Chp. 16 Study questions part 1
The total volume of flow in streams is termed ________.
Discharge.
The point of confluence of a tributary with a higher order stream is a(n) ________.
local base level.
Death Valley is below sea level. Therefore, in Death Valley, base level is ________ ultimate base level.
lower than
An interfluve can be found ________.
between valleys
A steep walled defile with a V-shaped profile and narrow valley floor would, according to the geomorphic cycle, be in the ________ stage.
youthful
The eventual result of ________ is to reduce almost all stream-carried debris to very small silt particles.
Abrasion.
An imaginary surface extending beneath the continents which limits how deep streams may cut is ________.
Base level.
________ is a measure of the particle size a stream can transport.
Competence.
The chemical erosion of stream channels is known as ______.
Corrosion
This drainage pattern looks like the veins on the underside of a leaf:
Dendritic.
Which of the below is the major concept to which all the others are part of?
Drainage basin.
A peneplain is the ________ of the classical geomorphic cycle of erosion.
End product.
All but one of the following would cause an increase in the erosive effectiveness of streamflow: ________.
decrease the turbulence.
Any stream may lengthen its valley by ________ and delta formation.
Headward erosion
The land separating adjoining valleys is known as a(n) ________.
Interfluve.
Streams which flow for only a part of the year are ________.
Intermittent
During low water cycles, any channel bottom change is likely to undergo ________.
aggradation
A stream valley lengthens at the expense of the ________.
interfluve
A flat alluvium-floored valley with fairly steep walls and a stream beginning to meander would be in the ________ stage of the erosion cycle.
mature.
Splash erosion ________.
moves eroded particles uphill and downhill. Is sometimes minimal because of vegetation and blasts fine soil particles upward and outward.
The final result of the classical theory of the geomorphic cycle concept is ________.
a peneplain.
In the system of stream orders, the smallest unit in the network is at the ________.
1st order.
Which of the following would be most likely to develop a radial drainage pattern?
A cone-shaped volcano.
A ________ develops along a streambed containing bedrock of differential resistance.
Knickpoint.
On a meandering stream, maximum erosion takes place along the ________.
Outer edge of the meanders.
Fluvial process includes both the streamflow within valleys as well as ________.
Overland flow
A typical drainage pattern on conic volcanic mountains would be ________.
Radial.
The existence of a stream terrace is sure evidence of ________.
Rejuvenation.
In terms of erosion, a gulley is a larger example of a feature called a(n) ________.
Rill.
The process in which small particles are moved along by streamflow or wind in a series of jumps or bounces is ________.
Saltation.
First order streams are the ________ of all streams.
Shortest.
The direct collision of a raindrop with the ground, laterally shifting fine particles a few millimeters, is ________.
Splash erosion.
The greatest amount of material transported by a stream is carried in its ________.
Suspended load.
A ________ pattern of drainage usually develops on alternating bands of hard and soft strata.
Trellis.
The drainage pattern common in ridge and valley landscapes is ________.
Trellis.
Rivers downcutting into a land surface, in the absence of other forces, usually tend to erode a ________-shaped form.
V
Surface indicators of turbulence in streamflows include eddies and ________.
Whirlpools
Niagara Falls is a large waterfall on a river, so it can be considered as an example of ________.
a knickpoint.
The elevation limit of a stream downcutting on a land mass is called ________.
base level
Marking the outer edge of floodplains are landforms called ________.
bluffs.
As a stream-related measure, competence is expressed as a ________.
diameter (millimeters)
The idealized sequence of slope retreat, according to Davis, would result in ________.
diminishing slope angles
Branching channels that cross a delta are known as ________.
distributaries.
When a meandering stream is incised into a gradually rising crust or bedrock the result is a(n) ________.
entrenched meander.
The detachment and removal of fragmented rock material is known as ________.
erosion.
The most prominent of all depositional landscapes is the ________.
floodplain.
Which type of erosion generates the most sediment per square meter in the places where it occurs?
gulley erosion
The degree of turbulence in streamflow is determined by the velocity and the ________.
stream channel roughness.
Downcutting is usually most prominent along the ________ part of a stream valley.
upper
A valley bottom might be differentiated from valley sides in that ________.
valley sides commonly have lips or rims.
