Layers of Earth Vocab

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