Final Exam Multiple Choice Identify the choice that best completes the statement or answers the question Review Questions 1 Scientists have determined that Mars has actively flowing water filled stream channels 2 All the water in rivers and streams arrives directly from rainfall runoff 3 The primary stream fed by tributaries within a drainage basin is termed a taproot stream c d pirate stream c d rectangular trellis c d rectangular trellis c d rectangular trellis 4 In uniform sediments with a relatively constant slope at the surface a drainage network is 5 In a region with prominent orthogonal sets of joints a drainage network is expected c d rectangular trellis 6 In a region characterized by a parallel series of ridges and valleys a drainage network is 7 All flowing water on the continents surfaces is confined to stream channels 8 In the region immediately surrounding an isolated volcano a drainage network is expected 9 Ephemeral streams a consist of a series of intertwined channels that are overloaded with sediment b have flowing water either episodically or during a portion of the year c have a channel that is highly sinuous curvy d are those that divert flow from streams they have intersected through stream erosion 10 Although the Nile River is longer the Amazon River has the greatest discharge of any stream on Earth 11 The deepest part of the channel where the stream flows fastest is the c stream gradient d thalweg a true b false a true b false lead stream trunk stream a b expected a dendritic b radial a dendritic b radial expected a dendritic b radial a true b false a dendritic b radial a true b false a base level b floodplain 12 As the velocity of flow decreases flow tends to become more laminar a b the maximum flow velocity decreases c suspended sediment starts to be deposited d All of the above are correct 13 The discharge of a river traveling through a humid region will typically downstream the discharge of a river traveling through an arid region will typically downstream increase increase a b decrease decrease increase decrease c d decrease increase 14 Which has greater competence a a small mountain stream 15 Which has greater capacity a a small mountain stream b the Mississippi River b the Mississippi River 16 The sediment load of a stream consists of only those grains that are fine enough to stay in suspension a true b false a base level b floodplain a base level b floodplain a b sea level c 17 The stream gradient of most rivers is greater near the source than near the mouth is greater near the mouth than near the source a b c does not change significantly as the river flows downstream is greater for a meandering stream than for any other type d 18 The lowest elevation to which a stream can downcut is the c stream gradient d thalweg c gradient thalweg d 19 The slope of a stream surface measured between two points along its course is the 20 Ultimately the base level of a stream valley can be no lower than the average elevation of the continent on which it is found the average elevation of the ocean basins 21 All else being equal water will flow faster in a stream that has a 22 All else being equal water will flow faster in a stream with a steep stream gradient a well developed meanders turbulent a b chaotic flowed into a trunk stream a lower b slower b gentle stream gradient b a straight channel c competent laminar d c faster d higher 23 Moving away from its headwaters the flow of a stream usually becomes more 24 The base level of a tributary would become if a dam and reservoir were constructed where it 26 At a waterfall where two sedimentary lithologies are juxtaposed which lithology is more likely to form the 25 The distinction between a valley and a canyon is the sides of a canyon are more steep than those of a valley the sides of a valley are more steep than those of a canyon a nonexistent the two terms are synonymous b c d valleys are often cut by streams canyons are eroded out by the wind cliff over which the water falls a sandstone b shale 27 Within a meander where is sediment most likely to be deposited a on the outer banks of the meander b on the inner banks of the meander c uniformly to either side of the meander 28 The inner edge of a meander where sediment is deposited is a n a meander neck b cut bank c point bar d abandoned meander 29 Meandering streams a consist of a series of intertwined channels that are overloaded with sediment b have flowing water either episodically or during a portion of the year c have a channel that is highly sinuous curvy d are those that divert flow from streams they have intersected through stream erosion 30 The outer edge of a meander where material is being eroded is a n 31 The flat lying area surrounding a river channel is termed the a meander neck b cut bank a base level b floodplain c point bar d abandoned meander c stream gradient d thalweg 32 V shaped stream valleys result from the downcutting of stream erosion and a mass wasting on the valley sides b isostatic rebound 33 Braided streams the rule of the V s c d conservation of angular momentum a consist of a series of intertwined channels that are overloaded with sediment b have flowing water either episodically or during a portion of the year c have a channel that is highly sinuous curvy d are antecedent 34 The shape of a delta is primarily determined by the shape of the river channel near the mouth the average grain size of the suspended and bed loads a b c whether river currents wave driven currents or tidal currents are locally predominant d the type of rock that is weathering at outcrop near the headwaters of the river 35 A meander that is cut off to become completely isolated from the main channel but which retains water is a n a meander neck b cut bank c oxbow lake d abandoned meander 36 The deltas of all major rivers consist of multiple radiating lobes of sediment in a bird s foot configuration similar to the Mississippi River delta a true b false 37 At a delta a stream gradient decreases b a single channel breaks into multiple radiating distributary channels c A and B are both correct d None of the above are correct 38 Which river is a threat to capture the flow of the Mississippi River through stream piracy c Atchafalaya River d Zydeco River 39 Geological evidence suggests that many millions of years ago the Amazon flowed toward the west rather a Old Muddy River b New River than the east true a b false 40 If a stream cuts through flat lying sediments to
View Full Document
Unlocking...