1. The Mississippi Delta is___________-dominated. a) river b) wave c) tide d) st
ID: 283817 • Letter: 1
Question
1. The Mississippi Delta is___________-dominated.
a) river b) wave c) tide d) storm
2. Sediment volume delivered by a river to the coast will be greatest where the
climate is:
a) arid b) seasonal c) everwet
3. Delta-switching is an autocyclic mechanism that causes
a) local transgressions and regressions
b) global transgressions and regressions
c) crustal rebound
d) no problems for the US Army Corps of Engineers
4. A mesotidal coast has a tidal range of _________meters.
a) 1-2 b) 0-2 c) 2-4 d) 4-6 e) 6-10
5. If the wavelength of wind-driven waves is 20 m, wave base will be _______m.
a) 6 b) 14 c) 20 d) 10 e) 40
6. Wind fetch will be greatest for which of the following
a) Pacific Ocean b) Lake Michigan c) Gulf of Mexico d) Red Sea
7. Flaser bedding would be most likely to form in this environment:
a) foreshore b) shoreface c) tidal inlet d) tidal flat
8. Deltas are not found along the U.S. Atlantic coast at the present time due to:
a) temperate climate
b) high wave energy
c) high tidal energy
d) eustatic rise in sea level
e) everwet climate
9. If river outflow is less dense than the basin water, this will occur:
a) hyperpycnal flow
b) hypopyncal flow
c) homopycnal flow
d) Gilbert type delta development
10. Friction-dominated river mouths occur where
a) the water is shallow
b) the water is deep
c) rivers enter fresh water
d) rivers enter salt water
e) flow velocity is high
11. This delta division is the equivalent of the shoreface in barrier island systems
a) prodelta b) delta front c) lower delta plain d) foreshore
12. Which of the flowing would not produce a coarsening upward sequence:
a) prograding river-dominated delta
b) prograding barrier island
c) prograding tidal flats
d) all of the above
13. Well-developed interdistributary bays would be associated with:
a) back barrier systems
b) river-dominated deltas
c) estuaries
d) wave-dominated deltas
e) tide-dominated deltas
14. This tide produces landward flow:
a) flood b) ebb c) spring d) neap
15. The thickest clay-draped layers in tidal bundles are produced by _______tides:
a) flood b) ebb c) spring d) neap
15. Time-velocity asymmetry inhibits the development of:
a) flood-tidal deltas
b) flaser bedding
c) hummocky cross-stratification
d) herringbone cross-lamination
16. The upper end of an estuary is dominated by _________ processes.
a) fluvial b) wave-generated c) tide-generated
17. Rapid accumulation of mud occurs in the central part of estuaries due to
a) photosynthesis b) density inversion c) flocculation d) none of these
18. Symmetric wave ripples and hummocky cross-stratification would be mostly
likely to form in the:
a) foreshore b) offshore c) shoreface d) offshore-shoreface transition
19. Coast-parallel cross-bedding with Skolithos type burrows would be typically
formed in this zone:
a) upper shoreface b) foreshore c) offshore-shoreface transition d) offshore
20. Well-sorted, coarse-skewed sands with gently inclined, seaward dipping
laminations would be likey to form in this zone:
a) upper shoreface b) foreshore c) offshore-shoreface transition d) offshore
21. The upper tidal flat is dominated by
a) flaser bedding
b) tabular planar cross-bedding
c) peat
d) mud
e) wavy bedding
22. The middle tidal flat is dominated by:
a) flaser bedding
b) tabular planar cross-bedding
c) peat
d) mud
e) wavy bedding
23. The supratidal zone has channels that are active during
a) neap tides
b) storms
c) the daytime
d) all times
24. A tidal meander will produce point bars that contain larger amounts of
_______compared to fluvial point bars.
a) gravel b) sand c) mud d) cross-beds
25. Tidal flats are most likely to be an important part of
(circle all that apply)
a) river-dominated deltas
b) back-barrier environments
c) strand-plain systems
d) estuaries
26. A main reason that Mississippi River has a delta today:
(circle all that apply)
a) large fetch
b) narrow shelf
c) large drainage basin
d) macotidal coast
27. Most likely to have numerous sand bars oriented perpendicular to shoreline:
a) wave-dominated delta
b) tide-dominated delta
c) river-dominated delta
d) wave-dominated estuary
Explanation / Answer
Question 1
Answer is a) river
The Mississippi Delta is river dominated in USA.
It is also known as bird foot delta because of it shape.
It is 7th largest river delta on earth.
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