Chapter 10
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| Downcutting (also known as rejuvenation) of a stream may be due to ________. | uplift of land
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| The suspended load of a stream ________. | usually consists of fine particles
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| A ________ stream pattern is developed only on growing mountains like volcanoes or where the land surface is tectonically doming upward. | radial
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| A ________ stream pattern develops on lands underlain by alternating bands of resistant and less-resistant rock. | trellis
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| The most common drainage pattern is ________. | dendritic
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| ________ is an abandoned, cutoff, meander loop. | An oxbow
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| 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
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| ________ are characteristics of downcutting streams and a youthful stage of valley evolution. | Rapids and lots of whitewater
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| ________ generally constitutes the highest percentage of the annual sediment load moved by a stream. | Suspended
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| A ________ drainage pattern is common in areas where the bedrock is criss-crossed by a series of joints and/or faults. | rectangular
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| Which of the following features characterize wide streams and valleys? | natural levees; broad floodplains
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| As stream discharge increases ________. | velocity, width, and depth increase
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| The single most important erosional agent is ________. | running water
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| The capacity of a stream measures the maximum size of particles it is capable of transporting. | False
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| Gradients usually decrease downstream in a major river system. | True
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| Alluvium refers to stream deposits, mainly sand and gravel. | True
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| The lowest base level for most streams is sea level. | False
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| Point bars are depositional features located along the outer portions of meander bends. | False
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| Stream discharge is defined as the quantity of water flowing past a specific channel location per unit time. | True
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| More water is evaporated from the ocean than is returned to the ocean by precipitation. | True
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| One river can be the base level for another. | False
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| The Mississippi River is North America's largest river in terms of discharge. | True
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| A V-shaped valley and no floodplain indicate a youthful, downcutting stream. | False
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| If two streams are identical in every respect except for gradient, the stream with the higher gradient would have the greater velocity. | True
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| Creating artificial cutoffs increases stream velocity. | True
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| Floods are the least destructive of all geologic hazards. | False
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