Development of a Theory

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Across
  1. 2. When magma erupts onto the Earth's surface it turns into ___.
  2. 6. Deepest part of the ocean.
  3. 8. Mountain range forming in the middle of the ocean.
  4. 10. This was the theory that all continents were together and then eventually separated.
  5. 12. Giant supercontinent.
  6. 13. The process by which oceanic crust continuously forms along mid ocean ridges.
Down
  1. 1. The new technology developed in the 1940's allowing scientists to map the sea floor.
  2. 3. Rocks near the mid ocean ridges are ____.
  3. 4. By matching _____, scientists figured out South America and Africa were probably once connected.
  4. 5. Molten rock below Earth's surface.
  5. 7. Giant rock slabs that make up Earth's surface
  6. 8. Scientist who discovered the mid ocean ridges using sonar sounds.
  7. 9. The scientist who came up with the idea of Continental Drift
  8. 11. Rocks further from the mid ocean ridges are ____.\