The erosion and transport of rock and sediment by a stream defines the shape and extent of its valley.
V‐shaped valleys and wide valleys with flat floors
are the most common varieties. Downcutting.
What are two types of streams?
- An input stream or an output stream,
- a processing stream or an ordinary stream,
- a character-oriented stream or a byte-oriented stream,
- and may be connected to a variety of sources or destinations.
What are the two types of stream valleys quizlet?
- in solution (dissolved load)
- in suspension (suspended load)
- scooting along the bottom (bed load)
What is stream cut valley?
Downcutting, also called erosional downcutting, downward erosion or vertical erosion is a geological process by hydraulic action that
deepens the channel of a stream or valley by removing material from the stream's bed
or the valley's floor.
What are the different types of stream load?
Stream load is broken into three types:
dissolved load, suspended load, and bed load
(Ritter, 2006).
What is depositional base level quizlet?
Base level.
the lowest point of river to which it can flow
, Bed load. sand, gravel, boulders, or other debris transported by rolling or sliding along the bottom of a stream.
How might a stream channel become braided quizlet?
How might a stream channel become braided?
If a large portion of a stream's sediment load consists of coarse material and the stream has a highly variable discharge
, a stream channel can become braided.
Are streams faster than rivers?
As a
stream flows faster
, it can carry larger and larger particles. … At flood stage, rivers flow much faster and do more erosion because the added water increases the stream's velocity. Sand, silt and clay size particles generally make up the suspended load for a stream (Figure 10.2).
How do you classify a stream?
“
Stream order
” is one way to classify streams. The stream order classification looks like branches on a tree. The initial channel where a small stream first appears is referred to as a first order stream. When two first order streams come together, they form a second order stream.
What are the 4 types of streams?
- Alluvial Fans. When a stream leaves an area that is relatively steep and enters one that is almost entirely flat, this is called an alluvial fan. …
- Braided Streams. …
- Deltas. …
- Ephemeral Streams. …
- Intermittent Streams. …
- Meandering Streams. …
- Perennial Streams. …
- Straight Channel Streams.
What are the characteristics of a stream valley?
Stream valleys in the youth stage are
often V-shaped, with steep sides
, and they do not have any established floodplain yet. They are also characterized by having interrupted stream flow due to boulders, rapids, and waterfalls.
What is the shape of a stream valley?
glacial valley
The commonly
V-shaped
stream valley is converted to a U-shaped valley because the U-shape provides the least frictional resistance to the moving glacier. Because a glacier has a much greater viscosity and cross section than a river, its course has fewer and broader bends, and thus, the valley…
How do streams become graded?
The
factors that make a river larger and the factors that make it smaller balance out
. This is when it becomes a graded stream. … Well, the faster, thinner and steeper parts of the stream erode a lot of material. But the slower, wider, and shallower parts of the stream deposit more material than they erode.
What determines how much load a stream can carry?
The ability of streams to carry a load is determined by 2 factors:
Competence and Capacity
. Competence of a stream measures the largest PARTICLES it can transport. A stream's competence increases with it velocity. The competence of a stream increases 4 times-when the velocity doubles.
What is the measure of the largest particles a stream can carry?
A stream's competence
is a measure of the diameter of the largest particle that the stream can transport. A stream's competence is proportionate to the square of its velocity. A stream's capacity is a measure of the maximum quantity of sediment the stream can transport.
What are the components of stream load?
- the bed load – materials bounced along the stream bottom.
- the suspended load – material carried in suspension in the stream water.
- the dissolved load – material carried as dissolved solids in the stream water.
