Mass Movements Flashcards
Which of the following types of mass movements takes place most gradually?
creep
Which of the following types of mass movements is most like a liquid?
Mudflow
Which of the following types of mass movements always travels down a curved surface?
Slump
Which type of mass movement includes a large proportion of as derived from a volcanic eruption?
Lahar
_______ is a turbulent cloud of debris(rock and/or snow) mixed with air that rushes down a steep hill slope at high velocity.
Avalanche
_________ is a wedge-shaped pile of rock fragments that accumulates at the base of a cliff.
Talus
The principle difference between a debris flow and a mudflow is_____
The grain size of moving mass
The principle difference between a lahar and a mudflow is_____.
That the former mass contains pyroclastic debris from a volcanic eruption
The principle difference between a debris flow and a debris slide is ______.
That the former mass contains abundant water whereas the latter is dry
The principle difference between a slump and debris slide is _______.
The shape of the path taken by moving mass
The immediate cause of incidents of mass movements is______.
Graviation
Which of the following can become a weak subsurface?
become a weak subsurface? 1. Wet clay later 2. wet, unconsolidated sand layers 3. surface-parallel joints 4. Metamorphic foliation planes (all of the above!)
