Plate Tectonics / Earthquakes / Volcanoes

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Across
  1. 3. The part of the pizza that gets left behind
  2. 5. The area around the Pacific where many earthquakes and volcanoes are located. Sung about by Johnny Cash
  3. 7. "Hot Stuff" on Earth's surface
  4. 8. When one plate sinks beneath another plate
  5. 10. A fine particulate that buried the people in Pompeii
  6. 12. A current caused by rising heat fluids
  7. 14. The earthquake that happens AFTER the main earthquake
  8. 15. The strongest earthquake ever recorded was in this country
  9. 16. The device that measures the strength of an earthquake
  10. 18. A person who studies the composition of the Earth
  11. 19. Relating to the heat inside of the Earth
  12. 23. Sudden shaking of the ground caused by seismic waves passing through rock
Down
  1. 1. Volcanic smog
  2. 2. A small earthquake that barely shakes the ground - also a line of Ford trucks
  3. 4. This is triggered by large undersea earthquakes. Wave as it goes by
  4. 6. When you mess up, it is your ________.
  5. 7. A landslide of rapidly melting snow and ice and dirt triggered by a volcano
  6. 9. Look up the 'Sid shuffle' (Also the name of a Rolling Stones song)
  7. 11. Large crack in the ground - often from seismic activity
  8. 13. The __________ scale is used to measure the strength of an earthquake
  9. 17. The stuff between Earth's core and its crust
  10. 20. Melted rock beneath Earth's surface
  11. 21. A volcano that has not erupted in a long time is this
  12. 22. Two plates that split apart