Continental Drift vs Plate Tectonics

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Across
  1. 4. Vibrations in the ground caused by Earths crust moving
  2. 7. A lowland region that forms where Earth's tectonic plates move apart, or rift
  3. 8. Evidence in the changing climates during the past
  4. 12. The liquid layer of the Earth's core that lies beneath the mantle and surrounds the inner core
  5. 17. Earth's lithosphere is broken up into how many major plates
  6. 18. When one plate gets pushed under another and where volcanoes form
  7. 19. The place where two plates move apart or diverge
  8. 20. The soft layer of the mantle on which pieces of the lithosphere move
  9. 21. The boundary between two tectonic plates that are sliding past each other horizontally
Down
  1. 1. The thin, outermost layer of the Earth
  2. 2. Molten rock in the Earth's crust
  3. 3. Evidence in the layers of rocks across continents
  4. 5. How many main pieces of evidence did Wegener find to support his theory
  5. 6. The cause of seafloor spreading
  6. 9. The theory that continents can drift apart form on another and have in the past
  7. 10. How many people believed Wegener's theory when he was alive?
  8. 11. Was the first person to propose the theory of continental drift
  9. 13. The movement or study of the movement of Earth's crust
  10. 14. The outermost, rigid layer of the Earth that consists of the crust and the rigid upper part of the mantle
  11. 15. The solid, dense center of the Earth
  12. 16. Wegener's name for the super continent that existed over 250 million years ago