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Ocn test Questions and Answers Graded A+ 2023
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Exam of 3 pages for the course OCN at OCN (Ocn test)
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Ocn testwhat are the 3 basic types of shorelines in NC determined by? - answer availability
of sand,
drainage system,
underlying geology
what are the 3 basic types of shorelines? - answer simple barrier island,
complex barrier island,
headland beach
what is the most common type of beach in the world? - answer headland beach
simple vs complex barrier island - answer simple: small sand supply, long and
narrow barriers, young, 70% of nc coast
complex: abundant sand supply, high and wide barriers, older, 25% of nc coast
what is the other 5% of nc coast made up of? - answer narrow headland beaches
perched upon older rock features, only in southern nc
what is the most important control? - answer supply
what 3 pre-existing factors determine how much sediment one beach may get over
another? - answer location relative to sand source,
paleo-topography and composition,
physical coastal dynamics
together, sediment supply and the rate of relative sea-level rise determine what? -
answer the evolution of a barrier
what are 4 potential new sources of sand? - answer flood-tide and ebb-tide deltas,
old river sand and gravel deposits on shelf,
shoals,
older sediments offshore of beach
storm surge is a critial process to what and what barriers? - answer low and narrow
areas adjacent to inlet that are occupied by water during higher than normal water flow
scenarios - answer IHZ (inlet hazard zone)
form the foundation of the barrier to migrate onto as sea level rises - answer FTD
(flood-tide deltas)
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