💥 PLATE TECTONICS 💥

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Across
  1. 1. a device used to measure the vibrations of an earthquake
  2. 3. when one tectonic plate moves under the other
  3. 4. the liquid layer of the core of the earth
  4. 6. where two tectonic plates are separating from each other
  5. 10. when the earth begins to shake uncontrollably due to seismic waves
  6. 11. a well known tectonic belt where many of the world's volcanoes are located
  7. 12. the outermost and thinnest layer of the earth
  8. 14. the theory that the continents are constantly drifting away from each other
  9. 16. boundary where two tectonic plates meet
  10. 18. a vent in the earth that erupts
  11. 19. the layer of the earth in between the crust and the core
  12. 20. the bottom of the ocean
Down
  1. 2. where oceanic plates sink down into the earth
  2. 5. the exact middle point of an earthquake
  3. 7. the scale at which the intensity of an earthquake is measured
  4. 8. where two tectonic plates slide past each other horizontally
  5. 9. the large landmass that used to be every continent combined
  6. 13. the solid innermost layer of the core of the earth
  7. 15. a place where two tectonic plates slide past each other
  8. 17. the movement of the Earth's crust