Geogrophy

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Across
  1. 1. The biggest plate
  2. 5. Violent shaking of the ground
  3. 8. Earth's fifth-largest tectonic plate
  4. 10. Roughly rhomboid, extending between 50°S 70°W and 63°S 20°W
  5. 11. Where two plates move away from each other
  6. 13. Includes much of the continent of Africa, and adjacent oceanic
Down
  1. 2. Mostly oceanic tectonic plate underlying Central America
  2. 3. The third biggest plate
  3. 4. lies beneath the Philippine Sea, to the east of the Philippines
  4. 6. The earth's crust and the large-scale processes
  5. 7. The oldest rocks of the plate are about 50 million years old
  6. 8. Minor tectonic plate in the Northern and Eastern Hemispheres
  7. 9. Where two plates move toward from each other
  8. 12. Vent through which lava, rock fragments