Geo AS > mass movemnt > Flashcards

mass movemnt Flashcards

(76 cards)

Study These Flashcards
1
Q

What is mass movement?

A

The downward movement of soil and rock due to gravity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the main types of mass movement?

A

Landslides, rockfalls, slumps, and soil creep.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

True or False: Mass movement can occur rapidly or slowly.

A

True.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Fill in the blank: The force that primarily drives mass movement is _____.

A

gravity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a landslide?

A

A sudden and rapid movement of a large amount of rock and soil down a slope.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is soil creep?

A

A slow, gradual downhill movement of soil.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Multiple choice: Which type of mass movement is characterized by rotational movement?

A

Slump.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What factors contribute to mass movement?

A

Slope angle, water content, vegetation cover, and human activity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

True or False: Increased water content in soil can lead to higher mass movement risk.

A

True.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a rockfall?

A

The rapid free-fall of rock from a steep slope or cliff.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Fill in the blank: The term ‘angle of repose’ refers to the maximum angle at which material can remain _____.

A

stable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Multiple choice: Which type of mass movement typically involves a rotational slide?

A

Slump.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What role does vegetation play in mass movement?

A

It helps stabilize soil and reduce erosion.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

True or False: Human activities can exacerbate mass movement.

A

True.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the difference between a landslide and a mudslide?

A

A landslide involves solid rock and soil, while a mudslide consists of a mixture of water and soil.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the primary cause of soil creep?

A

The repeated expansion and contraction of soil due to freeze-thaw cycles.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Fill in the blank: The term ‘liquefaction’ refers to the process where saturated soil behaves like a _____.

A

liquid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Multiple choice: Which of the following is a sign of potential mass movement?

A

Cracks in the ground.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the impact of urbanization on mass movement?

A

It can increase the risk due to changes in drainage and vegetation loss.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

True or False: All mass movements are triggered by natural events.

A

False.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the role of slope angle in mass movement?

A

Steeper slopes are more prone to mass movement.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Fill in the blank: A _____ is a mass movement that occurs when material moves down a slope in a fluid-like manner.

A

mudflow.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What are the signs of soil creep?

A

Tilted trees, cracked pavements, and displaced fences.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Multiple choice: Which type of mass movement is least likely to occur on a flat surface?

A

Rockfall.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
True or False: Mass movement can occur under both saturated and unsaturated conditions.
True.
26
What is the effect of heavy rainfall on mass movement?
It can increase the likelihood of landslides and mudflows.
27
Fill in the blank: The process of removing vegetation can lead to increased risk of _____.
mass movement.
28
What does the term 'triggering event' refer to in the context of mass movement?
An event that initiates the movement, such as heavy rain or earthquakes.
29
Multiple choice: Which of the following is a type of slow mass movement?
Soil creep.
30
What is a 'debris flow'?
A fast-moving mass of loose mud and rock.
31
True or False: Mass movements can create hazards for infrastructure and human safety.
True.
32
What is the importance of understanding mass movement in geography?
To assess and mitigate risks to people and property.
33
Fill in the blank: The term 'mass wasting' is synonymous with _____.
mass movement.
34
What is the effect of freeze-thaw cycles on soil?
They can cause soil to expand and contract, leading to soil creep.
35
Multiple choice: Which type of mass movement is often associated with heavy rainfall?
Mudslide.
36
What is the relationship between vegetation cover and soil stability?
More vegetation generally leads to greater soil stability.
37
True or False: Mass movement can only occur in mountainous areas.
False.
38
What is the significance of soil texture in mass movement?
Soil texture affects water retention and stability.
39
Fill in the blank: An increase in water saturation decreases the ____ of soil.
cohesion.
40
What is a 'rotational slide'?
A type of mass movement where material moves along a curved surface.
41
Multiple choice: Which factor is least likely to influence mass movement?
Air temperature.
42
What is the primary effect of deforestation on mass movement?
Increases the risk of soil erosion and mass movement.
43
True or False: The presence of a drainage system can help reduce mass movement risk.
True.
44
What is 'slope failure'?
The collapse of a slope due to instability.
45
Fill in the blank: The use of retaining walls can help stabilize _____.
slopes.
46
What role does climate play in mass movement?
Climate influences rainfall patterns and vegetation cover, affecting stability.
47
Multiple choice: What is the main characteristic of a rockslide?
Rapid movement of rock down a slope.
48
What are the consequences of mass movement?
Loss of life, property damage, and landscape alteration.
49
True or False: Vegetation can act as a natural barrier against mass movement.
True.
50
What is a 'lahar'?
A type of mudflow composed of volcanic materials.
51
Fill in the blank: The term 'triggering factors' includes natural and ____ causes.
human.
52
What is an important method for monitoring mass movement?
Using GPS and remote sensing technology.
53
Multiple choice: Which of the following is a method to prevent mass movement?
Terracing.
54
What is the significance of slope aspect in mass movement?
It affects sunlight exposure and moisture levels.
55
True or False: Mass movement is not influenced by human interventions.
False.
56
What is the impact of earthquakes on mass movement?
They can trigger landslides by destabilizing slopes.
57
Fill in the blank: The term 'oversteepening' refers to making a slope too _____.
steep.
58
What is the effect of heavy machinery on slopes?
It can destabilize soil and increase mass movement risk.
59
Multiple choice: Which type of mass movement is most likely to occur in arid regions?
Rockfall.
60
What is a 'landslide dam'?
A blockage created by a landslide that obstructs a river.
61
True or False: Mass movements can be predicted with complete accuracy.
False.
62
What is the role of drainage in slope stability?
Proper drainage reduces water accumulation and increases stability.
63
Fill in the blank: The term 'debris avalanche' describes a fast-moving mass of _____.
rock and soil.
64
What is the significance of soil moisture content in mass movement?
It affects cohesion and stability of the slope.
65
Multiple choice: Which of the following is a common indicator of slope instability?
Cracks in the ground.
66
True or False: All types of mass movement involve the same materials.
False.
67
What is a 'sinkhole'?
A depression in the ground caused by the collapse of a surface layer.
68
Fill in the blank: Mass movement can result in the redistribution of _____.
sediment.
69
What is the role of slope vegetation in preventing mass movement?
Roots bind soil and absorb water, enhancing stability.
70
Multiple choice: Which human activity can lead to increased mass movement?
Construction on slopes.
71
What is the relationship between soil compaction and mass movement?
Compacted soil is generally more stable.
72
True or False: Mass movement occurs only in natural environments.
False.
73
What is a 'rockslide' characterized by?
A sudden and rapid movement of rock down a slope.
74
Fill in the blank: The term 'geotechnical investigation' involves studying _____.
soil and rock properties.
75
What is the significance of understanding mass movement for urban planning?
To minimize risks to infrastructure and human safety.
76
Multiple choice: Which of the following is not a type of mass movement?
Tsunami.
Geo AS
flashcards
Decks in class (2)
# Cards
Brainscape helps you reach your goals faster, through stronger study habits.
© 2026 Bold Learning Solutions. Terms and Conditions