Question 1

________ sediments represent weathered rock and mineral particles eroded mainly from land areas.

Accepted Answer

A) Exogenous 
B) Hydrogenous 
C) Terrigenous 
D) Biogenous 
A) Exogenous 
B) Hydrogenous 
C) Terrigenous 
D) Biogenous

Question 2

Turbidites and siliceous oozes are both biogenous sediments.

Accepted Answer

A) True 
 B)False

Question 3

Which is the deepest ocean trench?

Accepted Answer

A) Aleutian 
B) Kurile-Kamchatka 
C) Mariana 
D) Peru-Chile 
A) Aleutian 
B) Kurile-Kamchatka 
C) Mariana 
D) Peru-Chile

Question 4

Oceanic ridges are elevated compared to the surrounding ocean floor because ________.

Accepted Answer

A) newly formed lithosphere is hotter and therefore less dense than the surrounding rocks 
B) the older, colder lithosphere is less dense and tends to rise 
C) the mantle is pushing up the lithosphere along the ridge 
D) of the shield volcanoes that develop due to seafloor spreading 
A) newly formed lithosphere is hotter and therefore less dense than the surrounding rocks 
B) the older, colder lithosphere is less dense and tends to rise 
C) the mantle is pushing up the lithosphere along the ridge 
D) of the shield volcanoes that develop due to seafloor spreading

Question 5

On the diagram below, match the features to the correct answer for each one.
a)continental volcanic arc 
b)trench 
c)accretionary wedge

Accepted Answer

The answer of On the diagram below, match the features...

Question 6

How were water depths and seafloor bathymetry (submarine topography)determined by the Challenger surveys?

Accepted Answer

A) by early deep sea divers 
B) hand thrown and retrieved weighted lead-lines 
C) multi-beam, towed echo sounders 
D) timing the descent of heavy bricks with sand glasses and listening for the echoes with early hydrophones 
A) by early deep sea divers 
B) hand thrown and retrieved weighted lead-lines 
C) multi-beam, towed echo sounders 
D) timing the descent of heavy bricks with sand glasses and listening for the echoes with early hydrophones

Question 7

What rock types characterize the lowermost ocean crust and the upper mantle respectively, such as the "fossil Moho" preserved in the ophiolite complex of Western Newfoundland?

Accepted Answer

gabbro and

Question 8

A(n)________ is the vast, relatively deep, flat, sediment-covered portion of the deep-ocean basin.

Accepted Answer

The answer of A(n)________ is the vast, relatively deep, flat,...

Question 9

Draw a bathymetric (topographic)profile with accurate widths, depths, and angles labelled that spans the regions of the continental slope, rise, and shelf.

Accepted Answer

shelf: 80 kilometres X 130 met

Question 10

________ are where active volcanism and earthquakes are the rarest.

Accepted Answer

Passive co

Question 11

What is the name of the valley in the central portion of the diagram below?

Accepted Answer

The answer of What is the name of the valley...

Question 12

What is the magma source for mid-ocean ridge basalt?

Accepted Answer

A) decompression melting in the shallowest part of the asthenosphere beneath the ridge 
B) by spontaneous melting in mafic magma chambers within oceanic crust 
C) along block faults by frictional heating deep in the oceanic lithosphere 
D) It all comes from Hawaii then flows out laterally along the ridge system. 
A) decompression melting in the shallowest part of the asthenosphere beneath the ridge 
B) by spontaneous melting in mafic magma chambers within oceanic crust 
C) along block faults by frictional heating deep in the oceanic lithosphere 
D) It all comes from Hawaii then flows out laterally along the ridge system.

Question 13

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

Question 14

On active continental margins, at the toe of the continental slope is there an accretionary wedge of deformed sediments, or a gradual continental rise?

Accepted Answer

The answer of On active continental margins, at the toe...

Question 15

Graded bedding is ________.

Accepted Answer

A) a Canadian quality-rating scale for different brands of mattresses 
B) an upwards decrease in clastic particle size within a single sediment layer 
C) an accumulation of sedimentary beds beginning with sandy beds at the bottom and ending with clayey beds at the top 
D) the layering in coral limestone produced by the combined chemical action of living coral animals and submarine, hot spring emissions 
A) a Canadian quality-rating scale for different brands of mattresses 
B) an upwards decrease in clastic particle size within a single sediment layer 
C) an accumulation of sedimentary beds beginning with sandy beds at the bottom and ending with clayey beds at the top 
D) the layering in coral limestone produced by the combined chemical action of living coral animals and submarine, hot spring emissions

Question 16

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

Question 17

You are doing a hydrographic survey by the Sand Heads Light, off the mouth of the Fraser River in very silty green water.You lower a bar to check its reflection and calibrate your sounder.You find that the fresh river water has dropped the speed of sound to 1483 m/sec.If the bottom registers at 15 milliseconds (0.015 sec), how deep is the top of the Fraser delta? Use the equation: depth (m)= 0.5 * (1500 m/s * total 2-way travel time in sec)

Accepted Answer

A) 11.12 metres 
B) 11.25 metres 
C) 22.25 metres 
D) 2250 metres 
A) 11.12 metres 
B) 11.25 metres 
C) 22.25 metres 
D) 2250 metres

Question 18

Many of the seamounts form at or near mid ocean ridges.

Accepted Answer

A) True 
 B)False

Question 19

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases.
-Choose the option that does not fit the pattern.

Accepted Answer

A) trench 
B) submarine canyon 
C) abyssal plain 
D) seamount 
A) trench 
B) submarine canyon 
C) abyssal plain 
D) seamount

Question 20

A(n)________ marks the site where old, oceanic lithosphere begins its descent into a subduction zone.

Accepted Answer

The answer of A(n)________ marks the site where old, oceanic...

________ sediments represent weathered rock and mineral particles eroded mainly from land areas.

Turbidites and siliceous oozes are both biogenous sediments.

Which is the deepest ocean trench?

Oceanic ridges are elevated compared to the surrounding ocean floor because ________.

On the diagram below, match the features to the correct answer for each one. a)continental volcanic arc b)trench c)accretionary wedge

How were water depths and seafloor bathymetry (submarine topography)determined by the Challenger surveys?

What rock types characterize the lowermost ocean crust and the upper mantle respectively, such as the "fossil Moho" preserved in the ophiolite complex of Western Newfoundland?

A(n)________ is the vast, relatively deep, flat, sediment-covered portion of the deep-ocean basin.

Draw a bathymetric (topographic)profile with accurate widths, depths, and angles labelled that spans the regions of the continental slope, rise, and shelf.

________ are where active volcanism and earthquakes are the rarest.

What is the name of the valley in the central portion of the diagram below?

What is the magma source for mid-ocean ridge basalt?

An echo sounder operates by measuring the time required for a ________.

On active continental margins, at the toe of the continental slope is there an accretionary wedge of deformed sediments, or a gradual continental rise?

Graded bedding is ________.

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

Many of the seamounts form at or near mid ocean ridges.

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

A(n)________ marks the site where old, oceanic lithosphere begins its descent into a subduction zone.

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earth's Interior

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 11: The Ocean Floor

________ sediments represent weathered rock and mineral particles eroded mainly from land areas.

Turbidites and siliceous oozes are both biogenous sediments.

Which is the deepest ocean trench?

Oceanic ridges are elevated compared to the surrounding ocean floor because ________.

On the diagram below, match the features to the correct answer for each one. a)continental volcanic arc b)trench c)accretionary wedge

How were water depths and seafloor bathymetry (submarine topography)determined by the Challenger surveys?

What rock types characterize the lowermost ocean crust and the upper mantle respectively, such as the "fossil Moho" preserved in the ophiolite complex of Western Newfoundland?

A(n)________ is the vast, relatively deep, flat, sediment-covered portion of the deep-ocean basin.

Draw a bathymetric (topographic)profile with accurate widths, depths, and angles labelled that spans the regions of the continental slope, rise, and shelf.

________ are where active volcanism and earthquakes are the rarest.

What is the name of the valley in the central portion of the diagram below?

What is the magma source for mid-ocean ridge basalt?

An echo sounder operates by measuring the time required for a ________.

On active continental margins, at the toe of the continental slope is there an accretionary wedge of deformed sediments, or a gradual continental rise?

Graded bedding is ________.

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

Many of the seamounts form at or near mid ocean ridges.

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

A(n)________ marks the site where old, oceanic lithosphere begins its descent into a subduction zone.

An Introduction to Geology and Plate Tectonics

Minerals: The Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earth's Interior

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