Big Machines

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Across
  1. 4. machines that carry concrete
  2. 6. a type of helicopter that is used to lift heavy objects
  3. 7. a machine made of two parts
  4. 8. a type of truck that can carry steel beams and rods
  5. 9. a type of simple machine
  6. 11. large power shovels that dig deep holes
  7. 12. machines that smooth out the roadway
Down
  1. 1. machines that lay the road surface
  2. 2. machines that carry dirt away
  3. 3. large ships that move people
  4. 5. machines that move other things over water by pulling and pushing
  5. 7. machines that move dirt around
  6. 10. machines that are used to dig up dirt and rocks