(solution) Need answers for the following oceanography study questions,

Need answers for the following oceanography study questions, Please provide accurate answers

1. Low-lying flat areas that are either saturated by water or covered by water for at least part of the year are known as __________.

   barrier islands

   deltas

   wetlands

   levees

2 points   

QUESTION 2

1. Turbidity currents __________.

   have been known to cut telegraph cables on the sea floor

   can flow relatively long distances

   are sufficiently powerful to erode submarine canyons on the continental slope

   are denser than sea water

   All of the above are correct.

2 points   

QUESTION 3

1. Sand grains are __________ particles of gravel.

   larger than

   the same size as

   smaller than

2 points   

QUESTION 4

1. The oldest sediments on the ocean floor are found __________.

   at spreading centers

   near divergent plate boundaries

   near the edge of ocean basins and away from spreading centers

   where sediment deposits are thinnest

   overlying the youngest oceanic crust

2 points   

QUESTION 5

1. The most common rocks composing Earth's crust are igneous and they are made up of mostly __________ minerals.

   carbonate

   ferromagnesian

   feldspar

   silicate

   clay

2 points   

QUESTION 6

1. Most biogenous sediments are made up of __________.

   calcium carbonate or silica

   clay

   water

   feldspar

   None of the above is correct.

2 points   

QUESTION 7

1. The rate at which calcium carbonate materials dissolve in seawater __________ with __________ water temperature.

   increases. . . . .falling

   increases. . . . .rising

   decreases. . . . .falling

2 points   

QUESTION 8

1. The driving force for turbidity currents is ________.

   astronomical tides

   glacial ice

   rising sea level

   gravity

2 points   

QUESTION 9

1. Typical rate of accumulation of sediments on the continental shelf and slope range around ________ in 1000 years.

   0.5-1 cm

   2-5 cm

   10-40 cm

   2-4 m

   12 m

2 points   

QUESTION 10

1. Manganese nodules are marine sediments that are __________.

   chemically precipitated from sea water

   found on ocean bottoms far from shore, away from lithogenous sedimentation

   found under relatively unproductive regions so biogenous sedimentation is low

   found in all the ocean basins except the Arctic Ocean

   All of the above are correct.

 

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Sep 13, 2020

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