Fluvial Landforms Etc Flashcards
An area of land from which a stream gets all of its water supply
Drainage Basin
Three types of drainage basin
Radial, trellis, dendritic
Drainage pattern that has treats meeting at 90 degrees - created by layers of hard and soft rock
Trellis
A spike like drainage pattern. Flows away from the summit of some of volcano in all directions
Radial
A drainage pattern created along uniform layers of rock hardness
Dendritic
During a flood a stream overflows it’s banks. The land adjacent to a stream created by overflow is called a
Floodplain
Stream_______ are the sloping eyes of a river channel
Gradient
In a meandering river. The erosion takes place along the ________ while deposition takes place along the _______.
Cutbanks, banks
These three factors control stream flow / velocity
Channel shape , bed-traction, and discharge
Streams erode soils and rock material in these four different ways
Solution, abrasion, hydraulic action and attrition
Three types of stream loads (eroded material )
Solution , suspension, and bed load
All sedimentary material deposited by streams is called
Alluvium
A ____ is formed when a stream flows into the ocean and deposits it’s load forming new lands
Delta
Inverted cone delf
Arcuate
Delta that looks like a tooth
Cuspate
Deltas that look like an estuary
Estuarine
Deltas that have many distributaries cut through river deposits
Birds foot
Solution load :
Contains dissolved particles and ions and minerals
Suspended load
Consist of fine slits and clays carried in the middle of stream channel
Bed load
Consists of gravel and couplers that are transported at the bottom of a stream channel because of their weight
A stream flows scrim a steep mountain front into a flat plain and it loses its velocity and deposits material in fan shape
Alluvial fan
A human activity that benefits from a stream flooding and the deposition of rich sediments
Agriculture
What is a abrasion
A material being transported wears away at surface over time
What is attrition
Rocks and pebbles are carried in flow of river and repeatedly knock into eachother, causes rocks to break and only get smaller
What is hydraulic action
A force of water crashing material to be dislodged and carried away by the sea .
Solution
Solids dissolving in a liquid