Question 1

What is the dominant type of weathering is shown in this photograph?

Accepted Answer

A) dissolution 
B) chemical weathering 
C) debris flow 
D) hydrolysis 
E) physical weathering 
A) dissolution 
B) chemical weathering 
C) debris flow 
D) hydrolysis 
E) physical weathering

Question 2

How does the character of a rock influence weathering

Accepted Answer

A) Fractures and other discontinuities block the entry of water into a rock and so make the rock more resistant to weathering. 
B) Minerals that are soluble can be dissolved and reprecipitated and so are resistant to weathering. 
C) Rocks that are broken have more surface area and so weather faster. 
D) Rocks that are easily weathered and eroded generally form steep cliffs. 
E) None of these. 
A) Fractures and other discontinuities block the entry of water into a rock and so make the rock more resistant to weathering. 
B) Minerals that are soluble can be dissolved and reprecipitated and so are resistant to weathering. 
C) Rocks that are broken have more surface area and so weather faster. 
D) Rocks that are easily weathered and eroded generally form steep cliffs. 
E) None of these.

Question 3

What is the angle of repose?

Accepted Answer

A) the angle of bedding on hills where layers dip parallel to the slope 
B) the angle of fractures on hills where fractures dip parallel to the slope 
C) the angle at which rainfall strikes an unstable slope 
D) the steepest angle at which loose material remains stable 
A) the angle of bedding on hills where layers dip parallel to the slope 
B) the angle of fractures on hills where fractures dip parallel to the slope 
C) the angle at which rainfall strikes an unstable slope 
D) the steepest angle at which loose material remains stable

Question 4

Which of the following factors control how minerals weather?

Accepted Answer

A) whether the mineral has ionic or covalent bonds 
B) what type of mineral is present 
C) the temperature at which the original minerals formed 
D) whether a mineral typically crystallizes early or late in Bowen's Reaction Series 
E) all of these 
A) whether the mineral has ionic or covalent bonds 
B) what type of mineral is present 
C) the temperature at which the original minerals formed 
D) whether a mineral typically crystallizes early or late in Bowen's Reaction Series 
E) all of these

Question 5

Which of the following areas in the investigation terrain is least likely to cause casualties in the event of a slope failure?

Accepted Answer

A) Bent Fence Hills with the leaning trees 
B) flanks of Flattop Hill 
C) Rock Valley 
D) the area below Tilted Mountain 
A) Bent Fence Hills with the leaning trees 
B) flanks of Flattop Hill 
C) Rock Valley 
D) the area below Tilted Mountain

Question 6

A soil that has little or no O-horizon but a thick accumulation of calcium carbonate (caliche)most likely forms in:

Accepted Answer

A) a tropical climate 
B) a temperate climate 
C) an arid climate 
D) an area with abundant rainfall 
E) a short amount of time 
A) a tropical climate 
B) a temperate climate 
C) an arid climate 
D) an area with abundant rainfall 
E) a short amount of time

Question 7

What type of slope failure is shown in this figure?

Accepted Answer

A) rotational slide 
B) creep 
C) rock avalanche 
D) debris flow 
E) rock fall 
A) rotational slide 
B) creep 
C) rock avalanche 
D) debris flow 
E) rock fall

Question 8

Which numbered feature on this figure is a scarp?

Accepted Answer

A) 1,a linear or curved scar marking where the slide pulled away from the hill 
B) 2,small fractures within the sliding block 
C) 3,the intact layers below the rock slide 
D) 4,the front of the slide,where it overruns the land surface 
E) 5,a valley or other open space in front of the slide 
A) 1,a linear or curved scar marking where the slide pulled away from the hill 
B) 2,small fractures within the sliding block 
C) 3,the intact layers below the rock slide 
D) 4,the front of the slide,where it overruns the land surface 
E) 5,a valley or other open space in front of the slide

Question 9

What happens to the surface area of exposed rock if a rock is fractured?

Accepted Answer

A) there are more pieces,but the surface area does not change 
B) the surface area does not change because the volume does not change 
C) the surface area increases as the rock is fractured 
D) the surface area decreases as the rock is fractured 
A) there are more pieces,but the surface area does not change 
B) the surface area does not change because the volume does not change 
C) the surface area increases as the rock is fractured 
D) the surface area decreases as the rock is fractured

Question 10

What type of slope failure is shown in this figure?

Accepted Answer

A) rotational slide 
B) creep 
C) debris slide 
D) debris flow 
E) rock fall 
A) rotational slide 
B) creep 
C) debris slide 
D) debris flow 
E) rock fall

Question 11

Which of the following does NOT commonly occur when dark-colored mafic rocks weather?

Accepted Answer

A) mafic minerals weather to clay minerals by hydrolysis 
B) iron-bearing minerals can oxidize to form the iron oxide mineral hematite 
C) the abundant quartz in the rocks dissolves and forms silica-rich spring deposits 
D) some minerals weather at different rate than other minerals 
A) mafic minerals weather to clay minerals by hydrolysis 
B) iron-bearing minerals can oxidize to form the iron oxide mineral hematite 
C) the abundant quartz in the rocks dissolves and forms silica-rich spring deposits 
D) some minerals weather at different rate than other minerals

Question 12

Based on the photographs of La Conchita,California,what type of slope failure occurred?

Accepted Answer

A) rock avalanche 
B) debris flow 
C) creep 
D) rock fall 
E) earth flow 
A) rock avalanche 
B) debris flow 
C) creep 
D) rock fall 
E) earth flow

Question 13

What events caused so much damage along the north coast of Venezuela in 1999?

Accepted Answer

A) a landslide shook loose a large piece of the mountains that caused the water in the reservoir to flood local towns 
B) torrential rains caused debris flows and flash floods that raced through cities 
C) the slow movement of slopes downhill broke apart houses but did not kill any people 
D) overgrazing caused a loss of grass cover and resulted in severe soil erosion 
A) a landslide shook loose a large piece of the mountains that caused the water in the reservoir to flood local towns 
B) torrential rains caused debris flows and flash floods that raced through cities 
C) the slow movement of slopes downhill broke apart houses but did not kill any people 
D) overgrazing caused a loss of grass cover and resulted in severe soil erosion

Question 14

Which of the following is true about how weathering affects fractured rocks?

Accepted Answer

A) weathering affects rocks from the outside in,forming an outer weathered zone or rind 
B) weathering attacks corners from three sides and so these are preferentially removed 
C) preferential weathering along fractures can cause blocks to become rounded 
D) all of these 
A) weathering affects rocks from the outside in,forming an outer weathered zone or rind 
B) weathering attacks corners from three sides and so these are preferentially removed 
C) preferential weathering along fractures can cause blocks to become rounded 
D) all of these

Question 15

The main feature shown in this photograph illustrates:

Accepted Answer

A) weathering 
B) flooding 
C) permafrost 
D) slope failure 
A) weathering 
B) flooding 
C) permafrost 
D) slope failure

Question 16

What type of slope failure is shown in this figure?

Accepted Answer

A) debris avalanche 
B) creep 
C) rock slide 
D) debris flow 
E) rock fall 
A) debris avalanche 
B) creep 
C) rock slide 
D) debris flow 
E) rock fall

Question 17

Which of the following factors is typically NOT used to classify slope failures?

Accepted Answer

A) whether the material involved is rock or is unconsolidated 
B) the rate of movement 
C) the climate in which the failure occurs 
D) the mechanism by which material moves 
A) whether the material involved is rock or is unconsolidated 
B) the rate of movement 
C) the climate in which the failure occurs 
D) the mechanism by which material moves

Question 18

What type of slope failure is shown in this figure?

Accepted Answer

A) rotational slide 
B) creep 
C) earth flow 
D) debris flow 
E) rock avalanche 
A) rotational slide 
B) creep 
C) earth flow 
D) debris flow 
E) rock avalanche

Question 19

Where does the quartz in granite typically end up?

Accepted Answer

A) as small clay minerals that are deposited in lakes and the sea 
B) quartz does not weather and so it keeps the granite from weathering 
C) it ends up as sand in rivers,dunes,and beaches 
D) it is converted into feldspar and weathers into clays 
A) as small clay minerals that are deposited in lakes and the sea 
B) quartz does not weather and so it keeps the granite from weathering 
C) it ends up as sand in rivers,dunes,and beaches 
D) it is converted into feldspar and weathers into clays

Question 20

Which of the following can we use to recognize prehistoric slope failures?

Accepted Answer

A) sedimentary deposits 
B) orientation of beds and other geologic structures 
C) masses of rock fragments that are unusual for an area 
D) hummocky topography 
E) all of these 
A) sedimentary deposits 
B) orientation of beds and other geologic structures 
C) masses of rock fragments that are unusual for an area 
D) hummocky topography 
E) all of these

What is the dominant type of weathering is shown in this photograph?

How does the character of a rock influence weathering

What is the angle of repose?

Which of the following factors control how minerals weather?

Which of the following areas in the investigation terrain is least likely to cause casualties in the event of a slope failure?

A soil that has little or no O-horizon but a thick accumulation of calcium carbonate (caliche)most likely forms in:

What type of slope failure is shown in this figure?

Which numbered feature on this figure is a scarp?

What happens to the surface area of exposed rock if a rock is fractured?

What type of slope failure is shown in this figure?

Which of the following does NOT commonly occur when dark-colored mafic rocks weather?

Based on the photographs of La Conchita,California,what type of slope failure occurred?

What events caused so much damage along the north coast of Venezuela in 1999?

Which of the following is true about how weathering affects fractured rocks?

The main feature shown in this photograph illustrates:

What type of slope failure is shown in this figure?

Which of the following factors is typically NOT used to classify slope failures?

What type of slope failure is shown in this figure?

Where does the quartz in granite typically end up?

Which of the following can we use to recognize prehistoric slope failures?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

Volcanoes and Volcanic Hazards

Sedimentary Environments and Rocks

Deformation and Metamorphism

Geologic Time

The Seafloor and Continental Margins

Mountains, basins, and Continents

Earthquakes and Earths Interior

Climate, weather, and Their Influences on Geology

Glaciers, shorelines, and Changing Sea Levels

Streams and Flooding

Water Resources

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Geology of the Solar System

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Exam 15: Weathering, soil, and Unstable Slopes

What is the dominant type of weathering is shown in this photograph?

How does the character of a rock influence weathering

What is the angle of repose?

Which of the following factors control how minerals weather?

Which of the following areas in the investigation terrain is least likely to cause casualties in the event of a slope failure?

A soil that has little or no O-horizon but a thick accumulation of calcium carbonate (caliche)most likely forms in:

What type of slope failure is shown in this figure?

Which numbered feature on this figure is a scarp?

What happens to the surface area of exposed rock if a rock is fractured?

What type of slope failure is shown in this figure?

Which of the following does NOT commonly occur when dark-colored mafic rocks weather?

Based on the photographs of La Conchita,California,what type of slope failure occurred?

What events caused so much damage along the north coast of Venezuela in 1999?

Which of the following is true about how weathering affects fractured rocks?

The main feature shown in this photograph illustrates:

What type of slope failure is shown in this figure?

Which of the following factors is typically NOT used to classify slope failures?

What type of slope failure is shown in this figure?

Where does the quartz in granite typically end up?

Which of the following can we use to recognize prehistoric slope failures?

The Nature of Geology

Investigating Geologic Questions

Plate Tectonics

Earth Materials

Igneous Environments

Volcanoes and Volcanic Hazards

Sedimentary Environments and Rocks

Deformation and Metamorphism

Geologic Time

The Seafloor and Continental Margins

Mountains, basins, and Continents

Earthquakes and Earths Interior

Climate, weather, and Their Influences on Geology

Glaciers, shorelines, and Changing Sea Levels

Streams and Flooding

Water Resources

Energy and Mineral Resources

Geology of the Solar System

Filters