14 - Dynamics of mass wasting Flashcards
1
Q
what is rheology
A
study of how materials flow - effects their speed, flow path and therefore hazard
2
Q
how is velocity calculated
A
change in distance / change in time (m/s)
3
Q
how is acceleration calculated
A
change in velocity / change in time (m/s2)
4
Q
how is force calculated
A
mass x acceleration (kg m/s2 = N)
5
Q
how is density calculated
A
mass / volume (kg/m3)
6
Q
how is shear stress calculated
A
force / area (N/m2 = Pa)
7
Q
what are cohesive sediments
A
sediments that stick together to form networks or particles (e.g. clay)
8
Q
how do landslides move
A
for movement, the shear force nest exceed the strength if connection between the rock and slope (shear strength) resulting from friction and material strength
9
Q
A
