Mass Movement Flashcards
What is mass movement?
The downslope movement of soil and rock due to gravity.
True or False: Mass movement occurs only on steep slopes.
False.
Name one type of mass movement.
Landslide.
Fill in the blank: Mass movement can be triggered by __________.
Heavy rainfall.
What are the two main types of mass movement?
Slow and rapid movements.
Which type of mass movement is characterized by a sudden and fast movement of material?
Rapid mass movement.
Define ‘landslide’.
A mass movement of rock and soil down a slope.
True or False: Creep is a type of rapid mass movement.
False.
What is soil creep?
The slow, gradual downhill movement of soil.
Multiple Choice: Which of the following is NOT a type of mass movement? A) Avalanche B) Creep C) Erosion D) Rockfall
C) Erosion.
What role does water play in mass movement?
It reduces friction and increases the weight of materials.
Fill in the blank: The main driving force behind mass movement is __________.
Gravity.
What is the difference between a debris flow and a mudflow?
Debris flow contains larger materials, while mudflow is primarily composed of water and fine sediments.
True or False: Vegetation can help stabilize slopes and reduce mass movement.
True.
What is a rockfall?
The rapid descent of rock fragments from a steep slope.
Multiple Choice: Which of the following is a factor that affects mass movement? A) Climate B) Topography C) Material composition D) All of the above
D) All of the above.
What is the term for the accumulation of debris at the base of a slope?
Talus.
Fill in the blank: The __________ is the angle of repose for soil and rock materials.
Steepest stable slope.
What is the significance of the angle of repose?
It determines the stability of slopes.
True or False: Human activities can increase the risk of mass movement.
True.
What is an earthflow?
A type of mass movement where saturated soil flows down a slope.
Multiple Choice: Which of the following can be a consequence of mass movement? A) Landslides B) Property damage C) Loss of life D) All of the above
D) All of the above.
What type of mass movement is characterized by a rotational slide?
Slump.
Fill in the blank: __________ is the process that involves the movement of rock and soil down a slope under the influence of gravity.
Mass wasting.
