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Chapter 8

Concept #3 Quiz

Concept #3 Quiz
Choose the best possible answer to the following questions about Key Concept 3 "Classification of mass wasting processes."

This activity contains 7 questions.

	Match the classification of mass wasting with the appropriate description: Using the pull-down menus, match each item in the left column to the corresponding item in the right column. what is involved interior to the moving material the manner in which material actually makes its way downslope the speed, and therefore the destructive nature of the mass wasting 1.1 rate of movement A B C 1.2 type of motion A B C 1.3 type of material A B C

	Match the type of mass wasting with the appropriate label on the diagram. For each item below, use the pull-down menu to select the letter that labels the correct part of the image. 2.1 falls A B C D E 2.2 earthflow associated with a slump A B C D E 2.3 mudflow A B C D E 2.4 slide A B C D E 2.5 earthflow A B C D E

	Match the following types of mass wasting with the appropriate description: Using the pull-down menus, match each item in the left column to the corresponding item in the right column. when material acts as a viscous fluid as it moves downslope a long distance over land free motion of detached pieces of any size when material remains fairly coherent as it moves downslope a short distance on a single curved surface 3.1 a flow A B C 3.2 a slide A B C 3.3 a fall A B C

	Match the description with the appropriate label on the diagram of mass wasting types. For each item below, use the pull-down menu to select the letter that labels the correct part of the image. 4.1 freefall of loosened blocks A B C D E F 4.2 fluid-like downslope flow of unconsolidated material A B C D E F 4.3 surface of failure allowing a coherent block to move downslope A B C D E F 4.4 site of sliding if sediment is water-saturated A B C D E F 4.5 rapid spreading of mud after rapid flow A B C D E F 4.6 muddy flow at the toe of a slumped section A B C D E F

	What is “talus” and which type of mass wasting produces it?   a pile of sand at the beach caused by the fact that it cannot withstand an outward slope of more than 35 degrees a large tongue-like protrusion at the toe of a slide due to the water-saturated nature of the soil a pile of rock at the base of a slope caused by the accumulation of rock falls an outwash of a mudflow at the base of a valley caused by the rapid movement of water-saturated soil

	What triggers each type of mass wasting? Using the pull-down menus, match each item in the left column to the corresponding item in the right column. when materials become saturated with water slopes composed of rock are oversteepened or dislodged by freeze-thaw when inclined strata become weakened by water or other means 6.1 flows A B C 6.2 slides A B C 6.3 falls A B C

	What is an “avalanche,” and how does it move so fast downslope?   a moderately destructive flow of ice and water that picks up debris that lubricates its bottom layer the most rapid type of movement since the material literally floats on air compressed by the flow itself the slowest type of mass wasting since it is achieved by the gradual motion of soil and regolith over long periods the most destructive mass wasting that moves downhill on a layer of water and ice

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