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Chapter 8

Chapter Test

Chapter Test

Select the most appropriate response for each of the following questions.


This activity contains 18 questions.

	Mass wasting is __________.   a collective term for all the processes that modify Earth's surface the downslope movement of material under the influence of gravity the transport of rock and soil by wind and water the decomposition of rocks under the influence of gravity the chemical and physical breakdown of rock

	Gravity is the controlling force of mass wasting.    True  False

	Which of the following will promote mass wasting?   earthquake vibrations removal of anchoring vegetation oversaturation with water oversteepening a slope all of the above

	The combined effects of mass wasting and running water produce stream valleys.    True  False

	Which one of these materials has the steepest angle of repose?   angular boulders well-rounded pebbles well-rounded sand angular sand well-rounded boulders

	Mass wasting processes are classified according to the __________.   kind of motion displayed velocity of the movement type of material involved all of the above type of material involved and kind of motion displayed

	The free descent of detached individual rock pieces of any size is called fall.    True  False

	A slope built of angular rock fragments is called a(an) __________.   talus slump slide angle of repose flow

	A movement of fairly coherent material along a well-defined surface is called a __________.   debris flow fall talus slide mudflow

	The most rapid type of mass movement is a(an) __________.   creep earthflow slump debris flow rock avalanche

	A relatively rapid movement of water-rich soil and regolith found primarily in semiarid regions is called __________.   debris flow creep rock slide rock fall slump

	During slump, movement of the material is along flat surfaces.    True  False

	Heavy rainfalls that erode volcanic deposits often produce this type of mass wasting.   lahar rock slides rock fall slump soil creep

	Liquefaction most often occurs in association with __________.   earthquakes heavy rainfall tornadoes volcanic eruptions none of the above

	Liquefaction occurs during an earthquake when water-saturated materials lose their strength and behave as fluidlike masses that flow.    True  False

	The slow movement of soil and regolith caused by expansion and contraction of material is referred to as __________.   slump creep lahar soil slide rockfall

	This type of mass wasting occurs in association with permafrost.   liquefaction slide lahar solifluction slump

	Mass wasting processes are confined to the land.    True  False

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