Ocean 115 - Introduction to Oceanography » Spring 2023 » Week 4 Bathymetry Post-reading Quiz

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Question #1
What marks the true division between continents and oceans?
A.   Coastal deep-sea trenches
B.   Granite-basalt transitions
C.   Coastlines
D.   Abyssal plains
Question #2
What characteristic of continental crust accounts for more than half of Earth's solid surface being below sea level?
A.   Continental crust is denser than oceanic crust.
B.   Continental crust is less dense than oceanic crust.
C.   Continental crust is both less dense and thinner than oceanic crust.
D.   Continental crust is thinner than oceanic crust.
Question #3
Passive margins are also referred to as ____.
A.   Basin-type margins
B.   Pacific-type margins
C.   Atlantic-type margins
D.   Converging-type margins
Question #4
Most geologists believe that submarine canyons have been formed by ____
A.   Volcanoes
B.   Subduction
C.   Sea level changes
D.   Turbidity currents
Question #5
What process gives trenches their unique arc-shaped depressions?
A.   Subduction
B.   Turbidity
C.   Spreading
D.   Erosion
Question #6
Which of the following features is typically associated with divergent plate motion?
A.   Abyssal plain
B.   Continental shelf
C.   Oceanic ridge
D.   Deep-sea trench
Question #7
Which of the following contribute to guyot formation?
A.   submarine volcanism, erosion, movement along fracture zone
B.   submarine volcanism, erosion, thermal contraction
C.   submarine volcanism, movement along fracture zone, thermal contraction
D.   movement along fracture zone, erosion, thermal contraction
Question #8
Which of the following are true of submarine canyons?
A.   They cut through sediments of the continental shelf, slope and rise. They begin at mid-ocean ridges and stretch out onto the abyssal plain They spill out onto the deep seafloor as abyssal fans.
B.   They begin at mid-ocean ridges and stretch out onto the abyssal plain. They are carved by turbidity currents. They spill out onto the deep seafloor as abyssal fans.
C.   They cut through sediments of the continental shelf, slope and rise. They begin at mid-ocean ridges and stretch out onto the abyssal plain. They are carved by turbidity currents.
D.   They cut through sediments of the continental shelf, slope and rise. They are carved by turbidity currents. They spill out onto the deep seafloor as abyssal fans.
Question #9
Which features are found in association with subduction zones?
A.   hot spot volcanoes, arc volcanoes, shallow, intermediate and sometimes deep earthquakes
B.   trenches, arc volcanoes, shallow, intermediate and sometimes deep earthquakes
C.   trenches, hot spot volcanoes, shallow, intermediate and sometimes deep earthquakes
D.   trenches, arc volcanoes, hot spot volcanoes
Question #10
Which of the following is most sensitive to changes in sea level?
A.   Hydrothermal vents
B.   Continental shelf
C.   Continental slope
D.   Continental rise

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