Plate Tectonics

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Across
  1. 4. Layer of Earth on which tectonic plates float
  2. 7. The rigid outer layer of Earth
  3. 8. German scientist who proposed continental drift
  4. 9. Evidence used by Wegener: ___ found on multiple continents
  5. 10. Supercontinent proposed by Alfred Wegener
  6. 11. Underwater mountain chain formed by diverging plates
Down
  1. 1. When one plate sinks beneath another
  2. 2. Theory that Earth’s continents have moved over time
  3. 3. Movement of molten rock in the mantle that drives plate motion
  4. 5. Large sections of the Earth’s crust that move slowly
  5. 6. Process that creates new ocean floor at mid-ocean ridges