Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
Runoff |
Precipitation exceeds soils capacity to hold water |
|
|
Sheet wash |
Initial pour as a thin sheet down a slope |
|
|
Rill |
Channels of sheet wash |
|
|
Gullies |
Strong channels |
|
|
Epemeral flow |
Usually dry river beds |
|
|
Perennial flow |
Carries water year round |
|
|
Drainage Basin |
Land area where water drains to a common stream. (Also called watershed or catchment) |
|
|
Solution |
Smallest insoluble solids being carried by suspension. |
|
|
Saltation |
Large particles too heavy to be carried by buoyancy, so they bounce along the surface. |
|
|
Traction |
Big rocks that slide along the bottom of the river |
|
|
Bar |
Accumulation of sediments on the streambed. |
|
|
Alluvium |
General term for all stream deposits. |
|
|
Straight channels |
Parallel linear banks. Usually made by people. |
|
|
Braided channels |
Streams carrying lotsa sediment relative to its discharge. Large bars cause the stream to seperate then rejoin later. Characterized by coarse settlements. |
|
|
Meandering channels |
Broad sweeping bends. High lateral erosion. Found in flat humid areas. Characterized by small, fine sediments. |
|
|
Upper course |
Stream flow in contact with bedrock. Gravity causes water to flow downstream. Vertical erosion and v shaped valleys. |
|
|
Middle course |
Moderate gradient. Moderately smooth channel bed. Meandering with floodplains. |
|
|
Lower course |
Almost flat. Flow by stream energy rather than gravity. Large meander and wide floodplains. |
|
|
Deltas |
Stream flows into larger body of water. Deposits lots of sediments. |
