Plate tectonics

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Across
  1. 3. A type of seismic wave
  2. 4. Molten rock found beneath the Earth's surface
  3. 6. The process of mountains forming
  4. 8. The layer between the crust and core
  5. 9. A boundary where plates collide
  6. 10. The outermost solid shell of Earth
Down
  1. 1. A supercontinent that existed millions of years ago
  2. 2. The study of earthquakes
  3. 5. A break in the Earth's crust
  4. 7. Earth's solid, innermost laye