Of the following statements about beach replenishment, which is/are true?
answer
- Beach NOURISHMENT involves dumping sand on the beach to replace lost sand.
- Beach replenishment is also known as beach nourishment.
- Beach replenishment is expensive because of the huge volume of sand that is necessary to replenish a beach.
question
Of the following statements about longshore transport (longshore drift), which is/are true?
answer
- Longshore transport can change direction depending on which direction the waves approach the beach.
- Longshore transport moves sediment upcoast or downcoast along the beach.
- Longshore transport moves sediment in a zigzag path.
question
Of the following conditions, which help(s) form a well-developed delta?
answer
ALL
question
You own a beachfront lot that has been experiencing erosion due to beach starvation. Your neighbor to the north (up-current) has the same problem, so he gets permission to build a groin just north of your property line. Your response would probably be to __________.
answer
get permission to build a groin of your own near the southern boundary of your property
question
When seafloor spreading rates increase:
answer
there is a rise in sea level.
question
A linear ridge of sediment attached to land at one end might be called a:
answer
Spit
question
The "river of sand" described in our text refers to __________.
answer
longshore transport between the beach and the breaker line
question
Narrow currents flowing across the surf zone toward the open ocean are called:
answer
rip currents
question
Of the following statements about coastal regions and landforms, which is/are true?
answer
ALL EXCEPT:
The nearshore is exposed during low tide each day.
question
Which U.S. coast is being most starved for sediments due to the damming of rivers?
answer
Pacific Coast
question
The section of the coast that extends from normal high tide level to the highest elevation on land that is affected by storm waves is called the:
answer
backshore
question
Geologic evidence suggests that eustatic (global) sea level rises have been caused by
answer
rapid seafloor spreading at divergent plate boundaries
question
Which U.S. coastline has the greatest average loss due to erosion?
answer
Gulf Coast
question
Beach joggers prefer to run on the
answer
beach face
question
All of the following are typically characteristic of erosional shores except
answer
deltas
question
Conditions favorable for the existence of barrier islands occur in the United States
answer
on the Atlantic and Gulf coasts
question
Which of the following landforms shows the greatest erosion rate along United States coasts?
answer
the Mississippi River delta
question
Of the following characteristics or features, which is/are associated with depositional shores?
answer
ALL EXCEPT:
Active tectonic uplift
question
Sediment is supplied to the coastal zone by:
answer
All of the above are sources of sediment in the coastal zone.
question
Emerging shorelines might have all of the following characteristics except:
answer
drowned beaches
question
In terms of erosion protection from wave action, seawalls:
answer
lead to erosion of sediment on their seaward sides.
question
The area of the barrier island complex that would contain thickets and woodlands would be the
answer
barrier flat
question
Which of the following would you expect to find on a summertime beach?
answer
a wide, sandy berm
question
Isostatic movement of a coastline might occur due to:
answer
the removal of a large glacier that rested in that area.
question
A beach is:
answer
a deposit of the shore area.
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