Layers of Earth Vocab

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Across
  1. 6. the theory that continents can drift
  2. 9. name for lava before it reaches earths surface
  3. 11. rigid movable sections of the lithosphere
  4. 12. point on earths surface directly above an earthquakes focus
  5. 15. a boundary where two plates slide past each other
  6. 18. a point in the earth where movement along a fault creates an earthquake
  7. 19. the solid innermost layer of the earth
Down
  1. 1. scale used to measure the magnitude of earthquakes
  2. 2. undersea mountainous ridge and divergent plate boundary the circles the earth
  3. 3. a boundry where two tectonic plates move apart
  4. 4. a shock wave caused by an earthquake
  5. 5. size of an earthquake measured by the amount of energy released
  6. 7. molten rock that erupts from earth
  7. 8. outer layer of earth composed of crust and outer mantle
  8. 10. boundary where two tectonic plates meet
  9. 13. a crack in a rock
  10. 14. the thin outermost layer of the earth
  11. 16. when one plate goes under another
  12. 17. mostly molten layer of earth below the crust