Across
- 6. Occurs when rocks or rock fragments fall freely through the air.
- 7. The volume of water flowing past a certain point in a given unit of time in a stream.
- 10. The once narrow V-shaped valley is changed into a U-shaped valley.
- 11. A mixture of clay, silt, and sand.
- 12. Windblown silt that blankets the landscape.
- 13. Plants absorb water and release it into the atmosphere.
- 17. A period of time when much of Earth's land is covered in glaciers.
- 18. Also known as horizon A.
- 20. A stream in a board, flat-bottomed valley that is near its base level often develops a course with many bends.
Down
- 1. An accumulation of sediment formed where a stream enters a lake or ocean.
- 2. The movement of surface water into rock or soil through cracks and pore spaces.
- 3. Ice masses that slowly advance down valleys that were originally occupied by streams.
- 4. Weathering produces a layer of rock and mineral fragments.
- 5. Part of a stream's load of solid material that is made up of sediment too large to be carried in suspension.
- 8. The slowest type of mass movement.
- 9. During a flood the river overflows its banks into the plain.
- 14. The lowest elevation in a particular area that remains covered in snow year round.
- 15. A block of material moves suddenly along a flat, inclined surface.
- 16. A naturally formed underground chamber.
- 19. The part of the regolith that supports the growth of plants.
