Across
- 4. Body of salt water surrounded almost entirely by land
- 5. Vast treeless plains with permafrost and small, low plants
- 6. Deeper part of a river or harbor
- 10. Large body of ice that moves across the Earth's surface
- 11. Ring-shaped island formed by coral buildup on the rim of an underwater volcano
- 14. Piece of land that is surrounded by water on three sides
- 15. Underground hollow often having an opening in the side of a hill or cliff
- 17. Dry areas of land, desolate, waterless, and without vegetation
- 18. Deep narrow valley with high steep walls
- 20. Shallow pool of water at the center of an atoll
- 21. Large, continuous body of salt water
- 23. Part of land that rises noticeably above the rest of the land
- 24. Body of water completely surrounded by land
Down
- 1. Sandy, pebbly or rocky shore of a body of water
- 2. Densely overgrown land with tropical vegetation
- 3. Lowland region saturated by water
- 7. A group of closely scattered islands
- 8. An area of a sea or ocean partially enclosed by land, larger than a bay
- 9. Area of barren land with roughly eroded ridges and peaks
- 12. In deserts and on beaches, windblown sands that have formed hills
- 13. Body of water partially enclosed by land with a wide outlet to the ocean
- 16. Triangular section of land built up at a river's mouth
- 19. Flat or gently rolling lands
- 22. Point of land projecting into a body of water
