Question 1

The base level of a tributary would ________ if a dam and a reservoir were constructed where it flowed into a trunk stream.

Accepted Answer

A)  be unchanged 
B)  become unpredictable 
C)  fall 
D)  rise 
A)  be unchanged 
B)  become unpredictable 
C)  fall 
D)  rise

Question 2

Sketch a meandering stream in map view.Your drawing should include (labeled)the channel,floodplain,meanders,and at least one oxbow lake.How does an oxbow lake form?

Accepted Answer

Student illustrations may resemble the f

Question 3

The figure below shows an example of a ________ drainage network.

Accepted Answer

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

Question 4

Urbanization of a watershed is most likely to result in __________.

Accepted Answer

A)  increased infiltration of rainwater 
B)  a longer lag time between storms and the onset of flooding 
C)  an increase in the volume of water entering streams after rainfall 
D)  a decrease in the likelihood of flash flooding 
A)  increased infiltration of rainwater 
B)  a longer lag time between storms and the onset of flooding 
C)  an increase in the volume of water entering streams after rainfall 
D)  a decrease in the likelihood of flash flooding

Question 5

The lowest elevation to which a stream can downcut is the ________.

Accepted Answer

A)  base level 
B)  floodplain 
C)  stream gradient 
D)  thalweg 
A)  base level 
B)  floodplain 
C)  stream gradient 
D)  thalweg

Question 6

Water in a stream flows from its _________ to its __________.

Accepted Answer

A)  mouth,headwaters 
B)  mouth,source 
C)  source,headwaters 
D)  headwaters,mouth 
A)  mouth,headwaters 
B)  mouth,source 
C)  source,headwaters 
D)  headwaters,mouth

Question 7

Braided streams ________.

Accepted Answer

A)  consist of a series of intertwined channels that are overloaded with sediment 
B)  have flowing water either episodically or during only 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 capture 
A)  consist of a series of intertwined channels that are overloaded with sediment 
B)  have flowing water either episodically or during only 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 capture

Question 8

Using the image below label the stream channel,meander,floodplain,headwaters,and mouth.Additionally,sketch a cross-section of this stream from A to A' and from C to C'.

Accepted Answer

Please ref

Question 9

Which type of drainage network is associated with badlands topography?

Accepted Answer

A)  dendritic 
B)  parallel 
C)  rectangular 
D)  trellis 
A)  dendritic 
B)  parallel 
C)  rectangular 
D)  trellis

Question 10

The hydrograph below shows the discharge of a stream in a natural system following a rainfall event.Draw a similar graph showing how the discharge curve might change following urbanization of this same system.Why has this change taken place?

Accepted Answer

Student answers should resembl

Question 11

The shape of a delta is primarily determined by ________.

Accepted Answer

A)  the shape of the river channel near the mouth 
B)  the average grain size of the suspended and bed loads 
C)  whether river currents or ocean currents are locally predominant 
D)  the type of rock that is weathering at the outcrop near the headwaters of the river 
A)  the shape of the river channel near the mouth 
B)  the average grain size of the suspended and bed loads 
C)  whether river currents or ocean currents are locally predominant 
D)  the type of rock that is weathering at the outcrop near the headwaters of the river

Question 12

Meandering streams ________.

Accepted Answer

A)  consist of a series of intertwined channels that are overloaded with sediment 
B)  have flowing water either episodically or during only 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 
A)  consist of a series of intertwined channels that are overloaded with sediment 
B)  have flowing water either episodically or during only 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

Question 13

The outer edge of a meander,where material is being eroded,is a(n)________.

Accepted Answer

A)  meander neck 
B)  cut bank 
C)  point bar 
D)  abandoned meander 
A)  meander neck 
B)  cut bank 
C)  point bar 
D)  abandoned meander

Question 14

Runoff is NOT commonly derived from ________.

Accepted Answer

A)  sheetwash 
B)  rainfall or snowfall 
C)  ocean currents 
D)  groundwater springs 
A)  sheetwash 
B)  rainfall or snowfall 
C)  ocean currents 
D)  groundwater springs

Question 15

Which of the following is NOT true? A 100-year flood ________.

Accepted Answer

A)  has a 1% chance of occurring in any given year 
B)  is more destructive than a 50-year flood 
C)  cannot occur in successive years 
D)  is based on the average recurrence interval of past floods for a particular stream 
A)  has a 1% chance of occurring in any given year 
B)  is more destructive than a 50-year flood 
C)  cannot occur in successive years 
D)  is based on the average recurrence interval of past floods for a particular stream

Question 16

Within a meander,where is sediment most likely to be deposited?

Accepted Answer

A)  on the outer banks of the meander 
B)  on the inner banks of the meander 
C)  uniformly to either side of the meander 
D)  directly in the middle of the meander 
A)  on the outer banks of the meander 
B)  on the inner banks of the meander 
C)  uniformly to either side of the meander 
D)  directly in the middle of the meander

Question 17

First identify,then compare and contrast the features in the two photographs below.

Accepted Answer

The first photograph is of an alluvial f

Question 18

The primary stream fed by tributaries within a dendritic drainage network is termed a ________ stream.

Accepted Answer

A)  lead 
B)  trunk 
C)  taproot 
D)  pirate 
A)  lead 
B)  trunk 
C)  taproot 
D)  pirate

Question 19

What physical property of the underlying rock would lead to the formation of a cliff over which a waterfall may form?

Accepted Answer

A)  a high resistance to erosion 
B)  high porosity 
C)  large permeability 
D)  very fine grain sizes 
A)  a high resistance to erosion 
B)  high porosity 
C)  large permeability 
D)  very fine grain sizes

Question 20

Two 100-year floods can occur in two consecutive years.Use the concept of recurrence interval to explain how this is possible.

Accepted Answer

The recurrence interval of a flood of a

Exam 17: Streams and Floods: the Geology of Running Water

The base level of a tributary would ________ if a dam and a reservoir were constructed where it flowed into a trunk stream.

Sketch a meandering stream in map view.Your drawing should include (labeled)the channel,floodplain,meanders,and at least one oxbow lake.How does an oxbow lake form?

The figure below shows an example of a ________ drainage network.

Urbanization of a watershed is most likely to result in __________.

The lowest elevation to which a stream can downcut is the ________.

Water in a stream flows from its _________ to its __________.

Braided streams ________.

Using the image below label the stream channel,meander,floodplain,headwaters,and mouth.Additionally,sketch a cross-section of this stream from A to A' and from C to C'.

Which type of drainage network is associated with badlands topography?

The hydrograph below shows the discharge of a stream in a natural system following a rainfall event.Draw a similar graph showing how the discharge curve might change following urbanization of this same system.Why has this change taken place?

The shape of a delta is primarily determined by ________.

Meandering streams ________.

The outer edge of a meander,where material is being eroded,is a(n)________.

Runoff is NOT commonly derived from ________.

Which of the following is NOT true? A 100-year flood ________.

Within a meander,where is sediment most likely to be deposited?

First identify,then compare and contrast the features in the two photographs below.

The primary stream fed by tributaries within a dendritic drainage network is termed a ________ stream.

What physical property of the underlying rock would lead to the formation of a cliff over which a waterfall may form?

Two 100-year floods can occur in two consecutive years.Use the concept of recurrence interval to explain how this is possible.

Cosmology and the Birth of the Earth

Journey to the Center of the Earth

Drifting Continents and Spreading Seas

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

The Wrath of Vulcan: Volcanic Eruptions

A Violent Pulse: Earthquakes

Crags,cracks,and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of the Earth

Squeezing Power From a Stone: Energy Resources

Riches in Rock: Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

An Envelope of Gas: the Earths Atmosphere and Climate

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Introducing Rocks

a Surface Veneer: Sediments and Soils

the Rock Cycle in the Earth System

the Earths Interior, Revisited: Seismic Layering, Gravity, and the Magnetic Field

Memories of Past Life: Fossils and Evolution

Ever-Changing Landscapes and the Hydrologic Cycle

Prelude: and Just What Is Geology

Filters

Water in a stream flows from its _ to its __.