Simple machines grade 5

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Across
  1. 3. A simple machines uses _______ to do work
  2. 5. Simple machine used in the catapult mechanism
  3. 6. Tools that make work easier
  4. 8. This was used to attack the fort
  5. 9. The first ever wheel was made out of _______
  6. 10. An example of lever mechanism in the park
Down
  1. 1. Simple machine used to lift stone bricks of the fort
  2. 2. ________ wheel in an amusement park is an example of wheel and axle mechanism.
  3. 4. ______ were used to pull the stone bricks up to the fort using a pulley.
  4. 7. A sloped plane used to lift the flag post to the top of the fort