Plate tectonic

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Across
  1. 2. / Anything to do with earthquakes
  2. 4. volcano / Not erupted for many years but could still erupt
  3. 6. / Molten rock on the Earth's surface
  4. 7. / shaking caused by an earthquake
  5. 10. / The name of the margin when two plates are spreading from each other
  6. 11. / The name of the name of the instrument which record the shaking of the Earth
  7. 13. / molten rock inside the Earth
  8. 14. movement / What kind of motion does the transform margin has?
Down
  1. 1. volcano / Not expected to erupt again in the future
  2. 3. crust / 20-60 km thick
  3. 5. boundary / plates meting each other
  4. 8. / a layer of molten rock (magma) underneath the crust
  5. 9. / Synonym for subduction
  6. 12. plate / plate, usually between 8 and 25 km thick
  7. 15. volcano / Erupted recently and is expected to erupt again