Earthquakes and volcanoes

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Across
  1. 4. the powdery residue of matter that remains after burning
  2. 5. an instrument that is used for measuring the strength of earthquakes
  3. 7. plate with land on the surface
  4. 8. plate with an ocean on the surface
  5. 12. melting
  6. 13. melted
  7. 15. inside of the world
  8. 16. the strength of an earthquake, measured with numbers from 1 to 10, where 10 is the most powerful
  9. 17. molten rock on the earth`s surface
  10. 18. the point on the earth`s surface above where an earthquake forms
Down
  1. 1. is a series of water waves caused by the displacement of a large volume of a body of water
  2. 2. heated water underground rises to the surface due to pressure
  3. 3. shaking caused by an earthquake
  4. 6. where plates meet
  5. 9. is the result of a sudden release of energy in the Earth's crust
  6. 10. a small earthquake that happens after a bigger one
  7. 11. an opening in the surface or crust of the Earth
  8. 13. molten rock insinde the earth
  9. 14. a layer of molten rock underneath the crust
  10. 19. it is the outermost major layer of the earth, ranging from about 10 to 65 km in thickness worldwide. The uppermost 15-35 km of crust is brittle enough to produce earthquakes