A series of elevated terraces (former wave-cut platforms) along an active plate boundary coast is evidence for correct answers uplift of the continental crust
What cause landslides? correct answers Wildfire, earthquake, poor engineering, freezing and thawing, rain, deforestation
River terrace...
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A series of elevated terraces (former wave-cut platforms) along an active plate boundary coast is
evidence for correct answers uplift of the continental crust
What cause landslides? correct answers Wildfire, earthquake, poor engineering, freezing and
thawing, rain, deforestation
River terraces form by correct answers repeated flooding over several years, uplift of land the
river passing through, downcutting by the river which causes new, lower floodplains to form
Which of the following geologic structures would you expect to see along the gulf coast? correct
answers barrier islands, offshore sand bars, and sand dunes because the gulf coast is a
depositional coast
Barrier islands are typically found correct answers on continental margins that are not also plate
boundaries
In which of these locations do you think the landslide risk is greatest? correct answers California,
Oregon, Washington, Alaska and Hawaii
Which of the following is most likely to cause downslope sliding of soils? correct answers heavy
rain
Sand dunes get their sand correct answers from the beach, by wind
The Edwards Aquifer is developed in what type of rock? correct answers Limestone
By definition, below the water table pores in a sandstone would be correct answers filled with
water
Spring correct answers Intersection of the water table and land surface
Artesian well correct answers Only occurs in a confined aquifer
Cone of depression correct answers Develops around water wells with pumping
Aquifer correct answers A rock with the pore space saturated with water
Aquiclude correct answers A shale layer
A "hydrograph" is best described as a plot of ________. correct answers River discharge (y axis)
against time (x axis).
In general, what kind of rock is most likely to have both high porosity and high permeability?
correct answers Sedimentary
, how does sediment transport in rivers correct answers Flowing water exerts force on sediment,
causing it to be transported, Larger sediment usually moves by rolling and hopping along the
river bed, Coarse sediment moves rarely in most rivers.
What is the probability that a 10 year flood will happen in any given year? correct answers 10%
Which of the following can influence the size of floods? correct answers Wildfire, earthquake,
poor engineering, freezing and thawing, rain, deforestation
Hydraulic gradient of an unconfined aquifer is ________. correct answers The slope of the
groundwater table
The height of the water in a well in an unconfined aquifer indicates correct answers he level of
the water table
Meandering rivers primarily occur where? correct answers In areas of shallow slope with flood
plains
A rock that has large, abundant pores, but these pores are disconnected would have ________.
Correct Answer correct answers high porosity and low permeability
Which of the following would make the best aquifer or oil/gas reservoir? correct answers
Sandstone with many connected pores
All else equal, a larger hydraulic gradient will cause groundwater to flow __________. correct
answers faster
Urbanization makes floods happen sooner and worse by: correct answers Removal of vegetation
Paving street etc
Removal of topsoil
Changing topography
Storm sewer systems
Modification of streams
Impermeable examples correct answers shale, unfractured igneous or metamorphic rock
Rockfall correct answers when loose rocks fall down a steep slope
Landslide correct answers a slide of a large mass of dirt and rock down a mountain or cliff
slump correct answers the downward slipping of a mass of rock or unconsolidated material
moving as a unit along a curved surface
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