Across
- 4. A very dry region that receives little precipitation and has sparse vegetation.
- 8. One of the vast bodies of salt water that cover most of Earth's surface.
- 9. An opening in Earth's crust where magma, ash, and gases can reach the surface.
- 11. A body of fresh water surrounded by land.
- 12. A deep, narrow valley with steep sides, often carved by a river over a long period of time.
Down
- 1. A large area of land covered mainly by trees and other vegetation.
- 2. A hot spring that periodically erupts, shooting hot water and steam into the air.
- 3. A piece of land surrounded by water on three sides and connected to a larger landmass.
- 5. A large, steep landform that rises high above the surrounding land.
- 6. A natural stream of flowing water that usually moves toward a lake, sea, or ocean.
- 7. A piece of land completely surrounded by water.
- 10. A large body of salt water that is smaller than an ocean and is often partly enclosed by land.
