Simple Machines

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Across
  1. 3. A round wheel and a rod that turn together.
  2. 4. A wheel with a rope used to lift things.
  3. 5. Basic tools that make work easier.
  4. 6. A stiff bar that moves on a point to lift or push.
  5. 7. An inclined plane wrapped around a cylinder.
Down
  1. 1. A flat surface set at a slant, like a ramp.
  2. 2. A tool with a sharp edge used to split or cut.