simple machines

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Across
  1. 1. A common tool with two blades used for cutting.
  2. 2. A metal rod with threads, used to lift or hold objects together tightly
  3. 3. A sloped surface used to make lifting heavy loads easier, commonly found on trucks.
  4. 4. A slanted tool with a sharp edge, used for cutting or splitting objects.
  5. 5. A simple machine made of a wheel with a rope used to lift heavy objects.
  6. 7. A machine that uses a spiraled shape to hold objects together or move them upwards.
Down
  1. 1. A device that joins papers together by pressing metal pins through them.
  2. 4. A circular object that helps reduce friction and make movement easier.
  3. 6. A rod balanced on a fulcrum, used to lift objects more easily
  4. 8. A heavy object with a slanted surface used to hold things in place or prevent movement