Question 1

Which process and which type of weathering are correctly paired to best describe the yellow-red stains that occur on some rock surfaces?

Accepted Answer

A) Hydration; physical. 
B) Hydration; chemical. 
C) Dolution; chemical. 
D) Oxidation; chemical.

Question 2

Why are plants important to the development of karst?

Accepted Answer

A) Primarily because openings adjacent to their roots serve as microchannels that allow water to enter the rock. 
B) Primarily because the decay of large roots below the surface produces cavities which eventually enlarge to form caves. 
C) Primarily because they supply organic acids that enhance the dissolution process. 
D) Plants really do not play a role in the development of karst.

Question 3

Which occurs because water expands by as much as 9% of its volume as it freezes?

Accepted Answer

A) Oxidization. 
B) Exfoliation. 
C) Salt crystal growth. 
D) Frost wedging.

Question 4

When do landslides occur?

Accepted Answer

A) When a threshold is reached. 
B) When the internal friction is overcome by the force of frictional resistance. 
C) When resisting forces exceed driving forces. 
D) When gravity overcomes the weight of the material.

Question 5

Landscapes in a dynamic equilibrium show ongoing adaptations to ongoing changes occurring in a landscape.

Accepted Answer

A) True 
 B)False

Question 6

The angle of repose represents a balance between the driving force and resisting force.Which of the following is the driving force?

Accepted Answer

A) Friction. 
B) Shear. 
C) Gravity. 
D) Inertia.

Question 7

Which are a category of processes produced by human-induced mass movements?

Accepted Answer

A) Debris flows. 
B) Denudation. 
C) Scarification. 
D) Translational slides.

Question 8

Frost wedging is an example of which weathering process?

Accepted Answer

A) Chemical. 
B) Physical. 
C) Biological. 
D) Biogeochemical.

Question 9

Vegetation is necessary for the development of karst topography.

Accepted Answer

A) True 
 B)False

Question 10

Karst topography involves the chemical weathering of granite landscapes.

Accepted Answer

A) True 
 B)False

Question 11

Which is the principle that landscape formation is balanced between endogenic and exogenic processes?

Accepted Answer

A) The dynamic equilibrium model. 
B) Uniformitarianism. 
C) Catostrophism. 
D) Steady state theory.

Question 12

The presence of talus slopes indicates that which occur?

Accepted Answer

A) Planar slides. 
B) Mudflow. 
C) Creep. 
D) Rockfall.

Question 13

Weathering refers specifically to the physical (mechanical)processes that break down rocks and doesn't include the chemical processes that breakdown rocks.

Accepted Answer

A) True 
 B)False

Question 14

Which is the maximum angle at which soil,sediment,and rock will remain without moving downslope (e.g.a stable slope)?

Accepted Answer

A) Height of the slope. 
B) Angle of repose. 
C) Mass movement gradient. 
D) The speed of the particles.

Question 15

If material is to move downslope,it must overcome which forces?

Accepted Answer

A) Tension,shearing and compression. 
B) Stress,strain,and compression. 
C) Cohesion of particles,compression and shearing. 
D) Friction,cohesion of particles,and intertial resistance.

Question 16

Chemical weathering is greatest under which conditions?

Accepted Answer

A) Higher mean annual rainfall and temperatures. 
B) Lower mean annual rainfall and temperatures. 
C) Temperatures below freezing. 
D) Rainfall of less than 25 cm per year.

Question 17

In what ways can water be involved in physical and chemical weathering processes?

Accepted Answer

The answer of In what ways can water be involved...

Question 18

Rust,formed by the reaction of iron and oxygen in the presence of water,is an example of which of the following?

Accepted Answer

A) Hydration. 
B) Frost wedging. 
C) Carbonation. 
D) Oxidation.

Question 19

In the spring of 1903 in Frank,AB,about 82 million tonnes of rock and sediment moved down the east side of Turtle Mountain and surged up the other side of the valley.Of which mass movement is this an example?

Accepted Answer

A) Slide. 
B) Earthflow. 
C) Slump. 
D) Rockfall.

Question 20

When a landform system reaches a geomorphic threshold,it returns to the old system state.

Accepted Answer

A) True 
 B)False

Exam 14: Weathering, karst Landscapes, and Mass Movement

Which process and which type of weathering are correctly paired to best describe the yellow-red stains that occur on some rock surfaces?

Why are plants important to the development of karst?

Which occurs because water expands by as much as 9% of its volume as it freezes?

When do landslides occur?

Landscapes in a dynamic equilibrium show ongoing adaptations to ongoing changes occurring in a landscape.

The angle of repose represents a balance between the driving force and resisting force.Which of the following is the driving force?

Which are a category of processes produced by human-induced mass movements?

Frost wedging is an example of which weathering process?

Vegetation is necessary for the development of karst topography.

Karst topography involves the chemical weathering of granite landscapes.

Which is the principle that landscape formation is balanced between endogenic and exogenic processes?

The presence of talus slopes indicates that which occur?

Weathering refers specifically to the physical (mechanical)processes that break down rocks and doesn't include the chemical processes that breakdown rocks.

Which is the maximum angle at which soil,sediment,and rock will remain without moving downslope (e.g.a stable slope) ?

If material is to move downslope,it must overcome which forces?

Chemical weathering is greatest under which conditions?

In what ways can water be involved in physical and chemical weathering processes?

Rust,formed by the reaction of iron and oxygen in the presence of water,is an example of which of the following?

In the spring of 1903 in Frank,AB,about 82 million tonnes of rock and sediment moved down the east side of Turtle Mountain and surged up the other side of the valley.Of which mass movement is this an example?

When a landform system reaches a geomorphic threshold,it returns to the old system state.