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