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WorksheetsMarine Sediments
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
How many different marine sediment types do we distinguish?
a)
2
b)
3
c)
4
d)
5
2.
What process creates lithogenous sediments?
a)
Precipitation from seawater
b)
Weathering and erosion
c)
Dissolution of carbonate shells
d)
Evaporation
3.
On the whole, what is the most important mechanism of transporting continental lithogenous sediments to the ocean?
a)
Wind
b)
Flowing water
c)
Glaciers and icebergs
d)
Gravity (mass flows)
4.
Pelagic deposits form
a)
in deep ocean basins.
b)
on the continental shelf.
c)
on the continental slope.
d)
in warm shallow water.
5.
Beach deposits are an example of
a)
hydrogenous sediment.
b)
cosmogenous sediment.
c)
biogenous sediment.
d)
lithogenous sediment.
6.
Which of the following organisms produce calcium carbonate shells (tests)?
a)
Coccolithophores and radiolarians
b)
Radiolarians and diatoms
c)
Coccolithophores and foraminifers
d)
Foraminiers and diatoms
7.
Evaporites are examples of
a)
lithogenous sediments.
b)
hydrogenous sediments.
c)
biogenous sediments.
d)
cosmogenous sediments.
8.
In which environment do neritic deposits not form?
a)
Close to the shore.
b)
In deep ocean basins.
c)
On the continental shelf.
d)
On the continental slope.
9.
Manganese nodules belong to
a)
lithogenous sediments.
b)
biogenous sediments.
c)
hydrogenous sediments.
d)
cosmologeous sediments.
10.
Seawater is
a)
saturated with respect to silica.
b)
oversaturated with respect to silica.
c)
undersaturated with respect to silica.
d)
supersaturated with respect to silica.
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