844031
Descripción
Test por saradiaz16, actualizado hace más de 1 año
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Creado por saradiaz16
hace alrededor de 10 años
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Pregunta 1
Pregunta
________ was an ancient reptile that lived in South America and Africa during the late Paleozoic.
Respuesta
-
Granopteris
-
Monastarious
-
Glossopteris
-
Mesosaurus
Pregunta 2
Pregunta
In the early part of the twentieth century, ________ argued forcefully for continental drift.
Respuesta
-
Karl Wagner
-
Peter Rommel
-
Alfred Wegener
-
Bill Kohl
Pregunta 3
Pregunta
The former late Paleozoic super continent is known as ________.
Respuesta
-
Pandomonia
-
Pancakea
-
Pangaea
-
Panatopia
Pregunta 4
Pregunta
Today, ________ is in about the same geographic position as during late Paleozoic time.
Respuesta
-
India
-
South America
-
Australia
-
Antarctica
Pregunta 5
Pregunta
Which of the following paleoclimatic evidence supports the idea of the late Paleozoic supercontinent in the Southern Hemisphere?
Respuesta
-
lithified loess (wind-blown) deposits in the deserts of Chile, Australia, and Africa
-
tillites (rocks formed by glaciers) in South Africa and South America
-
thick sediments in the Amazon and Congo deltas of South America and Africa
-
cold water fossils in the deep-water sediments of the South Atlantic abyssal plain
Pregunta 6
Pregunta
The ________ is an example of an active, continent-continent collision.
Respuesta
-
Arabian Peninsula slamming into North Africa under the Red Sea
-
westward movement of the South American plate over the Nazca plate
-
northern movement of Baja California and a sliver of western California toward the Hawaiian Islands
-
northward movement of India into Eurasia
Pregunta 7
Pregunta
Pull-apart rift zones are generally associated with a ________ plate boundary.
Respuesta
-
transform
-
divergent
-
convergent
-
all plate boundaries
Pregunta 8
Pregunta
The temperature below which magnetic material can retain a permanent magnetization is called the ________.
Respuesta
-
Darcy temperature
-
Vine temperature
-
Bullard point
-
Curie point
Pregunta 9
Pregunta
A very long-lived magma source located deep in the mantle is called a ________.
Respuesta
-
magma welt
-
basalt spout
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melt well
-
hot spot
Pregunta 10
Pregunta
Linear, magnetic patterns associated with mid-ocean ridges are configured as ________.
Respuesta
-
concentric circles about a rising plume of hot mantle rocks and magma
-
reversed magnetizations along the rift valleys and normal magnetizations along the ridge
-
normal and reversed magnetized strips roughly parallel to the ridge
-
normal and reversed magnetized strips roughly perpendicular to the ridge axis
Pregunta 11
Pregunta
The ________ is (are) a logical evolutionary analog of the African Rift Valleys ten million years from now.
Respuesta
-
Ural Mountains
-
San Andreas fault
-
Peru-Chile trench
-
Red Sea
Pregunta 12
Pregunta
A typical rate of seafloor spreading in the Atlantic Ocean is ________.
Respuesta
-
2 feet per year
-
0.1 inches per year
-
20 feet per year
-
2 centimeters per year
Pregunta 13
Pregunta
Which of the following energy sources is thought to drive the lateral motions of Earth's lithospheric plates?
Respuesta
-
gravitational attractive forces of the Sun and Moon
-
electrical and magnetic fields localized in the inner core
-
export of heat from deep in the mantle to the top of the asthenosphere
-
swirling movements of the molten iron particles in the outer core
Pregunta 14
Pregunta
The continental drift hypothesis was rejected primarily because Alfred Wegener could not ________.
Respuesta
-
find geologic similarities on different continents
-
disprove competing theories that were more accepted by scientists
-
identify a mechanism capable of moving continents
-
all of the above
Pregunta 15
Pregunta
All of the following are evidence supporting the theory of plate tectonics except for ________.
Respuesta
-
changes in the Moon's orbit due to shifting plates
-
ocean floor drilling
-
hot spots
-
paleomagnetism
Pregunta 16
Pregunta
________ was never proposed as evidence supporting the existence of Pangaea.
Respuesta
-
Geometrical fit between South America and Africa
-
Islands of Precambrian rocks along the Mid-Atlantic Ridge
-
Late Paleozoic glacial features
-
Similar fossils on different continents
Pregunta 17
Pregunta
Which one of the following most accurately describes the volcanoes of the Hawaiian Islands?
Respuesta
-
stratovolcanoes associated with subduction and a convergent plate boundary
-
shield volcanoes fed by a long-lived hot spot below the Pacific lithospheric plate
-
shield volcanoes associated with a mid-Pacific ridge and spreading center
-
stratovolcanoes associated with a mid-Pacific transform fault
Pregunta 18
Pregunta
Which of the following statements apply to the asthenosphere, but not the lithosphere?
Respuesta
-
zone in the upper mantle that deforms by plastic flowage
-
cool, rigid layer of crust and upper mantle that forms the tectonic plates
-
deforms mainly by brittle fracturing and faulting
-
partial melting of rising granitic plumes produces huge volumes of basaltic magma
Pregunta 19
Pregunta
Which of the following statements apply to the asthenosphere, but not the lithosphere?
Respuesta
-
zone in the upper mantle that deforms by plastic flowage
-
cool, rigid layer of crust and upper mantle that forms the tectonic plates
-
deforms mainly by brittle fracturing and faulting
-
partial melting of rising granitic plumes produces huge volumes of basaltic magma
Pregunta 20
Pregunta
New oceanic crust and lithosphere are formed at ________.
Respuesta
-
divergent boundaries by submarine eruptions and intrusions of rhyolitic magma
-
convergent boundaries by submarine eruptions and intrusions of rhyolitic magma
-
divergent boundaries by submarine eruptions and intrusions of basaltic magma
-
convergent boundaries by submarine eruptions and intrusions of basaltic magma
Pregunta 21
Pregunta
Cooler, older, oceanic lithosphere sinks into the mantle at ________.
Respuesta
-
subduction zones along convergent plate boundaries
-
transform fault zones along divergent plate boundaries
-
rift zones along mid-ocean ridges
-
sites of long-lived, hot spot volcanism in the ocean basins
Pregunta 22
Pregunta
Deep ocean trenches are surficial evidence for ________.
Respuesta
-
rifting beneath a continental plate and the beginning of continental drift
-
sinking of oceanic lithosphere into the mantle at a subduction zone
-
rising of hot asthenosphere from deep in the mantle
-
transform faulting between an oceanic plate and a continental plate
Pregunta 23
Pregunta
A transform plate boundary is characterized by ________.
Respuesta
-
stratovolcanoes on the edge of a plate and shield volcanoes on the adjacent plate
-
two converging oceanic plates meeting head-on and piling up into a mid-ocean ridge
-
a divergent boundary where the continental plate changes to an oceanic plate
-
a deep, vertical fault along which two plates slide past one another in opposite directions
Pregunta 24
Pregunta
Which one of the following is an important fundamental assumption underlying the plate tectonic theory?
Respuesta
-
Earth's magnetic field originates in the outer core.
-
Earth's diameter has been essentially constant over time
-
Radioactive decay slows down at the extreme pressures of the inner core.
-
Earth's ocean basins are very old and stable features
Pregunta 25
Pregunta
The modern-day Red Sea is explained by plate tectonics theory because it is ________.
Respuesta
-
a tiny remnant of a once immense ocean that was closed as Africa moved toward Asia
-
the site of a transform fault along which Arabia is moving away from Africa
-
a rift zone that may eventually open into a major ocean if Arabia and Africa continue to separate
-
a rare example of a two-continent subduction zone where the African continental plate is sinking under the Arabian continental plate
Pregunta 26
Pregunta
Mount St. Helens and the other Cascade volcanoes are ________.
Respuesta
-
young, active stratovolcanoes built on a continental margin above a sinking slab of oceanic lithosphere
-
a row of young, active, shield volcanoes built as western North America moved over a hot spot deep in the mantle
-
old, deeply eroded stratovolcanoes built before the Pacific Ocean existed
-
old, deeply eroded, basaltic shield volcanoes built when western North America was over the present-day site of the Hawaiian hot spot
Pregunta 27
Pregunta
The volcanoes and deep valleys of east Africa are related to a ________.
Respuesta
-
continental rift along which parts of the African continent are beginning to slowly separate
-
fault allowing Arabia to slip westward past east Africa and penetrate into Turkey
-
transform fault aligned with the Red Sea carrying the Arabian and African blocks in opposite directions
-
continental collision zone between Africa and the Zagros Mountains along the southern margin of Eurasia
Pregunta 28
Pregunta
The Aleutian Islands occur at a ________.
Respuesta
-
convergent boundary on a volcanic arc above a northward-subducting Pacific plate
-
transform boundary where North America has moved towards Alaska
-
divergent boundary where shield volcanoes are forming
-
convergent, continental margin with uplifted fault blocks, much like those of the Basin and Range Province
Pregunta 29
Pregunta
________ most effectively outline the edges of the lithospheric plates.
Respuesta
-
Lines of active stratovolcanoes
-
Margins of the continental shelves
-
The locations of deep mantle hot spots
-
Lines of earthquake epicenters
Pregunta 30
Pregunta
Deep-oceanic trenches are most abundant around the rim of the ________ ocean basin.
Respuesta
-
Atlantic
-
Indian
-
Arctic
-
Pacific
Pregunta 31
Pregunta
Where would you drill to recover samples of the oldest basalts of the oceanic crust, which are Jurassic in age?
Respuesta
-
crest of the East Pacific, mid-ocean ridge
-
oceanic side of the Aleutian trench
-
just offshore from the Hawaiian Islands
-
Mid-Atlantic Ridge under Iceland
Pregunta 32
Pregunta
________ first related the symmetrical magnetic patterns in seafloor basalts to seafloor spreading at a mid-ocean ridge.
Respuesta
-
Evans and Novak
-
Vine and Matthews
-
Matthews and Marks
-
Wegener and Wilson
Pregunta 33
Pregunta
Early results of the Deep Sea Drilling Project clearly justified the conclusion that ________.
Respuesta
-
the oceans have not always contained most of Earth's water
-
the ocean basins are relatively young; most ocean basin rocks and sediments are Cretaceous or younger in age
-
Proterozoic rocks are found only as seamounts in the deepest parts of the ocean basins
-
the youngest sediments were deposited directly on the oldest seafloor basalts
Pregunta 34
Pregunta
Choose the option which does not fit the pattern.
Respuesta
-
fossil evidence
-
fit of the continents
-
paleomagnetism
-
paleoclimates
Pregunta 35
Pregunta
Choose the option which does not fit the pattern.
Respuesta
-
Curie point
-
paleomagnetism
-
magnetic poles
-
polar
Pregunta 36
Pregunta
Choose the option which does not fit the pattern.
Respuesta
-
oceanic ridge
-
seafloor spreading
-
arc volcanoes
-
divergent
Pregunta 37
Pregunta
Choose the option which does not fit the pattern.
Respuesta
-
Hawaii
-
island arc
-
volcanic arc
-
subduction
Pregunta 38
Pregunta
Choose the option which does not fit the pattern.
Respuesta
-
Hawaii
-
island arc
-
volcanic arc
-
subduction
Pregunta 39
Pregunta
Choose the option which does not fit the pattern
Respuesta
-
slab pull
-
mantle drag
-
ridge push
-
slab suction
Pregunta 40
Pregunta
The oldest rocks on the seafloor are much younger than the oldest rocks on the continents.
Respuesta
- True
- False
Pregunta 41
Pregunta
Earth's radius and surface area are slowly increasing to accommodate the new oceanic crust being formed at mid-ocean ridges.
Respuesta
- True
- False
Pregunta 42
Pregunta
Hawaii is the oldest island of the Hawaiian Island chain.
Respuesta
- True
- False
Pregunta 43
Pregunta
The oldest rocks of the oceanic crust are found in deep ocean trenches far away from active, mid-ocean ridges
Respuesta
- True
- False
Pregunta 44
Pregunta
As the South Atlantic basin widens by seafloor spreading, Africa and South America are moving closer together.
Respuesta
- True
- False
Pregunta 45
Pregunta
In general, rocks of the continental crust are less dense than rocks of the oceanic crust.
Respuesta
- True
- False
Pregunta 46
Pregunta
During various times in the geologic past, the polarity of Earth's magnetic field has been reversed.
Respuesta
- True
- False
Pregunta 47
Pregunta
The rate of seafloor spreading is, on the average, about one meter per year.
Respuesta
- True
- False
Pregunta 48
Pregunta
Wegener's continental drift hypothesis was weakened because a viable mechanism for moving the continents was lacking.
Respuesta
- True
- False
Pregunta 49
Pregunta
During the geologic past, the magnetic field poles have generally been very close to Earth's rotational poles.
Respuesta
- True
- False
Pregunta 50
Pregunta
Seafloor spreading rates can be estimated if the geologic ages of the magnetic field reversals are independently known.
Respuesta
- True
- False
Pregunta 51
Pregunta
The volcanoes of Hawaii are localized above a deep mantle hot spot; they are not part of the East Pacific oceanic ridge
Respuesta
- True
- False
Pregunta 52
Pregunta
Iceland is a good example of an island arc, formed from an oceanic-oceanic plate collision.
Respuesta
- True
- False
Pregunta 53
Pregunta
An extensive, late Paleozoic glaciation affected southern India, southern Africa and southeastern South America.
Respuesta
- True
- False
Pregunta 54
Pregunta
The Himalayan Mountains are the tectonic product of a collision between India and Eurasia that began in Eocene time and still continues.
Respuesta
- True
- False
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