Rock and tectonic plates

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Across
  1. 4. the rigid outer layer of Earth made of crust and upper mantle
  2. 6. a huge landmass made of all continents joined together
  3. 8. a large ocean wave usually caused by an underwater earthquake
  4. 11. molten rock that has erupted onto Earth’s surface
  5. 13. wave energy waves that travel through Earth during an earthquake
  6. 15. core the liquid layer around the inner core made mostly of metal
  7. 16. plate a large moving piece of Earth’s surface
  8. 18. molten rock found beneath Earth’s surface
  9. 19. the study of rocks, Earth, and how it changes
Down
  1. 1. the breaking down of rocks by wind, water, or temperature
  2. 2. rock the original rock that soil or other rocks form from
  3. 3. the process where minerals form solid crystals as they cool
  4. 5. preserved remains or traces of ancient plants or animals in rock
  5. 7. movement of heat in a liquid or gas that causes currents
  6. 9. sudden shaking of the ground caused by plate movement
  7. 10. the point on Earth’s surface directly above where an earthquake starts
  8. 12. an opening in Earth where lava, ash, and gases escape
  9. 14. the thin outer layer of Earth where we live
  10. 17. core the solid, hottest part at the very centre of Earth