A) A
B) B
C) C
D) D
Correct Answer
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Multiple Choice
A) The discharge and water velocity increase.
B) The maximum sediment grain size carried by the river increases.
C) The total sediment load carried by the river decreases.
D) All of these are correct.
Correct Answer
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Multiple Choice
A) A
B) B
C) C
D) D
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Multiple Choice
A) Braided stream
B) A stream whose channel has a low sinuosity
C) Meandering stream
D) A stream that lacks point bars
E) All of these are correct.
Correct Answer
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Multiple Choice
A) There were two pulses of runoff because there were two storms.
B) The drainage basin has several distinct parts.
C) One pulse could be due to snowmelt and the other to rain.
D) All of these are correct.
Correct Answer
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Multiple Choice
A) 1
B) 2
C) 3
D) 4
Correct Answer
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Multiple Choice
A) The rocks have a relatively equal resistance to erosion.
B) Drainages have followed a series of fractures that branch off of one another.
C) The area has folded or faulted rocks with different resistances to erosion.
D) A volcano once existed here but has been partly eroded away.
Correct Answer
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Multiple Choice
A) A 100-year flood occurs every 100 years on a given stream.
B) The probability of a 100-year flood occurring on any given year is 1:100.
C) A 100-year flood cannot occur twice within 10 years.
D) The probability of a 100-year flood is related to how recently the last 100-year flood occurred.
Correct Answer
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Multiple Choice
A) Major rivers,like the upper Mississippi near the Great Lakes,must be relatively old rivers.
B) The boundary between hard rocks and soft rocks can be marked by waterfalls.
C) Loading and unloading of the crust by ice sheets can change the direction that rivers flow.
D) Different parts of a river can be different ages.
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Multiple Choice
A) decreases.
B) remains the same.
C) increases.
D) There is no way to tell because discharge cannot be determined.
Correct Answer
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Multiple Choice
A) Small,low density particles
B) Pebbles of average density
C) Sand and gravel of relatively high density
D) Dissolved ions in solution
E) All of these are correct.
Correct Answer
verified
Multiple Choice
A) The rocks have a relatively equal resistance to erosion.
B) Drainages have followed a series of fractures that branch off of one another.
C) The area has folded or faulted rocks with different resistances to erosion.
D) A volcano once existed here but has been partly eroded away.
Correct Answer
verified
Multiple Choice
A) low-gradient river followed by downcutting.
B) braided river that later exceeds its capacity to carry sediment.
C) braided river followed by regional uplift.
D) steep-gradient mountain stream following by an increase in precipitation.
Correct Answer
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Multiple Choice
A) A and C
B) B and D
C) C and D
D) D and A
Correct Answer
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Multiple Choice
A) Rocks in the canyon walls are relatively hard and easy to erode.
B) The stream is probably close to its base level.
C) Downcutting is occurring faster than widening.
D) The stream contains mostly small clasts,such as silt.
Correct Answer
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Multiple Choice
A) in slow-moving water in an eddy.
B) in a site that is sheltered from oncoming clasts.
C) located in a turbulent part of the river.
D) composed entirely of large clasts that affect stream flow.
E) All of these are correct.
Correct Answer
verified
Multiple Choice
A) An increase in water velocity
B) A decrease in gradient of the stream
C) An increase in turbulence of the water
D) An increase in the salt content of the water
E) A decrease in grain size as a clast breaks into two pieces
Correct Answer
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Multiple Choice
A) Size and density of the sediment
B) Turbulence of the moving water
C) Location of the sediment in the stream
D) Whether the stream flows north-south or east-west
Correct Answer
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Multiple Choice
A) Point bar
B) Distributary system
C) Levee
D) Cut bank
E) Floodplain
Correct Answer
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Multiple Choice
A) Base level indicates the normal (or base) flow level before flooding.
B) The flat top of a mountain is the ultimate base level for most streams.
C) A mountain is close to its base level if bedrock is close to the surface.
D) Most streams have lower gradient close to their base level.
E) Base level generally is near the steepest part of a stream's profile.
Correct Answer
verified
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