device that rotates on an axle and is used to facilitate movement or transportation by reducing friction between surfaces.
  3. 6. a basic mechanical device that consists of a rigid
Down
  1. 1. simply an inclined plane around a cylinder.
  2. 2. a wheel that carries a flexible rope, cord, etc on its rim
  3. 4. simply a triangular tool, often made of metal, wood, etc
  4. 5. a central shaft or rod on which a rotating wheel/wheels that revolves.