River Flashcards
1
Q
Whats is Stream?
A
any flowing body of water
2
Q
What is River?
A
major branch of large stream system
3
Q
What is Channel?
A
The stream passage way
4
Q
What is Load?
A
The sediment carried by the stream
5
Q
What is Discharge?
A
The quantity of water passing a give point
6
Q
Laminar Flow?
A
- straight or gently curved streamlines that run parallel to one another without mixing or crossing
- can carry only small, light silt sized particles
- low velocities
7
Q
Turbulent Flow?
A
- complex pattern of movement with streamlines crossing and forming swirls and eddies
- can carry pebbles and cobbles
- higher velocities
8
Q
Suspended Load
A
- all the material temporarily or permanently suspended in the flow
- silt and clay
9
Q
bed load
A
- the material carried by the stream along its bottom by sliding and rolling
- gravel and sand (saltation)
10
Q
Saltation
A
jumping of sands grains as they are lifted off the bottom, carried a short distance and then settle out.
11
Q
List the drainage patterns.
A
- Dendritic
- Parallel
- Trellis
- Rectangular
- Radial
12
Q
Meandering Rivers
A
- consist of a single main channel that bends and loops
- Low gradient
- Oxbow Lakes
13
Q
Braided Rivers
A
- have numerous channels that repeatedly divide and merge
- high sediment load
- steeper gradient than meandering
- rapid and frequent variations in water discharge
- erodible banks
14
Q
List surficial processes
A
- erosion
- transportation
- deposition on the Earth’s surface (or near surface)
15
Q
List Surfical proecess Agents
A
- running water (streams and drainage systems)
– groundwater
– glaciers
– gravity (mass wasting)
– wind
