A) creep.
B) a rock slide.
C) a debris avalanche.
D) a debris flow.
E) All of these.
G) C) and D)
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A) A landslide shook loose a large piece of the mountains that caused the water in the reservoir to flood local towns.
B) Torrential rains caused debris flows and flash floods that raced through cities.
C) The slow movement of slopes downhill broke apart houses but did not kill any people.
D) Overgrazing caused a loss of grass cover and resulted in severe soil erosion.
F) A) and B)
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A) rotational slide
B) creep
C) rock avalanche
D) debris flow
E) rock fall
G) B) and D)
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A) as small clay minerals that are deposited in lakes and the sea
B) quartz does not weather and so it keeps the granite from weathering
C) as sand in rivers, dunes, and beaches
D) it is converted into feldspar and weathers into clays
F) A) and B)
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A) dissolution.
B) hydrolysis.
C) physical weathering.
D) spontaneous combustion.
F) B) and D)
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A) a huge rock fall that formed Colorado's second largest lake
B) a debris flow that came down Big Thompson Canyon
C) a debris avalanche that raced downhill at breathtaking speeds
D) a slow-moving earth flow
F) B) and D)
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A) Florida.
B) Mississippi.
C) Minnesota.
D) Texas.
F) B) and C)
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A) debris avalanche
B) creep
C) rock slide
D) debris flow
E) rock fall
G) A) and B)
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A) travertine
B) stalagmite
C) stalactite
D) sinkhole
E) flowstone
G) C) and D)
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D
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A) weakening the hydrogen bond in water, making it more effective at dissolving rocks with high quartz concentrations.
B) slowing the rate of jointing in rocks.
C) acting as a catalyst for dissolution of minerals that crystallize at the highest temperatures.
D) secreting oxalic acid, which dissolves carbonates particularly well.
F) None of the above
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A) mostly form at depth and are uplifted to the surface.
B) can detach thin slices of rock parallel to the land surface.
C) cause areas to be less resistant to weathering than those without joints.
D) All of these.
F) All of the above
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A) sedimentary deposits
B) orientation of beds and other geologic structures
C) masses of rock fragments that are unusual for an area
D) hummocky topography
E) All of these.
G) A) and D)
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A) earth flow
B) rock avalanche
C) debris flow
D) rock fall
E) debris avalanche
G) C) and D)
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A) 1, a linear or curved scar marking where the slide pulled away from the hill
B) 2, small fractures within the sliding block
C) 3, the intact layers below the rock slide
D) 4, the front of the slide, where it overruns the land surface
E) 5, a valley or other open space in front of the slide
G) A) and B)
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A) evaporite rocks such as gypsum
B) areas underlain by salt
C) sandstone
D) evaporite rocks and areas underlain by salt, but not sandstone
F) C) and D)
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A) rotational slide
B) creep
C) debris slide
D) debris flow
E) rock fall
G) C) and E)
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A) water contracting as it freezes
B) crystals of salt and other minerals that exert an outward force on fractures
C) roots that pry apart fractures as the root grows in size
D) joints that form when rock pressures are released
E) rodents and other burrowing organisms
G) C) and D)
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A
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A) tropical
B) arid
C) mid-latitude
D) polar
F) All of the above
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A
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A) Mafic minerals weather to clay minerals by hydrolysis.
B) Iron-bearing minerals can oxidize to form the iron oxide mineral hematite.
C) The abundant quartz in the rocks dissolves and forms silica-rich spring deposits.
D) Some minerals weather at different rate than other minerals.
F) A) and D)
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A) Quartz is very soluble during weathering at low temperatures.
B) Limestone weathers rapidly in wet climates but can form cliffs in dry ones.
C) As a granite weathers, quartz rapidly decomposes into clay minerals.
D) Most minerals in granite weather at nearly the same rate and so granite has smooth surfaces.
F) A) and C)
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