Continental Drift Crossword

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Across
  1. 4. proposed the Theory that all the continents were once joined together
  2. 5. Contributed heavily in the theory of plate tectonics
  3. 6. the usual process at work at divergent plate boundaries, leading to the creation of new ocean floor
Down
  1. 1. Theory proposed by Alfred Wegener
  2. 2. Supercontinent that was formed with continental drift millions of years ago
  3. 3. heat-driven cycles that occur in the air, ocean, and mantle