Southern California is famous for its wildfires, which are often exacerbated by the Santa Ana winds blowing through the canyons. What mass wasting event will later devastate the same fire-affected areas?
A) Mudflows
B) Rockslides
C) Slumps
D) Solifluction
Q. 2 - Which of the following will not oversteepen a slope and lead to mass wasting?
A) Quarrying
B) Coastal erosion
C) Construction
D) None of these
Q. 3 - Why is it possible for rock avalanches to move at speeds in excess of 200 kilometers per hour?
A) They are moving with large quantities of water.
B) They are moving with molten material such as lava.
C) They are moving with large quantities of air trapped and compressed beneath the debris.
D) They are moving with large chunks of ice compressed beneath the moving material.
Q. 4 - Which type of motion will supply material to and maintain talus slopes?
A) Flow
B) Fall
C) Slide
D) Slump
Q. 5 - How is it possible for a landslide to occur without a trigger?
A) Heating from geothermal processes weakens the rock.
B) Long-term weathering weakens the rock past the strength necessary to maintain stability.
C) Slopes are shaken by earthquakes and the materials are loosened.
D) Water migrates along the sediment particles, reducing friction between them.
Q. 6 - What is the fastest form of mass wasting?
A) Slide
B) Slump
C) Creep
D) Rock avalanche
Q. 7 - Which slope composition is the most stable?
A) Unconsolidated sediments
B) Rock layers inclined parallel to the slope
C) Solid bedrock
D) Carbonate rock affected by dissolution
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