Exam 15: Weathering and Mass Wasting

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In general, the more joints and bedding planes rock has, the more resistant it is to weathering. ​

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The slow migration of particles along the slope to successively lower elevations as the result of some kind of heaving process is called _______________. ​

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creep

Fast mass wasting events involving cohesive or semicohesive units of Earth materials are called _____. ​

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C

Which of the following is considered a form of physical weathering? ​

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The presence of talus is a good sign that _____ is occurring. ​

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It is possible for a single region to have joints oriented in more than one direction. ​

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Alternating wetting and drying can facilitate soil creep. ​

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What are some factors that determine where or when a fast mass wasting event could occur? ​

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Broken fragments of rock that separate from the original rock mass are called _____. ​

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Rust is an example of _____. ​

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The expansion cracks that form during unloading are best described as faults. ​

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Mudflows of volcanic ash are referred to as _____. ​

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Freeze thaw weathering is an example of _______________ weathering. ​

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Hydration weathering involves the _____. ​

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Biological weathering includes processes that are fundamentally physical or chemical in nature. ​

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Two or more parallel joints in the same area are referred to as a(n)_______________.(two words)​

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The angle of repose for a talus slope commonly lies between 60° and 65°. ​

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Avalanches _____. ​

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A large, rapid mass wasting event that is difficult to classify is often called a(n)_____. ​

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Angular, broken clasts that pile up at the base of a cliff subject to rockfall are referred to as _______________. ​

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