Earthquakes crosswords puzzle

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