Question 1

_________first related the symmetrical magnetic patterns in seafloor basalts to seafloor spreading at a mid- ocean ridge.

Accepted Answer

A)  Wegener, Holmes, and Wilson 
B)  Rodgers, Gershwin, and Hammerstein 
C)  Morley, Vine, and Matthews 
D)  Evans, Smith, and Novak 
A)  Wegener, Holmes, and Wilson 
B)  Rodgers, Gershwin, and Hammerstein 
C)  Morley, Vine, and Matthews 
D)  Evans, Smith, and Novak

Question 2

___________plate boundaries are characterized by arcs of explosive composite cones and deep- ocean trenches.

Accepted Answer

A)  Convergent 
B)  Strike- slip 
C)  Divergent 
D)  Transform 
A)  Convergent 
B)  Strike- slip 
C)  Divergent 
D)  Transform

Question 3

What does the plate reconstruction, with the Atlantic Ocean closed up, do to the apparent polar wandering paths for Eurasia and North America, and what can we infer from this?

Accepted Answer

A)  It really indicates that, because opposite polarities attract, the curves became stuck together. 
B)  It makes them overlap but they are still strangely curved, implying the poles have still shifted so continental drift doesn't solve anything. 
C)  It indicates that the poles drift counterclockwise with time, implying Earth used to revolve the other way. 
D)  It makes them coincide, demonstrating that the opening of the Atlantic was the cause for the divergence seen today. 
A)  It really indicates that, because opposite polarities attract, the curves became stuck together. 
B)  It makes them overlap but they are still strangely curved, implying the poles have still shifted so continental drift doesn't solve anything. 
C)  It indicates that the poles drift counterclockwise with time, implying Earth used to revolve the other way. 
D)  It makes them coincide, demonstrating that the opening of the Atlantic was the cause for the divergence seen today.

Question 4

Deep-oceanic trenches are most abundant around the rim of the_________ ocean basin.

Accepted Answer

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

Question 5

The______ were formed in the late Paleozoic when sediments in a marine basin were squeezed and crumpled between converging continents.

Accepted Answer

A)  Urals in Russia 
B)  northern Rockies in Canada and the United States 
C)  Andes in South America 
D)  Alps in Europe 
A)  Urals in Russia 
B)  northern Rockies in Canada and the United States 
C)  Andes in South America 
D)  Alps in Europe

Question 6

Wegener's supercontinent that began to break up about 200 million years ago was named________ .

Accepted Answer

A)  Rodinia 
B)  Pangaea 
C)  Gondwanaland 
D)  Laurasia 
A)  Rodinia 
B)  Pangaea 
C)  Gondwanaland 
D)  Laurasia

Question 7

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

Accepted Answer

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

Question 8

The _______is an example of an active, continent- continent collision.

Accepted Answer

A)  northern movement of Queen Charlotte Islands toward the Aleutian Trench 
B)  Arabian Peninsula slamming into North Africa under the Red Sea 
C)  westward movement of the South American plate over the Nazca plate 
D)  northward movement of India under Eurasia 
A)  northern movement of Queen Charlotte Islands toward the Aleutian Trench 
B)  Arabian Peninsula slamming into North Africa under the Red Sea 
C)  westward movement of the South American plate over the Nazca plate 
D)  northward movement of India under Eurasia

Question 9

What is the most likely explanation for why there are no islands, only deep seamounts and guyots NW of Kauai towards Midway?

Accepted Answer

A)  The Pacific plate moved much faster during the period in question and there wasn't time to build tall volcanoes over the Hawaiian hot spot. 
B)  The seafloor farther from the current hot spot has aged and cooled off, so the volcanoes eroded and sank below sea level. 
C)  The hot spot was less vigorous from 27 to 65 m.y. than subsequently. 
D)  The intervening seafloor is thinner so it sat higher and eroded off all the volcanoes. 
A)  The Pacific plate moved much faster during the period in question and there wasn't time to build tall volcanoes over the Hawaiian hot spot. 
B)  The seafloor farther from the current hot spot has aged and cooled off, so the volcanoes eroded and sank below sea level. 
C)  The hot spot was less vigorous from 27 to 65 m.y. than subsequently. 
D)  The intervening seafloor is thinner so it sat higher and eroded off all the volcanoes.

Question 10

Pull- apart, rift zones are generally associated with a ________plate boundary.

Accepted Answer

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

Question 11

If the North Atlantic began to rift about 200 m.y. ago, initiating the break up of Pangaea, where are the Jurassic basalts from that initial rifting?

Accepted Answer

A)  on the Mid- Atlantic Ridge under Iceland 
B)  as outcrops and as basement to the continental shelves' sediment sequences along the eastern seaboard of North America and along the western coast of north Africa 
C)  subducted beneath the Bermuda triangle 
D)  There aren't any left; they all got recycled back into the mantle along subduction zones underneath western Europe and Brazil. 
A)  on the Mid- Atlantic Ridge under Iceland 
B)  as outcrops and as basement to the continental shelves' sediment sequences along the eastern seaboard of North America and along the western coast of north Africa 
C)  subducted beneath the Bermuda triangle 
D)  There aren't any left; they all got recycled back into the mantle along subduction zones underneath western Europe and Brazil.

Question 12

____________was never proposed as evidence supporting the existence of Pangaea.

Accepted Answer

A)  Late Paleozoic glacial features 
B)  The Glossopteris flora 
C)  Geometric fit between South America and Africa 
D)  Islands of Proterozoic rocks along the Mid- Atlantic Ridge 
A)  Late Paleozoic glacial features 
B)  The Glossopteris flora 
C)  Geometric fit between South America and Africa 
D)  Islands of Proterozoic rocks along the Mid- Atlantic Ridge

Question 13

What is the ultimate source for the plate tectonic motions?

Accepted Answer

convection and uneve

Question 14

A curved line of volcanic islands spaced about 80 km apart along the edge of one plate where two oceanic plates meet is called a(n)__________ .

Accepted Answer

A)  oceanic volcanic rift zone 
B)  volcanic island arc 
C)  subsided and failed continental rift 
D)  hot spot track 
A)  oceanic volcanic rift zone 
B)  volcanic island arc 
C)  subsided and failed continental rift 
D)  hot spot track

Question 15

The west coast of South America is associated with a _________plate boundary.

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

The former, late Paleozoic super continent is known as__________ .

Accepted Answer

A)  Pangaea 
B)  Pandemonia 
C)  Panatopia 
D)  Pancakea 
A)  Pangaea 
B)  Pandemonia 
C)  Panatopia 
D)  Pancakea

Question 18

The chaotic accumulation of deformed oceanic sediments, and scraps of ocean crust found plastered onto a convergent continental margins, like that where the Cocos plate subducts beneath western Mexico, is called_________ .

Accepted Answer

A)  a wedgie 
B)  an accretionary wedge 
C)  the scrapie 
D)  a continental margin arc 
A)  a wedgie 
B)  an accretionary wedge 
C)  the scrapie 
D)  a continental margin arc

Question 19

_________plate boundaries have the largest magnitude earthquakes.

Accepted Answer

A)  Transform and convergent 
B)  Divergent and transform 
C)  Divergent and convergent 
D)  All plate boundaries have large magnitude earthquakes. 
A)  Transform and convergent 
B)  Divergent and transform 
C)  Divergent and convergent 
D)  All plate boundaries have large magnitude earthquakes.

Question 20

Mount St. Helens and the other Cascade volcanoes from Mt. Shasta in northern California to Mt. Garibaldi in southwestern B.C. are__________ .

Accepted Answer

A)  a row of young, active, shield volcanoes built as western North America moved over a hot spot deep in the mantle 
B)  young, active composite cones built on a continental margin above a sinking slab of oceanic lithosphere 
C)  old, deeply eroded composite cones built before the Pacific Ocean existed 
D)  old, deeply eroded, basaltic shield volcanoes built when western North America was over the present- day site of the Hawaiian hot spot 
A)  a row of young, active, shield volcanoes built as western North America moved over a hot spot deep in the mantle 
B)  young, active composite cones built on a continental margin above a sinking slab of oceanic lithosphere 
C)  old, deeply eroded composite cones built before the Pacific Ocean existed 
D)  old, deeply eroded, basaltic shield volcanoes built when western North America was over the present- day site of the Hawaiian hot spot

_________first related the symmetrical magnetic patterns in seafloor basalts to seafloor spreading at a mid- ocean ridge.

___________plate boundaries are characterized by arcs of explosive composite cones and deep- ocean trenches.

What does the plate reconstruction, with the Atlantic Ocean closed up, do to the apparent polar wandering paths for Eurasia and North America, and what can we infer from this?

Deep-oceanic trenches are most abundant around the rim of the_________ ocean basin.

The______ were formed in the late Paleozoic when sediments in a marine basin were squeezed and crumpled between converging continents.

Wegener's supercontinent that began to break up about 200 million years ago was named________ .

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

The _______is an example of an active, continent- continent collision.

What is the most likely explanation for why there are no islands, only deep seamounts and guyots NW of Kauai towards Midway?

Pull- apart, rift zones are generally associated with a ________plate boundary.

If the North Atlantic began to rift about 200 m.y. ago, initiating the break up of Pangaea, where are the Jurassic basalts from that initial rifting?

____________was never proposed as evidence supporting the existence of Pangaea.

What is the ultimate source for the plate tectonic motions?

A curved line of volcanic islands spaced about 80 km apart along the edge of one plate where two oceanic plates meet is called a(n)__________ .

The west coast of South America is associated with a _________plate boundary.

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

The former, late Paleozoic super continent is known as__________ .

The chaotic accumulation of deformed oceanic sediments, and scraps of ocean crust found plastered onto a convergent continental margins, like that where the Cocos plate subducts beneath western Mexico, is called_________ .

_________plate boundaries have the largest magnitude earthquakes.

Mount St. Helens and the other Cascade volcanoes from Mt. Shasta in northern California to Mt. Garibaldi in southwestern B.C. are__________ .

An Introduction to Geology and Plate Tectonics

Minerals: the Building Blocks of 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 3: Igneous Rocks

_________first related the symmetrical magnetic patterns in seafloor basalts to seafloor spreading at a mid- ocean ridge.

___________plate boundaries are characterized by arcs of explosive composite cones and deep- ocean trenches.

What does the plate reconstruction, with the Atlantic Ocean closed up, do to the apparent polar wandering paths for Eurasia and North America, and what can we infer from this?

Deep-oceanic trenches are most abundant around the rim of the_________ ocean basin.

The______ were formed in the late Paleozoic when sediments in a marine basin were squeezed and crumpled between converging continents.

Wegener's supercontinent that began to break up about 200 million years ago was named________ .

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

The _______is an example of an active, continent- continent collision.

What is the most likely explanation for why there are no islands, only deep seamounts and guyots NW of Kauai towards Midway?

Pull- apart, rift zones are generally associated with a ________plate boundary.

If the North Atlantic began to rift about 200 m.y. ago, initiating the break up of Pangaea, where are the Jurassic basalts from that initial rifting?

____________was never proposed as evidence supporting the existence of Pangaea.

What is the ultimate source for the plate tectonic motions?

A curved line of volcanic islands spaced about 80 km apart along the edge of one plate where two oceanic plates meet is called a(n)__________ .

The west coast of South America is associated with a _________plate boundary.

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

The former, late Paleozoic super continent is known as__________ .

The chaotic accumulation of deformed oceanic sediments, and scraps of ocean crust found plastered onto a convergent continental margins, like that where the Cocos plate subducts beneath western Mexico, is called_________ .

_________plate boundaries have the largest magnitude earthquakes.

Mount St. Helens and the other Cascade volcanoes from Mt. Shasta in northern California to Mt. Garibaldi in southwestern B.C. are__________ .

An Introduction to Geology and Plate Tectonics

Minerals: the Building Blocks of 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