Question 1

The topographic rise between two streams is called a

Accepted Answer

A) divide. 
B) point bar. 
C) trellis. 
D) valley. 
A) divide. 
B) point bar. 
C) trellis. 
D) valley.

Question 2

The process whereby streams progressively cut their channels upland is called

Accepted Answer

A) weathering. 
B) pothole formation. 
C) headward erosion. 
D) undercutting. 
A) weathering. 
B) pothole formation. 
C) headward erosion. 
D) undercutting.

Question 3

The long dimension of a ripple forms ________ to the current direction.

Accepted Answer

A) parallel 
B) at a 45$\degree$ angle 
C) at a 60$\degree$ angle 
D) perpendicular 
A) parallel 
B) at a 45$\degree$ angle 
C) at a 60$\degree$ angle 
D) perpendicular

Question 4

What type of drainage network would you expect to find on a volcano?

Accepted Answer

A) dendritic drainage 
B) rectangular drainage 
C) radial drainage 
D) trellis drainage 
A) dendritic drainage 
B) rectangular drainage 
C) radial drainage 
D) trellis drainage

Question 5

Which of the following materials is most likely to be transported as suspended load?

Accepted Answer

A) boulders 
B) clay 
C) gravel 
D) sand 
A) boulders 
B) clay 
C) gravel 
D) sand

Question 6

Which of the following statements regarding floods is true?

Accepted Answer

A) A 50-year flood has a 2% chance of occurring in any one year. 
B) A 50-year flood is generally larger than a 100-year flood. 
C) A 50-year flood occurs more frequently than a 5-year flood. 
D) A 50-year flood on one river is the same size as a 50-year flood on another river. 
A) A 50-year flood has a 2% chance of occurring in any one year. 
B) A 50-year flood is generally larger than a 100-year flood. 
C) A 50-year flood occurs more frequently than a 5-year flood. 
D) A 50-year flood on one river is the same size as a 50-year flood on another river.

Question 7

Why are deltas poorly developed on island arcs?

Accepted Answer

A) Island arcs are too young geologically. 
B) Wave action around island arcs is too strong. 
C) Volcanic rock is poor material for delta formation. 
D) Island arcs have small land areas. 
A) Island arcs are too young geologically. 
B) Wave action around island arcs is too strong. 
C) Volcanic rock is poor material for delta formation. 
D) Island arcs have small land areas.

Question 8

The factor(s)that dictate(s)whether water in a stream channel undergoes turbulent or laminar flow is(are)

Accepted Answer

A) the velocity of the water. 
B) the geometry of the stream channel. 
C) the viscosity of the water. 
D) the velocity of the water,the geometry of the stream channel,and the viscosity of the water. 
A) the velocity of the water. 
B) the geometry of the stream channel. 
C) the viscosity of the water. 
D) the velocity of the water,the geometry of the stream channel,and the viscosity of the water.

Question 9

Suspended load includes all material

Accepted Answer

A) rolling along the bottom of the stream. 
B) temporarily or permanently suspended in the flow. 
C) deposited on the bottom of the stream. 
D) rolling along the bottom and suspended in the flow. 
A) rolling along the bottom of the stream. 
B) temporarily or permanently suspended in the flow. 
C) deposited on the bottom of the stream. 
D) rolling along the bottom and suspended in the flow.

Question 10

An antident stream is

Accepted Answer

A) controlled by the current topography. 
B) always predated by the current topography. 
C) a type of meandering river. 
D) a kind of superposed stream. 
A) controlled by the current topography. 
B) always predated by the current topography. 
C) a type of meandering river. 
D) a kind of superposed stream.

Question 11

Which of the following correctly lists the order of bed forms that develop with increasing current velocity?

Accepted Answer

A) dunes,ripples,flat beds 
B) ripples,dunes,flat beds 
C) flat beds,dunes,ripples 
D) ripples,flat beds,dunes 
A) dunes,ripples,flat beds 
B) ripples,dunes,flat beds 
C) flat beds,dunes,ripples 
D) ripples,flat beds,dunes

Question 12

Which of the following sets of conditions would favor turbulent flow as opposed to laminar flow?

Accepted Answer

A) high fluid viscosity and high flow velocity 
B) high fluid viscosity and low flow velocity 
C) low fluid viscosity and high flow velocity 
D) low fluid viscosity and low flow velocity 
A) high fluid viscosity and high flow velocity 
B) high fluid viscosity and low flow velocity 
C) low fluid viscosity and high flow velocity 
D) low fluid viscosity and low flow velocity

Question 13

As the velocity of a stream current increases,

Accepted Answer

A) more of the bed material is in motion. 
B) progressively finer particles are suspended. 
C) the suspended load decreases. 
D) total capacity decreases. 
A) more of the bed material is in motion. 
B) progressively finer particles are suspended. 
C) the suspended load decreases. 
D) total capacity decreases.

Question 14

How far can large rivers,such as the Amazon,maintain a current out to sea?

Accepted Answer

A) meters 
B) tens of meters 
C) hundreds of meters 
D) many kilometers 
A) meters 
B) tens of meters 
C) hundreds of meters 
D) many kilometers

Question 15

Potholes in bedrock of riverbeds form by

Accepted Answer

A) abrasion. 
B) undercutting. 
C) chemical and physical weathering. 
D) sedimentation. 
A) abrasion. 
B) undercutting. 
C) chemical and physical weathering. 
D) sedimentation.

Question 16

Which of the following is considered part of a stream's bed load?

Accepted Answer

A) dissolved salts 
B) saltating sand grains 
C) gravel sliding along the bottom 
D) suspended clay particles 
A) dissolved salts 
B) saltating sand grains 
C) gravel sliding along the bottom 
D) suspended clay particles

Question 17

What is the primary reason sediment is deposited in large cone-shaped deposits at mountain fronts?

Accepted Answer

A) because stream valleys widen abruptly at a mountain front 
B) because stream valleys narrow abruptly at a mountain front 
C) because stream valleys get much steeper at a mountain front 
D) because stream valleys get less steep at a mountain front 
A) because stream valleys widen abruptly at a mountain front 
B) because stream valleys narrow abruptly at a mountain front 
C) because stream valleys get much steeper at a mountain front 
D) because stream valleys get less steep at a mountain front

Question 18

Which of the following situations,for a fluid,is most likely to generate crossing streamlines?

Accepted Answer

A) low viscosity,high flow rate 
B) high viscosity,high flow rate 
C) low viscosity,low flow rate 
A) low viscosity,high flow rate 
B) high viscosity,high flow rate 
C) low viscosity,low flow rate

Question 19

What is the minimum speed needed to suspend a 1-cm perfectly spherical quartz grain?

Accepted Answer

A) 0.5 m/sec 
B) 1 m/sec 
C) 5 m/sec 
D) 10 m/sec 
A) 0.5 m/sec 
B) 1 m/sec 
C) 5 m/sec 
D) 10 m/sec

Question 20

During turbulent flow,smaller grains will not

Accepted Answer

A) be picked up more frequently than large grains. 
B) jump higher than large grains. 
C) settle more quickly than large grains. 
D) travel farther than large grains. 
A) be picked up more frequently than large grains. 
B) jump higher than large grains. 
C) settle more quickly than large grains. 
D) travel farther than large grains.

Exam 18: Stream Transport: From Mountains to Oceans

The topographic rise between two streams is called a

The process whereby streams progressively cut their channels upland is called

The long dimension of a ripple forms ________ to the current direction.

What type of drainage network would you expect to find on a volcano?

Which of the following materials is most likely to be transported as suspended load?

Which of the following statements regarding floods is true?

Why are deltas poorly developed on island arcs?

The factor(s)that dictate(s)whether water in a stream channel undergoes turbulent or laminar flow is(are)

Suspended load includes all material

An antident stream is

Which of the following correctly lists the order of bed forms that develop with increasing current velocity?

Which of the following sets of conditions would favor turbulent flow as opposed to laminar flow?

As the velocity of a stream current increases,

How far can large rivers,such as the Amazon,maintain a current out to sea?

Potholes in bedrock of riverbeds form by

Which of the following is considered part of a stream's bed load?

What is the primary reason sediment is deposited in large cone-shaped deposits at mountain fronts?

Which of the following situations,for a fluid,is most likely to generate crossing streamlines?

What is the minimum speed needed to suspend a 1-cm perfectly spherical quartz grain?

During turbulent flow,smaller grains will not

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Sedimentation: Rocks Formed by Surface Processes

Metamorphism: Alteration of Rocks by Temperature and Pressure

Deformation: Modification of Rocks by Folding and Fracturing

Clocks in Rocks: Timing the Geologic Period

Early History of the Terrestrial Planets

History of the Continents

Geobiology: Life Interacts With Earth

Volcanoes

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Winds and Deserts

Coastlines and Ocean Basins

Glaciers: the Work of Ice

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

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