Plate Motion

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Across
  1. 2. An opening made by splitting or separation
  2. 4. An early aquatic relative of reptiles
  3. 6. Second layer of the Earth
  4. 7. A spring that dramatically spews hot water and steam
  5. 8. Molten erupted from a volcano
  6. 9. A long, narrow ditch
Down
  1. 1. Intense shaking of the Earth’s surface
  2. 3. Preserved remains from plants or animals in stone
  3. 4. Molten rock under the Earth’s surface
  4. 5. Large slab of solid rock