Earthquakes crosswords puzzle

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Across
  1. 5. verb that desribes the movement of two plates when they face one another
  2. 6. measurement of the strength of a seism
  3. 9. movement of rapproachement of two tectonic plates
  4. 11. new earthquakes after a seism
  5. 14. released during a seism when rocks break suddenly
  6. 16. powerful vibrations produced by a seism
  7. 21. the San Andrea’s one is the most famous
  8. 22. point on the Earth’s surface directly vertically above the hypocentre
  9. 23. they make the mantle move
Down
  1. 1. synonym of seism
  2. 2. land relief due to collision between two plates
  3. 3. movement of plates that move away from one another
  4. 4. middle layer of the Earth made of rocks that form a type of solid paste
  5. 7. vibrations following an earthquake
  6. 8. plates, large pieces on the Earth’s surface that move several centimeters per year
  7. 10. the centre of the Earth
  8. 12. point at which the seism originates
  9. 13. people who studies seism
  10. 15. synonym of earthquake
  11. 17. movement of plates that sink below another
  12. 18. upper layer of the Earth
  13. 19. gigantic wave formed when a seism occurs in the sea
  14. 20. our planet