Plate Boundaries & Earth's Layers

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Across
  1. 4. Colliding with each other.
  2. 8. Caused by transform boundaries.
  3. 9. Separating.
  4. 10. The layer after the innermost layer.
  5. 11. Had the idea for continental drift.
  6. 13. Used to determine if a layer is liquid or solid.
Down
  1. 1. The innermost layer.
  2. 2. Used to record seismic waves.
  3. 3. Constantly moving rigid plates.
  4. 4. The thinnest layer.
  5. 5. The layer before the outermost layer.
  6. 6. Rubbing against each other.
  7. 7. Had the idea of seafloor spreading.
  8. 12. The continent that fits most with South America.