Across
- 2. A vast plain formed by alluvial river deposits at the foot of a mountain range.
- 5. A mountain created when a block of crust is pushed upward by faulting.
- 10. Large natural elevations of the Earth's surface with steep sides.
- 12. All the large scale forces that act to deform the Earth's crust, including folding and faulting.
- 15. A long, narrow valley formed by a fault system.
- 18. A large plateau, flat-topped landform created by successive lava flows.
- 19. Broad, regional uplift or subsidence of continents.
- 20. The process of mountain-building, characterized by folding and faulting.
- 21. A mountain that has been left standing after a long period of erosion.
- 22. A piece of low-lying land reclaimed from the sea or a lake.
Down
- 1. Deep, narrow depressions on the ocean floor.
- 3. A type of plain formed by uplift or subsidence of land.
- 4. A down-dropped block of land between two block mountains.
- 6. An upward fold of rock layers in the Earth's crust.
- 7. Forces that originate from within the Earth and cause crustal movements.
- 8. Forces that originate on the Earth's surface, such as wind, water, and ice.
- 9. An uplifted block having flat summit.
- 11. A downward fold of rock layers in the Earth's crust.
- 13. A plateau, high landmass that is surrounded by mountains.
- 14. Any natural feature of the Earth's surface.
- 16. Another name for a plateau.
- 17. Long, narrow chains of hills or mountains.