Across
- 3. A smaller river that flows into a larger river
- 5. An area of slow-moving swampy water
- 7. A wetland that supports mostly grass
- 9. A constantly wet lowland that supports trees
- 13. A huge body of salt water that covers the planet
- 16. A body of water that runs through land
- 19. A collection of islands
- 22. Flat highlands that receive little water
- 27. Barren dry land with high winds and sand
- 28. A hill of loose sand
- 29. A steep and narrow valley usually rocky
- 30. Water spilling over an edge, usually a cliff
- 31. Large flat grasslands
- 32. A tall steep rocky formation
- 36. A large body of salt water surround by land
- 37. Large hollow stone formation that can erupt
Down
- 1. An area that receives no rainfall and has little life
- 2. Where many rivers meet to flow into the ocean
- 4. A small piece of land rising from the water
- 6. A small area of water and vegetation in a dry area
- 7. A large rocky and snowcapped formation
- 8. A hollow formation in rock
- 10. a small still body of water
- 11. The flow of water influenced by the moon
- 12. A gently sloping shoreline made of sand
- 14. Enormous land masses that make up most land on Earth
- 15. The direction water is flowing
- 17. A portion of a river that has large waves
- 18. A structure that blocks the flow of water
- 20. A large body of fresh water surrounded by land
- 21. An enormous mountain of ice
- 23. A narrow strip of water that cuts into the land
- 24. A tube that erupts with high pressure water
- 25. A lowland between two hills or mountains
- 26. A manmade channel for water
- 27. A steep rocky cliff overlooking water
- 31. A narrow strip of land that extends into the ocean
- 33. A large area covered by trees and dense vegetation
- 34. A tall rock pillar formed by erosion
- 35. A very narrow low area with steep rocky sides