Across
- 3. A large natural stream of water flowing to the sea, a lake or other body of water.
- 5. A large hole that was formed by natural processes in the side of a cliff, hill or under the ground.
- 6. A large mass of ice formed from falling snow slowly moving down a mountain
- 8. A mountain with an opening in the earth's crust through which molten lava, ash, and gases are ejected
- 9. A piece of land completely surrounded by water.
- 11. The land that gets covered by water from a stream or river during a flood.
- 14. A large group of islands.
- 18. A curve or loop in a river.
- 19. A mound, hill or ridge of windblown sand.
- 20. Large area of level or nearly flat land.
Down
- 1. A flow of water falling from a height, formed when a river or stream flows over steep cliffs or rocks.
- 2. Gently sloping shore next to a body of water washed by waves or tides, often covered by sand and pebbles.
- 4. A fan shaped deposit at the mouth of a river.
- 7. High, uplifted area with steep slopes.
- 10. A large body of water surrounded by land.
- 12. nearly level area that has been uplifted.
- 13. A low area between hills and mountains, often where a river flows.
- 15. A raised area of land that is smaller than a mountain
- 16. A body of water smaller than a lake.
- 17. A deep valley with steep walls shaped by a river.
