Heavy Machines

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Across
  1. 3. Graders have ____ axles.
  2. 5. Name a large machine that is used to move heavy objects weighing much more than the crane itself.
  3. 7. Bulldozers have a huge metal ____ at the front of the machine to move soil, sand or rubbish.
  4. 8. Name a heavy machine that is used to dig out soil or move massive amounts of rock. Some have enormous buckets.
  5. 9. There is a large claw at the back of the bulldozer called a _______.
Down
  1. 1. Name a powerful, special type of tractor with metal tracks for driving over rough, uneven ground.
  2. 2. People who use these heavy machines need to have _______ _______ so they can operate them safely.
  3. 4. Name a heavy machine that is used to flatten the surface of a road or block of land.
  4. 6. A fixed crane is put on a _____ beside a building, so that large metal beams or blocks of concrete can be hoisted up the side of the building.