Plate Tectonics review

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Across
  1. 4. is the theory that Alfred Wegener had that the continents were once all together and slowly moved over time
  2. 7. rocks that move toward each other
  3. 9. rocks move away from each other
  4. 10. when two plates separate forming rift valleys and mid-ocean ridges
  5. 11. the point within the Earth where the earthquake originates
  6. 12. a scientist who discovered the theory of Pangaea
  7. 13. the point on the Earth's surface directly above the focus
  8. 14. measures the intensity or severity of an earthquake
  9. 15. rocks slide past each other
Down
  1. 1. powerful waves that are generated by an earthquake
  2. 2. an instrument that measures and records details of an earthquake
  3. 3. the ________ current is in the mantle layer of Earth
  4. 5. scale measures the strength or magnitude of an earthquake
  5. 6. when two plates collide or push together to form mountains, volcanoes, or island arcs
  6. 7. the idea that continents were once joined then moved apart
  7. 8. when two plates slide past each other forming fault lines and earthquakes