Question 1

In plate collisions the colder, denser, oceanic plate subducts and the volcanic arc forms on the more buoyant overriding plate.

Accepted Answer

A) True 
 B)False

Question 2

What is the inclination of the earth's magnetic field near the north pole?

Accepted Answer

very steep

Question 3

Match the plate boundary with the appropriate phrase.
-________ plates are sliding past one another horizontally

Accepted Answer

A) convergent 
B) transform 
C) divergen 
A) convergent 
B) transform 
C) divergen

Question 4

This plate boundary has the least amount of volcanism.

Accepted Answer

A) transform 
B) convergent 
C) divergent 
D) subduction 
A) transform 
B) convergent 
C) divergent 
D) subduction

Question 5

A typical rate of seafloor spreading in the Atlantic Ocean is ________.

Accepted Answer

A) 2 kilometres per year 
B) 2 metres per year 
C) 20 metres per year 
D) 2 centimetres per year 
A) 2 kilometres per year 
B) 2 metres per year 
C) 20 metres per year 
D) 2 centimetres per year

Question 6

All of the following are evidence supporting the theory of plate tectonics except for ________.

Accepted Answer

A) changes in the Moon's orbit due to shifting plates 
B) ocean floor drilling 
C) hot spots 
D) measurements of plate motions 
A) changes in the Moon's orbit due to shifting plates 
B) ocean floor drilling 
C) hot spots 
D) measurements of plate motions

Question 7

New oceanic crust and lithosphere are formed at ________.

Accepted Answer

A) divergent boundaries by submarine eruptions and intrusions of felsic magma 
B) convergent boundaries by submarine eruptions and intrusions of felsic magma 
C) divergent boundaries by submarine eruptions and intrusions of mafic magma 
D) convergent boundaries by submarine eruptions and intrusions of mafic magma 
A) divergent boundaries by submarine eruptions and intrusions of felsic magma 
B) convergent boundaries by submarine eruptions and intrusions of felsic magma 
C) divergent boundaries by submarine eruptions and intrusions of mafic magma 
D) convergent boundaries by submarine eruptions and intrusions of mafic magma

Question 8

The Wilson-cycle explains the long term opening and closing of ocean basins.

Accepted Answer

A) True 
 B)False

Question 9

Deep-hypocentre earthquakes are associated with ________ plate boundaries.

Accepted Answer

A) divergent 
B) convergent (subducting) 
C) transform 
D) strike-slip 
A) divergent 
B) convergent (subducting) 
C) transform 
D) strike-slip

Question 10

What do the data points signify on the apparent polar wandering curves for Eurasia and North America?

Accepted Answer

A) the apparent positions for the north magnetic pole at various times in the past, from paleomagnetic measurements on different rock sequences in Eurasia and North America 
B) where the north magnetic pole appears to be located as viewed from various locations on different continents of the northern hemisphere today 
C) where the north magnetic pole will be at various times in the future if North America keeps moving east and Eurasia keeps moving west 
D) laboratory locations where Eurasian and North America rock samples were taken to be tested 
A) the apparent positions for the north magnetic pole at various times in the past, from paleomagnetic measurements on different rock sequences in Eurasia and North America 
B) where the north magnetic pole appears to be located as viewed from various locations on different continents of the northern hemisphere today 
C) where the north magnetic pole will be at various times in the future if North America keeps moving east and Eurasia keeps moving west 
D) laboratory locations where Eurasian and North America rock samples were taken to be tested

Question 11

The "big bend" in the Hawaii-Emperor seamount chain occurred at about 45 million years ago.What is the most likely explanation for this change in the orientation of the hot spot track across the Pacific plate?

Accepted Answer

A) From Cretaceous through 45 million years (Eocene), the Pacific seafloor used to move northwards as it subducted down a trench near the present Aleutians.Since then the Kurile-Kamchatka trench began subducting and the Pacific plate began moving NW instead. 
B) The hot spot abruptly changed its direction.It used to move straight south, and since 45 million years ago it has been moving SE through the upper mantle. 
C) They are two unrelated hot spot tracks that intersect.Originally there was an Emperor hot spot, then it died while the Hawaiian hot spot started up and moved in a new direction. 
D) The Devil put this line of volcanoes here to confuse us and subvert us from the true path.Everyone knows Earth isn't really that old. 
A) From Cretaceous through 45 million years (Eocene), the Pacific seafloor used to move northwards as it subducted down a trench near the present Aleutians.Since then the Kurile-Kamchatka trench began subducting and the Pacific plate began moving NW instead. 
B) The hot spot abruptly changed its direction.It used to move straight south, and since 45 million years ago it has been moving SE through the upper mantle. 
C) They are two unrelated hot spot tracks that intersect.Originally there was an Emperor hot spot, then it died while the Hawaiian hot spot started up and moved in a new direction. 
D) The Devil put this line of volcanoes here to confuse us and subvert us from the true path.Everyone knows Earth isn't really that old.

Question 12

Name two contributions that J.Tuzo Wilson made to plate tectonic theory.

Accepted Answer

hot spots, oceanic t

Question 13

Name two mountain belts which formed by continent-continent collisions?

Accepted Answer

Alps, Appa

Question 14

How does the polar wander curve for Eurasia confirm Wegener's hypothesis that the Carboniferous (300 million years ago)coal beds were originally deposited when that land mass was near the equator?

Accepted Answer

A) To restore the 300 million year paleopole to today's north magnetic pole pushes Eurasia about 40 degrees of latitude farther south than it is today. 
B) To have that pole position, the 300 million year coal beds must have had a steep magnetic inclination. 
C) This means that Eurasia used to sit in the middle of the north Pacific Ocean 300 million year ago where the climate is warmer. 
D) 300 million years ago, the equator and magnetic poles had switched positions, so Eurasia was tropical then. 
A) To restore the 300 million year paleopole to today's north magnetic pole pushes Eurasia about 40 degrees of latitude farther south than it is today. 
B) To have that pole position, the 300 million year coal beds must have had a steep magnetic inclination. 
C) This means that Eurasia used to sit in the middle of the north Pacific Ocean 300 million year ago where the climate is warmer. 
D) 300 million years ago, the equator and magnetic poles had switched positions, so Eurasia was tropical then.

Question 15

Where do shallow focus earthquakes occur relative to the deep ocean trenches?

Accepted Answer

Within or

Question 16

The lithospheric plates in modern plate tectonic theory differ significantly from Wegener's continental drift hypothesis in that ________.

Accepted Answer

A) they are significantly thinner 
B) several of the largest plates include both continental and oceanic crust 
C) it is the oceans that do all of the moving, not the continents 
D) we now know that the plate motions are driven by massive magnetic reversals 
A) they are significantly thinner 
B) several of the largest plates include both continental and oceanic crust 
C) it is the oceans that do all of the moving, not the continents 
D) we now know that the plate motions are driven by massive magnetic reversals

Question 17

Deep ocean trenches are surficial evidence for ________.

Accepted Answer

A) rifting beneath a continental plate and the beginning of continental drift 
B) sinking of oceanic lithosphere into the mantle at subduction zones 
C) rising of hot asthenosphere from deep in the mantle 
D) transform faulting between an oceanic plate and a continental plate 
A) rifting beneath a continental plate and the beginning of continental drift 
B) sinking of oceanic lithosphere into the mantle at subduction zones 
C) rising of hot asthenosphere from deep in the mantle 
D) transform faulting between an oceanic plate and a continental plate

Question 18

In detail, there is no geologic evidence that mid-ocean ridges spread at uniform rates or even symmetrically.

Accepted Answer

A) True 
 B)False

Question 19

What did Hess see as the single cause for: the tensional features of the Mid Atlantic Ridge, its elevated position, its high heat flow, and active volcanism?

Accepted Answer

The ridge was a spre

Question 20

Anywhere in the world, ________ most effectively outline the edges of the lithospheric plates.

Accepted Answer

A) lines of active composite volcanoes 
B) margins of the continental shelves 
C) the locations of deep mantle hot spots 
D) lines of earthquake epicentres 
A) lines of active composite volcanoes 
B) margins of the continental shelves 
C) the locations of deep mantle hot spots 
D) lines of earthquake epicentres

In plate collisions the colder, denser, oceanic plate subducts and the volcanic arc forms on the more buoyant overriding plate.

What is the inclination of the earth's magnetic field near the north pole?

Match the plate boundary with the appropriate phrase. -________ plates are sliding past one another horizontally

This plate boundary has the least amount of volcanism.

A typical rate of seafloor spreading in the Atlantic Ocean is ________.

All of the following are evidence supporting the theory of plate tectonics except for ________.

New oceanic crust and lithosphere are formed at ________.

The Wilson-cycle explains the long term opening and closing of ocean basins.

Deep-hypocentre earthquakes are associated with ________ plate boundaries.

What do the data points signify on the apparent polar wandering curves for Eurasia and North America?

The "big bend" in the Hawaii-Emperor seamount chain occurred at about 45 million years ago.What is the most likely explanation for this change in the orientation of the hot spot track across the Pacific plate?

Name two contributions that J.Tuzo Wilson made to plate tectonic theory.

Name two mountain belts which formed by continent-continent collisions?

How does the polar wander curve for Eurasia confirm Wegener's hypothesis that the Carboniferous (300 million years ago)coal beds were originally deposited when that land mass was near the equator?

Where do shallow focus earthquakes occur relative to the deep ocean trenches?

The lithospheric plates in modern plate tectonic theory differ significantly from Wegener's continental drift hypothesis in that ________.

Deep ocean trenches are surficial evidence for ________.

In detail, there is no geologic evidence that mid-ocean ridges spread at uniform rates or even symmetrically.

What did Hess see as the single cause for: the tensional features of the Mid Atlantic Ridge, its elevated position, its high heat flow, and active volcanism?

Anywhere in the world, ________ most effectively outline the edges of the lithospheric plates.

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

The Ocean Floor

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 12: Plate Tectonics: The Framework for Modern Geology

In plate collisions the colder, denser, oceanic plate subducts and the volcanic arc forms on the more buoyant overriding plate.

What is the inclination of the earth's magnetic field near the north pole?

Match the plate boundary with the appropriate phrase. -________ plates are sliding past one another horizontally

This plate boundary has the least amount of volcanism.

A typical rate of seafloor spreading in the Atlantic Ocean is ________.

All of the following are evidence supporting the theory of plate tectonics except for ________.

New oceanic crust and lithosphere are formed at ________.

The Wilson-cycle explains the long term opening and closing of ocean basins.

Deep-hypocentre earthquakes are associated with ________ plate boundaries.

What do the data points signify on the apparent polar wandering curves for Eurasia and North America?

The "big bend" in the Hawaii-Emperor seamount chain occurred at about 45 million years ago.What is the most likely explanation for this change in the orientation of the hot spot track across the Pacific plate?

Name two contributions that J.Tuzo Wilson made to plate tectonic theory.

Name two mountain belts which formed by continent-continent collisions?

How does the polar wander curve for Eurasia confirm Wegener's hypothesis that the Carboniferous (300 million years ago)coal beds were originally deposited when that land mass was near the equator?

Where do shallow focus earthquakes occur relative to the deep ocean trenches?

The lithospheric plates in modern plate tectonic theory differ significantly from Wegener's continental drift hypothesis in that ________.

Deep ocean trenches are surficial evidence for ________.

In detail, there is no geologic evidence that mid-ocean ridges spread at uniform rates or even symmetrically.

What did Hess see as the single cause for: the tensional features of the Mid Atlantic Ridge, its elevated position, its high heat flow, and active volcanism?

Anywhere in the world, ________ most effectively outline the edges of the lithospheric plates.

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

The Ocean Floor

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