Across
- 4. Barren wind-blasted and sandy lowland
- 6. A very narrow rocky canyon
- 7. Large body of saltwater surrounded by land
- 8. Sloped sandy shoreline
- 9. The oceanic currents dictated by the moon
- 11. A tall rocky formation with steep sides
- 12. Area of a river that has strong currents
- 16. A group of small islands
- 18. A hollow mountain that can erupt
- 19. Lowland with slow moving swampy water
Down
- 1. Land masses that make all land on Earth
- 2. When water flows over an edge like a cliff
- 3. A steep cliff overlooking water
- 5. A hollow rock formation
- 10. Lowland between two hills or mountains
- 11. A narrow valley with steep rocky sides
- 12. A body of freshwater that runs over land
- 13. Constantly wet lowland with trees
- 14. A smaller river that flows into a larger river
- 15. Large semi-dry flat area with mostly grass
- 17. A man-made water way
