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Online Quizzing
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1

Erosional processes that modify marine structures include:
A)waves
B)currents
C)wind
D)chemical reactions
E)a, b, and d above
2

Which of the following is a part of the continental margin?
A)the shelf
B)the slope
C)the shelf break
D)the rise
E)all of the above
3

The steepest part of the continental margin is the:
A)shelf break
B)slope
C)shelf
D)rise
E)none of the above
4

Seamounts are objects that are taller than:
A)500 m
B)1500 m
C)1000 m
D)1200 m
E)400 m
5

The abyssal plain covers what percentage of Earth's surface?
A)30
B)50
C)10
D)75
E)15
6

Sediment that is composed of particles originating from organisms is called:
A)lithogenous
B)cosmogenous
C)hydrogenous
D)biogenous
E)equestrian
7

The final stage in the life of a coral reef is the formation of:
A)a fringing reef
B)an atoll
C)a barrier reef
D)a guyot
E)a lagoon
8

The combined length of the ridge system in the oceans is about:
A)10,000 km
B)50,000 km
C)65,000 km
D)30,000 km
E)45,000 km
9

Siliceous oozes are examples of ____________ sediments.
A)hydrogenous
B)biogenous
C)cosmogenous
D)terrigenous
E)lithogenous
10

Deep-ocean sediment accumulates at the rate of about _________ cm/1000 years.
A)10 - 25
B)5 - 20
C)30 - 40
D)12 - 15
E)0.5 - 1.0





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