Continental drift theory

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Across
  1. 3. - A deep valley formed as tectonic plates move apart, often found along mid-ocean ridges.
  2. 4. - Remains or impressions of prehistoric organisms found on different continents, supporting the theory.
  3. 8. - Circular movements of molten rock within the Earth's mantle that drive plate movement.
  4. 11. - A supercontinent that existed millions of years ago, where all Earth's landmasses were joined together
  5. 12. - Changes in Earth's magnetic field, recorded in oceanic crust, that support plate movement.
  6. 14. - The semi-fluid layer beneath the lithosphere on which tectonic plates move.
  7. 15. - Large sections of Earth's crust that move over the mantle.
Down
  1. 1. - A mountain range in the Atlantic Ocean where seafloor spreading occurs.
  2. 2. - The process by which one tectonic plate is forced under another at convergent boundarie you can use these terms to create your crossword puzzle as described in the previous steps.
  3. 5. - The process by which new oceanic crust forms as magma rises at mid-ocean ridges.
  4. 6. - The rigid outer part of the Earth, consisting of the crust and uppe mantle.
  5. 7. - The southern part of the supercontinent Pangaea.
  6. 9. - The theory that continents have moved over geological time to their current locations.
  7. 10. - The scientist who proposed the theory of continental drift.
  8. 13. - The northern part of Pangaea that eventually split into continents.