What does it mean to "buttress" a landslide? What will be an ideal response?
Buttressing involves loading up the toe area of a landslide in order to counter driving forces from
upslope. This is accomplished by constructing an engineered fill called a buttress fill. For coastal
landslides, the buttress would be armored on its seaward side by large rocks capable of resisting wave
attack. Ideally, buttressing is combined with removal of mass from the upper part of the landslide. This
material may be used to construct the engineered fill lower down. Using this approach, gravitational
driving force is decreased, while simultaneously increasing resisting forces. In essence, the strength of
the lower part of the landslide is increased.
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What did Harry Hess and Robert Dietz suggest the cause of the continents moving was?
A) Convection currents B) Radioactive decay C) Conduction D) None of these choices
Which of the following areas in the United States would most likely experience thunderstorms, hurricanes and tornadoes during the course of one year?
a. Pacific Coast states b. New England states c. Gulf Coast states d. Great Plains states
Which environmental NGO regularly informs subscribers through its website about environmental threats all over the world?
A. Greenpeace B. The Audubon Society C. Friends of the Earth D. The Environmental Defense Fund E. Natural Resources Defense Council
Why does the landform portion of your textbook concentrate on process more than geographic distribution?
What will be an ideal response?