Natural
Across
- 1. A wetland area where the ground is often saturated with water.
- 4. A place where water drops down from a high cliff or rock.
- 6. A dense forest found in tropical areas, with high annual rainfall.
- 8. A huge mass of ice that moves very slowly down a mountain or through a valley.
- 12. A mountain that can explode, spewing out lava and ash.
- 13. A piece of land completely surrounded by water.
- 14. A low area of land between hills or mountains, often with a river running through it.
- 15. A vast body of saltwater that covers more than two-thirds of the earth's surface.
Down
- 2. A wide open area filled with grasses, often home to many types of wildlife.
- 3. A very dry area where few plants can grow, often covered by sand.
- 5. A large body of water surrounded by land.
- 7. A large area covered with trees and other plants.
- 9. A deep, narrow valley with steep sides, often carved by a river over millions of years.
- 10. A high, steep rise in the earth, much taller than a hill.
- 11. A stream of water that flows across the land and empties into a sea or lake.