Which of the following features characterize wide streams and valleys?

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Polisci180

Chapter 10

Question	Answer
Downcutting (also known as rejuvenation) of a stream may be due to ________.	uplift of land
The suspended load of a stream ________.	usually consists of fine particles
A ________ stream pattern is developed only on growing mountains like volcanoes or where the land surface is tectonically doming upward.	radial
A ________ stream pattern develops on lands underlain by alternating bands of resistant and less-resistant rock.	trellis
The most common drainage pattern is ________.	dendritic
________ is an abandoned, cutoff, meander loop.	An oxbow
A stream begins at an elevation of 200 meters and flows a distance of 400 kilometers to the ocean. What is the average gradient?	0.5 m/km
________ are characteristics of downcutting streams and a youthful stage of valley evolution.	Rapids and lots of whitewater
________ generally constitutes the highest percentage of the annual sediment load moved by a stream.	Suspended load
A ________ drainage pattern is common in areas where the bedrock is criss-crossed by a series of joints and/or faults.	rectangular
Which of the following features characterize wide streams and valleys?	natural levees; broad floodplains
As stream discharge increases ________.	velocity, width, and depth increase
The single most important erosional agent is ________.	running water
The capacity of a stream measures the maximum size of particles it is capable of transporting.	False
Gradients usually decrease downstream in a major river system.	True
Alluvium refers to stream deposits, mainly sand and gravel.	True
The lowest base level for most streams is sea level.	True
Point bars are depositional features located along the outer portions of meander bends.	False
Stream discharge is defined as the quantity of water flowing past a specific channel location per unit time.	True
More water is evaporated from the ocean than is returned to the ocean by precipitation.	True
One river can be the base level for another.	True
The Mississippi River is North America's largest river in terms of discharge.	True
A V-shaped valley and no floodplain indicate a youthful, downcutting stream.	True
If two streams are identical in every respect except for gradient, the stream with the higher gradient would have the greater velocity.	True
Creating artificial cutoffs increases stream velocity.	True
Floods are the least destructive of all geologic hazards.	False

Created by: tjddn8888

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