EARTH: ZODIAC ELEMENT

123456789101112131415161718192021
Across
  1. 1. Lava spewing mountain
  2. 6. Flat elevated landform
  3. 7. Large landmass
  4. 8. Dense wooded area
  5. 10. Earth's features and study
  6. 13. Molten rock beneath the surface
  7. 14. Earth's crust movements
  8. 15. Bowl-shaped cavity
  9. 16. Watercourse flowing to seas
  10. 18. Relating to earthquakes
  11. 20. Cold treeless biome
  12. 21. Lowland between mountains
Down
  1. 2. Vast bodies of saltwater
  2. 3. Gaseous layer surrounding Earth
  3. 4. Deep narrow gorge
  4. 5. Arid region with little rain
  5. 9. Slow-moving ice mass
  6. 11. Study of the Earth's structure
  7. 12. Inland bodies of water
  8. 15. Earth's outermost layer
  9. 17. Landmass surrounded by water
  10. 19. High landform with a peak