Question 1

Which one of the following statements regarding turbidity currents is true?

Accepted Answer

A)  They are shaken loose by earthquakes and move from abyssal plains to the continental shelf. 
B)  They flow down submarine canyons to estuaries at the edge of the continental shelf. 
C)  The moving sediment- laden waters are less dense than the surrounding seawater. 
D)  They form on the continental shelf and flow down submarine canyons to deeper water. 
A)  They are shaken loose by earthquakes and move from abyssal plains to the continental shelf. 
B)  They flow down submarine canyons to estuaries at the edge of the continental shelf. 
C)  The moving sediment- laden waters are less dense than the surrounding seawater. 
D)  They form on the continental shelf and flow down submarine canyons to deeper water.

Question 2

The geologic process responsible for the most rugged relief on the seabed of a passive continental margin is ________.

Accepted Answer

A)  active explosive submarine volcanism 
B)  glacial erosion and deposition modified by rising sea levels. 
C)  dredging and bottom dragging in shelf fisheries for scallops and groundfish 
D)  deposits of major river deltas 
A)  active explosive submarine volcanism 
B)  glacial erosion and deposition modified by rising sea levels. 
C)  dredging and bottom dragging in shelf fisheries for scallops and groundfish 
D)  deposits of major river deltas

Question 3

What was the latest technological addition to seafloor mapping, developed in response to mapping the ocean floor for national security, resource development, and directing seabed cable and pipeline crossings?

Accepted Answer

A)  fleets of remotely telemetered, miniature drifter buoys 
B)  swath echo sounding by mechanical multi- beam sonar 
C)  walking it off one step at a time by the "Pirates of the Caribbean" 
D)  airborne sounding methods, by overflying the oceans 
A)  fleets of remotely telemetered, miniature drifter buoys 
B)  swath echo sounding by mechanical multi- beam sonar 
C)  walking it off one step at a time by the "Pirates of the Caribbean" 
D)  airborne sounding methods, by overflying the oceans

Question 4

Why are the East Pacific Rise, the Gorda and Juan de Fuca Ridges all the way at the eastern side of the Pacific Ocean?

Accepted Answer

A)  The geophysicists and oceanographers haven't got a clue and mapped them in the wrong location. 
B)  They are a really young tectonic features and have just jumped to start rifting on this side of the Pacific Ocean, which used to rift down it's middle near Hawaii. 
C)  The spreading in the Pacific is asymmetric and new ocean crust is mainly made on the western side of the ridge system. 
D)  Half of the Pacific ocean basin has been overridden by or subducted beneath the plates of the Americas, and the Pacific plate is getting smaller. 
A)  The geophysicists and oceanographers haven't got a clue and mapped them in the wrong location. 
B)  They are a really young tectonic features and have just jumped to start rifting on this side of the Pacific Ocean, which used to rift down it's middle near Hawaii. 
C)  The spreading in the Pacific is asymmetric and new ocean crust is mainly made on the western side of the ridge system. 
D)  Half of the Pacific ocean basin has been overridden by or subducted beneath the plates of the Americas, and the Pacific plate is getting smaller.

Question 5

A(n)_________ is a low lying, coral reef island perched above a sunken, truncated volcano.

Accepted Answer

A)  guyot 
B)  atoll 
C)  seamount 
D)  re- entry cone 
A)  guyot 
B)  atoll 
C)  seamount 
D)  re- entry cone

Question 6

An echo sounder operates by measuring the time required for a___________ .

Accepted Answer

A)  light beam to travel from a satellite at a known altitude to the sea bottom and back 
B)  sound pulse to travel from a ship or survey towfish to the seafloor and back 
C)  radar beam to travel from a ship to the seafloor and back 
D)  radar beam to travel from a harbour patrol boat to a fuzz- buster on a speeding yacht 
A)  light beam to travel from a satellite at a known altitude to the sea bottom and back 
B)  sound pulse to travel from a ship or survey towfish to the seafloor and back 
C)  radar beam to travel from a ship to the seafloor and back 
D)  radar beam to travel from a harbour patrol boat to a fuzz- buster on a speeding yacht

Question 7

What is the most abundant sediment type on the deep ocean floor for most locations in the world?

Accepted Answer

A)  carbonate ooze 
B)  sand 
C)  mud 
D)  diatom and radiolarian ooze 
A)  carbonate ooze 
B)  sand 
C)  mud 
D)  diatom and radiolarian ooze

Question 8

The _______________is a gently sloping submerged surface that extends from the shoreline to the deep- ocean basin.

Accepted Answer

The answer of The _______________is a gently sloping submerged surface...

Which one of the following statements regarding turbidity currents is true?

The geologic process responsible for the most rugged relief on the seabed of a passive continental margin is ________.

What was the latest technological addition to seafloor mapping, developed in response to mapping the ocean floor for national security, resource development, and directing seabed cable and pipeline crossings?

Why are the East Pacific Rise, the Gorda and Juan de Fuca Ridges all the way at the eastern side of the Pacific Ocean?

A(n)_________ is a low lying, coral reef island perched above a sunken, truncated volcano.

An echo sounder operates by measuring the time required for a___________ .

What is the most abundant sediment type on the deep ocean floor for most locations in the world?

The _______________is a gently sloping submerged surface that extends from the shoreline to the deep- ocean basin.

An Introduction to Geology and Plate Tectonics

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earths Interior

The Ocean Floor

Plate Tectonics: the Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: the Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters

Exam 2: Minerals: the Building Blocks of Rocks

Which one of the following statements regarding turbidity currents is true?

The geologic process responsible for the most rugged relief on the seabed of a passive continental margin is ________.

What was the latest technological addition to seafloor mapping, developed in response to mapping the ocean floor for national security, resource development, and directing seabed cable and pipeline crossings?

Why are the East Pacific Rise, the Gorda and Juan de Fuca Ridges all the way at the eastern side of the Pacific Ocean?

A(n)_________ is a low lying, coral reef island perched above a sunken, truncated volcano.

An echo sounder operates by measuring the time required for a___________ .

What is the most abundant sediment type on the deep ocean floor for most locations in the world?

The _______________is a gently sloping submerged surface that extends from the shoreline to the deep- ocean basin.

An Introduction to Geology and Plate Tectonics

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earths Interior

The Ocean Floor

Plate Tectonics: the Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: the Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Deserts and Winds

Shorelines

Mineral and Energy Resources

Filters