Earthquakes

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Across
  1. 3. third layer of the earth
  2. 5. innermost layer of the earth
  3. 8. primary wave that travels back and fourth through the earth
  4. 9. controls plate tectonics
  5. 10. tectonic plates slide
  6. 11. second layer of the earth
  7. 12. supercontenint about 225 million years ago
Down
  1. 1. secondary wave that travels in a snake like shape
  2. 2. divide
  3. 4. collide
  4. 6. outermost layer of the earth
  5. 7. where earthquake and volcanoes occur most