Oceanography Final Exam(100% Verified)
71% correct answersWhat percent of the Earth's surface is covered by oceans?
78% nitrogen, 21% oxygen correct answersWhat are the two most abundant gases in the
atmosphere? What is the percentage of each by volume?
Infiltration correct answersWater moves from surface of Earth into ground
Glacial ice, Antarctica, Greenland correct answersWhat is the 2nd largest reservoir in the
hydrosphere, and where is it located?
Continental crust correct answersMostly granitic, thicker and less dense
Oceanic crust correct answersMostly basalt, is thinner and denser
Seafloor spreading correct answersMovement of the seafloor away from a mid-ocean ridge
Convection in the Earth's mantle correct answersWhat is the driving force behind continental
drift?
Alfred Wegener and Frank B. Taylor correct answersWho proposed the idea of continental drift?
Oceanic crust correct answersWhat type of lithosphere is created at a divergent plate boundary?
Pillow basalt correct answersLava that cools rapidly on the ocean floor
Black smoker correct answersSubstance that precipitates from hydrothermal vent waters;
accumulate as dark clouds and accumulate in the form of conical chimneys
Mid-Atlantic Ridge correct answersWhat is an example of a divergent plate boundary?
Age increases, depth increases, heat flow from mantle decreases correct answersWhat happens to
the age of the ocean floor, the depth, and the heat flow from the mantle as you move away from a
mid-ocean ridge?
Almost ten times faster correct answersHow fast is the spreading rate of the East Pacific Rise
compared to the Mid-Atlantic Ridge?
Melting of subducting plates correct answersHow does an island arc form?
Where two colliding plates meet correct answersWhere does an oceanic trench develop?
Aleutian Islands, Japan correct answersWhat are two examples of oceanic-oceanic convergent
plate boundaries?
, Iron and magnesium correct answersWhat two metals increase the density of the oceanic plate?
Volcanic activity and subduction correct answersHow does a continental arc form?
Andes Mountains, Cascades correct answersWhat are two examples of an oceanic-continental
convergent plate boundary?
Himalayas correct answersWhat is an example of a continental-continental convergent plate
boundary?
San Andreas Fault correct answersWhat is an example of a transform plate boundary?
All of them correct answersWhich types of plate boundaries are associated with earthquakes?
Transform plate boundary, continental-continental convergent plate boundary correct
answersWhat type of plate boundaries are not associated with volcanoes?
86% correct answersIn any sample of seawater, from anywhere in the world, what % of the salt
accounts for sodium chloride?
Quartz correct answersWhat is the principle component of most beach sand?
Diatoms and radiolarians correct answersWhich organisms are silica-based?
Coccolithophores and foraminifera correct answersWhich organisms are calcium carbonate-
based?
Equatorial latitudes correct answersWhere do radiolarian-rich deposits form?
Hydrogenous sediment correct answersSediment precipitated from seawater
Manganese nodules correct answersBlack nodules containing manganese, copper, iron, cobalt,
and nickel
Arctic correct answersWhere in the ocean would you not find manganese nodules?
Oolith correct answersTiny sphere of calcite that precipitates out of seawater
0.5 to 1.0 mm correct answersHow big are ooliths?
Tektite correct answersFormed from a rock that was hit by a meteorite, then melted, then cooled
back into the rock
Neritic correct answersIn the continental margin
Calcareous ooze correct answers30% calcareous organisms
71% correct answersWhat percent of the Earth's surface is covered by oceans?
78% nitrogen, 21% oxygen correct answersWhat are the two most abundant gases in the
atmosphere? What is the percentage of each by volume?
Infiltration correct answersWater moves from surface of Earth into ground
Glacial ice, Antarctica, Greenland correct answersWhat is the 2nd largest reservoir in the
hydrosphere, and where is it located?
Continental crust correct answersMostly granitic, thicker and less dense
Oceanic crust correct answersMostly basalt, is thinner and denser
Seafloor spreading correct answersMovement of the seafloor away from a mid-ocean ridge
Convection in the Earth's mantle correct answersWhat is the driving force behind continental
drift?
Alfred Wegener and Frank B. Taylor correct answersWho proposed the idea of continental drift?
Oceanic crust correct answersWhat type of lithosphere is created at a divergent plate boundary?
Pillow basalt correct answersLava that cools rapidly on the ocean floor
Black smoker correct answersSubstance that precipitates from hydrothermal vent waters;
accumulate as dark clouds and accumulate in the form of conical chimneys
Mid-Atlantic Ridge correct answersWhat is an example of a divergent plate boundary?
Age increases, depth increases, heat flow from mantle decreases correct answersWhat happens to
the age of the ocean floor, the depth, and the heat flow from the mantle as you move away from a
mid-ocean ridge?
Almost ten times faster correct answersHow fast is the spreading rate of the East Pacific Rise
compared to the Mid-Atlantic Ridge?
Melting of subducting plates correct answersHow does an island arc form?
Where two colliding plates meet correct answersWhere does an oceanic trench develop?
Aleutian Islands, Japan correct answersWhat are two examples of oceanic-oceanic convergent
plate boundaries?
, Iron and magnesium correct answersWhat two metals increase the density of the oceanic plate?
Volcanic activity and subduction correct answersHow does a continental arc form?
Andes Mountains, Cascades correct answersWhat are two examples of an oceanic-continental
convergent plate boundary?
Himalayas correct answersWhat is an example of a continental-continental convergent plate
boundary?
San Andreas Fault correct answersWhat is an example of a transform plate boundary?
All of them correct answersWhich types of plate boundaries are associated with earthquakes?
Transform plate boundary, continental-continental convergent plate boundary correct
answersWhat type of plate boundaries are not associated with volcanoes?
86% correct answersIn any sample of seawater, from anywhere in the world, what % of the salt
accounts for sodium chloride?
Quartz correct answersWhat is the principle component of most beach sand?
Diatoms and radiolarians correct answersWhich organisms are silica-based?
Coccolithophores and foraminifera correct answersWhich organisms are calcium carbonate-
based?
Equatorial latitudes correct answersWhere do radiolarian-rich deposits form?
Hydrogenous sediment correct answersSediment precipitated from seawater
Manganese nodules correct answersBlack nodules containing manganese, copper, iron, cobalt,
and nickel
Arctic correct answersWhere in the ocean would you not find manganese nodules?
Oolith correct answersTiny sphere of calcite that precipitates out of seawater
0.5 to 1.0 mm correct answersHow big are ooliths?
Tektite correct answersFormed from a rock that was hit by a meteorite, then melted, then cooled
back into the rock
Neritic correct answersIn the continental margin
Calcareous ooze correct answers30% calcareous organisms
