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Across 4. the number of dead in a natural disaster 7. scale for measuring magnitude of an earthquake 8. permanantely inactive volcano 9. the word used to describe volcanic ash 10. a minor eathquake 11. a minor quake after the main one 13. violent shaking of the ground caused by upsetting of the tectonic 14. a mountain (usually near a fault line) that is capable of ejecting volcanic ash or lava 16. the word to describe the plates that divide the world underground 17. the thickness of lava 18. pulverised volcanic rock 19. the ejection of lava or ash from a volcanic peak

Down 1. scale o measure shaking of an earthquake 2. temporarily inactive volcano 3. the inside interior of the crater 5. a massive wave caused by tectonic movement 6. the hole of the volcano 12. the line where two tectonic plates meet 15. molten rock from undergound