simple machine and force and energy

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Across
  1. 2. is formed when two inclined planes are joined
  2. 5. is the energy possessed by an object due to its position and motion
  3. 8. a pull or push is called
  4. 11. work either by changing the direction of force or by reducing the effort needed.
  5. 13. is a sloping or a slanting surface that connects a lower level to higher level.
  6. 15. energy we get from the moving wind
  7. 16. in second class lever located between fulcrum and the effort
  8. 17. categorized in 3 types
  9. 20. can move an object
  10. 21. force that pushes objects towards upside
  11. 23. is the force that attracts objects towards the centre of earth
Down
  1. 1. ability to do work
  2. 3. has many grooves
  3. 4. consist of a wheel that has grooves around it.
  4. 6. made up of two or more simple machine
  5. 7. energy produced from the heat of the earth.
  6. 9. force excerted by muscles
  7. 10. are device or tools that make our work easier
  8. 12. force are the force that are in contact with each other
  9. 14. energy is the energy we get from sun
  10. 18. in third class lever located between the fulcrum and load
  11. 19. in first class lever is located between the effort and load
  12. 22. types of pulley