Question 1

________ develop where oceanic lithosphere bends downward and sinks into the mantle.

Accepted Answer

A) Submarine canyons 
B) Abyssal seamounts 
C) Deep ocean trenches 
D) Rift valleys on mid-ocean ridges 
A) Submarine canyons 
B) Abyssal seamounts 
C) Deep ocean trenches 
D) Rift valleys on mid-ocean ridges C

Question 2

Which of the following is associated with ocean ridges?

Accepted Answer

A) rift zones 
B) mountainous topography 
C) volcanic structures 
D) all of these 
A) rift zones 
B) mountainous topography 
C) volcanic structures 
D) all of these D

Question 3

Which of the following generally has the lowest surface slope?

Accepted Answer

A) continental slope 
B) continental rise 
C) continental shelf 
D) beach shoreface 
A) continental slope 
B) continental rise 
C) continental shelf 
D) beach shoreface C

Question 4

Manganese nodules are an example of ________ sediment.

Accepted Answer

The answer of Manganese nodules are an example of ________...

Question 5

The best definition of the outer edge of the continental shelf is that point where ________.

Accepted Answer

A) the gradient becomes very gentle 
B) the water depth reaches 100 fathoms 
C) it meets an oceanic ridge 
D) a rapid steepening of the gradient occurs 
A) the gradient becomes very gentle 
B) the water depth reaches 100 fathoms 
C) it meets an oceanic ridge 
D) a rapid steepening of the gradient occurs

Question 6

Turbidites and siliceous oozes are both biogenous sediments.

Accepted Answer

A) True 
 B)False

Question 7

Why would a large concrete producing company be interested in the sea bed?

Accepted Answer

A) as a source of lime from sea shells 
B) as a source of mud to mix with limestone to make Portland cement 
C) They can rape the sea bed without being prosecuted like they would in operating a quarry or gravel pit improperly. 
D) as a source of sand and gravel 
A) as a source of lime from sea shells 
B) as a source of mud to mix with limestone to make Portland cement 
C) They can rape the sea bed without being prosecuted like they would in operating a quarry or gravel pit improperly. 
D) as a source of sand and gravel

Question 8

It is thought that submarine canyons on the continental slope have been generated by ________.

Accepted Answer

A) streams when sea level was much lower than it is today 
B) streams when sea level was much higher than it is today 
C) a submarine glaciations 
D) turbidity currents 
A) streams when sea level was much lower than it is today 
B) streams when sea level was much higher than it is today 
C) a submarine glaciations 
D) turbidity currents

Question 9

Ocean floor topography can be estimated from space using ________.

Accepted Answer

A) high resolution measurements of the earth's magnetic field 
B) laser beams that penetrate to the sea floor 
C) radar pulses that bounce off the ocean surface 
D) powerful sound waves that echo to the satellite 
A) high resolution measurements of the earth's magnetic field 
B) laser beams that penetrate to the sea floor 
C) radar pulses that bounce off the ocean surface 
D) powerful sound waves that echo to the satellite

Question 10

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 harbor 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 travels from a ship 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 harbor 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 travels from a ship to the seafloor and back

Question 11

The 2010 deep water horizon oil spill in the Gulf of Mexico was a tragedy brought on in part by new technology allowing development of oil and gas reserves in deep water.Given the scope of the spill,why would companies take a risk of such a disaster given the scope of the litigation following the disaster?

Accepted Answer

A) They didn't care about the risk,they just drove forward. 
B) The oil and gas industry is poor at assessing risk,and didn't understand the risk. 
C) The potential profit is so large from a major oil find that the companies take the risk,try to use all cautions to minimize risk,but sometimes fail. 
D) They just assume their lawyers can win any lawsuit,regardless of the disaster. 
A) They didn't care about the risk,they just drove forward. 
B) The oil and gas industry is poor at assessing risk,and didn't understand the risk. 
C) The potential profit is so large from a major oil find that the companies take the risk,try to use all cautions to minimize risk,but sometimes fail. 
D) They just assume their lawyers can win any lawsuit,regardless of the disaster.

Question 12

The deepest point in the ocean is in the Indonesian trench,off Sumatra,where the 2004 Earthquake occurred.

Accepted Answer

A) True 
 B)False

Question 13

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 lithosphere...

Question 14

Submerged,flat-topped seamounts are known as guyots.

Accepted Answer

A) True 
 B)False

Question 15

Most of our table salt comes from ________.

Accepted Answer

A) salt taken from mines 
B) salt obtained by evaporating seawater in dry climates 
C) combining the metal sodium and the nonmetal chlorine gas in a chemical reaction vessel to make pure NaCl 
D) China 
A) salt taken from mines 
B) salt obtained by evaporating seawater in dry climates 
C) combining the metal sodium and the nonmetal chlorine gas in a chemical reaction vessel to make pure NaCl 
D) China

Question 16

Which ocean has the greatest average depth?

Accepted Answer

A) Atlantic 
B) Pacific 
C) Indian 
D) Arctic 
A) Atlantic 
B) Pacific 
C) Indian 
D) Arctic

Question 17

Ocean ridges form because ________.

Accepted Answer

A) rocks bulge up in ridges along transform faults associated with the ridge 
B) they are a broad seafloor highland formed by sea floor spreading 
C) they are submarine collisional mountain belts,forming submarine mountains that haven't yet risen from the sea floor 
D) they are chains of volcanos,like the Hawaiian Islands,that form along hot spots 
A) rocks bulge up in ridges along transform faults associated with the ridge 
B) they are a broad seafloor highland formed by sea floor spreading 
C) they are submarine collisional mountain belts,forming submarine mountains that haven't yet risen from the sea floor 
D) they are chains of volcanos,like the Hawaiian Islands,that form along hot spots

Question 18

Seamounts ________.

Accepted Answer

A) are a special type of oceanic trench 
B) are volcanoes that form on the ocean floor 
C) form only in the Pacific Ocean basin 
D) are submarine canyons found near Australia 
A) are a special type of oceanic trench 
B) are volcanoes that form on the ocean floor 
C) form only in the Pacific Ocean basin 
D) are submarine canyons found near Australia

Question 19

Abyssal plains are very flat because ________.

Accepted Answer

A) basalt volcanos on the seafloor produce little terrain 
B) sediments accumulate to cover the seafloor topography 
C) they have flat faults,the form flat,planar topography 
D) they are not really flat; it is just that there is no data so they are shown as flat 
A) basalt volcanos on the seafloor produce little terrain 
B) sediments accumulate to cover the seafloor topography 
C) they have flat faults,the form flat,planar topography 
D) they are not really flat; it is just that there is no data so they are shown as flat

Question 20

Concerning the distribution of land and water,which of the following statements is true?

Accepted Answer

A) The percentage of land and water is about the same in both the Northern and Southern Hemispheres. 
B) The Southern Hemisphere has much more water surface than the Northern Hemisphere. 
C) The Northern Hemisphere has much more water surface than the Southern Hemisphere. 
D) None of the above is true. 
A) The percentage of land and water is about the same in both the Northern and Southern Hemispheres. 
B) The Southern Hemisphere has much more water surface than the Northern Hemisphere. 
C) The Northern Hemisphere has much more water surface than the Southern Hemisphere. 
D) None of the above is true.

Exam 13: The Ocean Floor

________ develop where oceanic lithosphere bends downward and sinks into the mantle.

Which of the following is associated with ocean ridges?

Which of the following generally has the lowest surface slope?

Manganese nodules are an example of ________ sediment.

The best definition of the outer edge of the continental shelf is that point where ________.

Turbidites and siliceous oozes are both biogenous sediments.

Why would a large concrete producing company be interested in the sea bed?

It is thought that submarine canyons on the continental slope have been generated by ________.

Ocean floor topography can be estimated from space using ________.

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

The deepest point in the ocean is in the Indonesian trench,off Sumatra,where the 2004 Earthquake occurred.

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

Submerged,flat-topped seamounts are known as guyots.

Most of our table salt comes from ________.

Which ocean has the greatest average depth?

Ocean ridges form because ________.

Seamounts ________.

Abyssal plains are very flat because ________.

Concerning the distribution of land and water,which of the following statements is true?

Introduction to Earth Science

Matter and Minerals

Rocks: Materials of the Solid Earth

Weathering, soil, and Mass Wasting

Running Water and Groundwater

Glaciers, deserts, and Wind

Plate Tectonics: a Scientific Revolution Unfolds

Earthquakes and Earths Interior

Volcanoes and Other Igneous Activity

Crustal Deformation and Mountain Building

Geologic Time

Earths Evolution Through Geologic Time

Ocean Water and Ocean Life

The Dynamic Ocean

The Atmosphere: Composition,structure,and Temperature

Moisture, clouds, and Precipitation

Air Pressure and Wind

Weather Patterns and Severe Weather

World Climates and Global Climate Change

Origin of Modern Astronomy

Touring Our Solar System

Light,astronomical Observations,and the Sun

Beyond Our Solar System

Filters