OCE 1001 Chapter 2, Test 1
When did the Appalachian Mountains of North America begin to form? 300 million years ago 150 million years ago 600 million years ago 250 million years ago 450 million years ago
450 million years ago
When did the great mountain ranges of southern Europe and Asia begin to form? 300 million years ago 450 million years ago 600 million years ago 50 million years ago
50 million years ago
How are normal polarity and reverse polarity of Earth's magnetic field different? A compass points toward the North Pole during normal polarity and to the equator during reverse polarity. A compass points toward the North Pole during normal polarity and to the South Pole during reverse polarity. A compass points toward the South Pole during normal polarity and to the North Pole during reverse polarity. A compass points toward the South Pole during normal polarity and to the equator during reverse polarity.
A compass points toward the North Pole during normal polarity and to the South Pole during reverse polarity.
In general, what is our best evidence that the orientation of Earth's magnetic field has changed over time? A record of Earth's gravitational field is recorded in oceanic rocks, which show a clear pattern of changes in Earth's gravitational polarity. A record of Earth's magnetic field is recorded in continental rocks, which show a clear pattern of changes in Earth's magnetic polarity. A record of Earth's gravitational field is recorded in continental rocks, which show a clear pattern of changes in Earth's gravitational polarity. A record of Earth's magnetic field is recorded in oceanic rocks, which show a clear pattern of changes in Earth's magnetic polarity.
A record of Earth's magnetic field is recorded in oceanic rocks, which show a clear pattern of changes in Earth's magnetic polarity.
If the rate and direction of plate movement remain the same for the next 50 million years, an accurate prediction would then be: Rifting of the Eurasian plate to form a juvenile ocean Subsidence of the Himalayan Mountains Accretion of the California Terrane onto Alaska Suturing of the Atlantic Ocean Formation of a land bridge between Australia and Antarctica
Accretion of the California Terrane onto Alaska
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. Azores Aleutian Islands Canary Islands Iceland Galapagos Islands
Aleutian Islands
The first person to advance the idea of mobile continents or continental drift was: Drummond Matthews. Harry Hess. John Tuzo Wilson. Alfred Wegener. Frederick Vine.
Alfred Wegener.
What is the relationship between the mantle and the asthenosphere? All of the asthenosphere is contained within a larger layer called the mantle. All of the mantle is contained within a larger layer called the asthenosphere. The mantle lies below a smaller layer called the asthenosphere. The mantle lies on top of a smaller layer called the asthenosphere.
All of the asthenosphere is contained within a larger layer called the mantle.
What is the relationship between the crust and the lithosphere? All of the crust is contained within a larger layer called the lithosphere. Some of the crust is contained within a larger layer called the lithosphere. The crust lies below a larger layer called the lithosphere. The crust lies on top of a larger layer called the lithosphere.
All of the crust is contained within a larger layer called the lithosphere.
Why does the orange liquid rise when the lava lamp animation is plugged in? The orange liquid does not expand, whereas the other liquid does. The orange liquid expands, whereas the other liquid does not. Although both liquids expand when heated, the orange liquid expands less. Although both liquids expand when heated, the orange liquid expands more.
Although both liquids expand when heated, the orange liquid expands more.
Which of the following is an example of an oceanic-continental convergent plate boundary? Himalaya Mountains Andes Mountains San Andreas Fault Aleutian Islands Mendocino Fault
Andes Mountains
Which of the following rocks is the most reliable one used to collect information about Earth's magnetic field where and when the rock originated? Granite Schist Sandstone Limestone Basalt
Basalt
The first scientist to propose the origin of coral reefs based upon subsidence (sinking) of volcanic islands was: John Tuzo Wilson. Charles Darwin. Drummond Matthews. Alfred Wegener. Harry Hess.
Charles Darwin.
Which of the following is the main reason that Earth has a magnetic field? Select only one answer. The solid inner core spins rapidly in the opposite direction as Earth rotates. Convection in the liquid iron-nickel outer core generates a magnetic field. The Sun has such a powerful magnetic field that it creates a magnetic field on Earth. The solid iron-nickel inner core spins rapidly in the same direction as Earth, but much faster. Convection of the silicate materials in the asthenosphere generates a magnetic field.
Convection in the liquid iron-nickel outer core generates a magnetic field.
Iceland is located on what type of plate boundary? Continental/continental convergent Oceanic/oceanic convergent Divergent Transform Oceanic/continental
Divergent
Of the following statements about Earth's magnetic field, which is/are true? Choose all that apply. The lines of the magnetic force are parallel with Earth's surface at the equator. The lines of the magnetic force are perpendicular relative to Earth's surface at the magnetic north pole. The lines of the magnetic force are perpendicular relative to Earth's surface at the magnetic south pole. The magnetic north pole may reverse so that it is located near the geographic south pole. Magnetic north is at the same point on Earth as the geographic north pole.
EVERYTHING BUT Magnetic north is at the same point on Earth as the geographic north pole.
Which of the following lines of evidence did Alfred Wegener use to support the concept of drifting continents? Choose all that apply. the distribution of species of fossils the way the shapes of the continents fit together like pieces of a jigsaw puzzle the composition of meteors from outer space the pattern of similar mountain belts on different continents evidence of glaciers in areas that are now tropical
EVERYTHING BUT the composition of meteors from outer space
What would happen to Earth if ocean floor were created at divergent boundaries at a faster rate than it is destroyed at convergent boundaries? Earth would increase in volume. Earth would decrease in mass. Earth would increase in mass. Earth would decrease in volume.
Earth would increase in volume.
Which of the following statements about Earth's magnetic field is most accurate? Earth's magnetic field switches polarity at regular time intervals. Earth does not have a regular magnetic field. Earth's magnetic field does not switch polarity. Earth's magnetic field switches polarity at irregular time intervals.
Earth's magnetic field switches polarity at irregular time intervals.
Which of the following statements about earthquakes with magnitude greater than 4.0 is most accurate? Earthquakes with magnitude greater than 4.0 occur in a pattern than correlates closely with plate boundaries. Earthquakes with magnitude greater than 4.0 occur in a pattern than correlates loosely with hot spots. Earthquakes with magnitude greater than 4.0 occur in a pattern than correlates closely with hot spots. Earthquakes with magnitude greater than 4.0 occur in a pattern than correlates loosely with plate boundaries.
Earthquakes with magnitude greater than 4.0 occur in a pattern than correlates closely with plate boundaries.
Which of the following is an example of the embryonic stage of the Wilson Cycle? Mediterranean Sea Pacific Ocean Red Sea Atlantic Ocean East Africa
East Africa
Seafloor depth was first determined by what remote sensing technology? Radar Satellites Echo sounder Lidar Aerial photography
Echo sounder
The book The History of Ocean Basins, which contained the idea of seafloor spreading, was written by geologist: Drummond Matthews. Alfred Wegener. Harry Hess. John Tuzo Wilson. Frederick Vine.
Harry Hess.
Which of the following is an example of a nematath? Hawaiian Islands-Emperor Seamount Chain Great Barrier Reef Iceland Aleutian Islands Mariana Islands
Hawaiian Islands-Emperor Seamount Chain
Why are ocean basins continually being destroyed and created, rather than simply being redistributed around Earth's surface like continents? High-density continental crust subducts beneath low-density oceanic crust where plates converge. Low-density oceanic crust subducts beneath high-density continental crust where plates converge. High-density oceanic crust subducts beneath low-density continental crust where plates converge. Low-density continental crust is created where plates rift and diverge. Low-density continental crust subducts beneath high-density oceanic crust where plates converge.
High-density oceanic crust subducts beneath low-density continental crust where plates converge.
Consider the geologic fate of the following seamounts and islands in the Hawaiian Island-Emperor Seamount chain. Assuming conditions remain favorable for coral growth, which would most likely be the next to form an atoll? Maui Hawaii Kauai Oahu Loihi
Kauai
Which of the following fossils was used as data to help reconstruct Pangea because it was a reptile found in South America and Africa? Glossopteris Archaeopteris Mesosauras Lepidodendron
Mesosauras
Of the following statements about ocean crust, which is/are true? Choose all that apply. Ocean crust is destroyed at the mid-ocean ridge. Ocean crust is destroyed at deep sea trenches. Ocean crust is created at deep sea trenches. Ocean crust is created at the mid-ocean ridge. Ocean crust is destroyed at transform faults.
Ocean crust is created at the mid-ocean ridge. Ocean crust is destroyed at deep sea trenches.
Which of the following tectonic plates are oceanic? Pacific Plate Eurasian Plate Nazca Plate African Plate North American Plate
Pacific Plate. Nazca Plate
Which of the following was not used as evidence for continental drift? The distribution of organisms Matching sequences of rocks Past glacial activity Paleomagnetic reversals The fit of the continents
Paleomagnetic reversals
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. Panamerica Pangaea Tethys Sea Gondwanaland Panthalassia
Panamerica
Wegener used which of the following to provide evidence for continental drift? Earthquake distribution Locations of active volcanoes Shape of continental margins Magnetic pole reversals Seafloor magnetic patterns
Shape of continental margins
What is the relationship between the mantle and the lithosphere? Some of the mantle is contained within a smaller layer called the lithosphere. The mantle lies on top of a smaller layer called the lithosphere. All of the mantle is contained within a smaller layer called the lithosphere. The mantle lies below a smaller layer called the lithosphere.
Some of the mantle is contained within a smaller layer called the lithosphere.
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern (2) Stanley Miller Harry Hess Drummond Matthews Alfred Wegener Frederick Vine
Stanley Miller
Which of the following statements is true regarding tectonic plates? Tectonic plate are composed of the crust and aesthenosphere. All tectonic plates are about the same size and shape. Tectonic plates may include both oceanic and continental crust. All plate boundaries trace the edges of the continents. All of these statements are correct.
Tectonic plates may include both oceanic and continental crust.
What would happen in the lava lamp if the orange liquid were denser at warmer temperatures than the blue/clear liquid shown in the animation? Both the orange and the blue/clear liquids would rise toward the top when the lamp was turned on. The orange liquid would rise toward the top when the lamp was turned on, whereas the blue/clear liquid would sink. The blue/clear liquid would rise toward the top when the lamp was turned on, whereas the orange liquid would sink. Both the orange and the blue/clear liquids would stay near the bottom when the lamp was turned on.
The blue/clear liquid would rise toward the top when the lamp was turned on, whereas the orange liquid would sink.
What is the relationship between the crust and the lithosphere? The lithosphere is part of the crust. The lithosphere is a special type of crust. The crust is a special type of lithosphere. The crust is part of the lithosphere.
The crust is part of the lithosphere.
Why does the sea floor have a striped pattern of magnetic anomalies that is symmetric with respect to the mid-ocean ridge? Choose all that apply. The igneous rock of the ocean floor preserves Earth's existing magnetic field as the rock cools. Polar reversals cause existing ocean crust to remagnetize. The ocean floor is spreading apart and new sea floor is forming. The polarity of Earth's magnetic field experiences reversals. Marine organisms that live on the sea floor have caused this pattern.
The igneous rock of the ocean floor preserves Earth's existing magnetic field as the rock cools. The ocean floor is spreading apart and new sea floor is forming. The polarity of Earth's magnetic field experiences reversals.
What prompted the first widespread mapping of the ocean floor? Conflicts over maritime (ocean) territorial claims during the 1970s The creation of NASA The sinking of the Titanic The laying of undersea telegraph lines between the United States and Europe The importance of submarine warfare during World War II
The importance of submarine warfare during World War II
Which properties of a lava lamp are important to remember when modeling convection? The lava lamp contains three liquids with different densities that do not mix and that expand at different rates when heated. The lava lamp contains three liquids with similar densities that do not mix and that expand at similar rates when heated. The lava lamp contains two liquids with similar densities that do not mix and that expand at similar rates when heated. The lava lamp contains two liquids with different densities that do not mix and that expand at different rates when heated.
The lava lamp contains two liquids with different densities that do not mix and that expand at different rates when heated.
Which of the following statements is true of the lithosphere? The lithosphere is composed of metamorphic rock. The lithosphere is composed of the crust and the uppermost portion of the mantle. The lithosphere is composed of outer mantle material. The lithosphere is composed of the inner portion of the mantle and the outer core. The lithosphere is composed of igneous rock.
The lithosphere is composed of the crust and the uppermost portion of the mantle.
Alfred Wegener's continental drift hypothesis received much hostile criticism and ridicule from the scientific community because of which of the following? There was no correlation of rocks found in adjacent positions on matching continents There is no evidence of past glacial activity in areas that are now tropical. The mechanism he proposed for the movement of the continents. His correlation of fossils was false; they were different species.
The mechanism he proposed for the movement of the continents.
As Heezen and Tharp interpreted the ocean depth data, they identified what unusual feature that hinted at continental drift? Ocean ridges abruptly stop after a few hundred kilometers and then start again after a few hundred more. The oceanic ridges have a cleft, or rift, in the middle rather than a peak. Ocean ridges are unique to the Pacific Ocean. They discovered a chain of very tall volcanoes in the middle of the Atlantic Ocean that do not rise higher than the sea surface. The oceanic ridges have a broad, flat top very much resembling a table top.
The oceanic ridges have a cleft, or rift, in the middle rather than a peak.
Of the following statements about the age of the ocean crust, which one is true? Select only one answer. The oldest ocean crust is about 200 million years old and is located near an ocean trench. The oldest ocean crust is about 200 million years old and is located near the mid-ocean ridge. The oldest ocean crust is about 2 million years old and is located near an ocean trench. The oldest ocean crust is about 2 million years old and is located near the mid-ocean ridge. The oldest ocean crust is about 4.5 billion years old and is located near the edge of a continent.
The oldest ocean crust is about 200 million years old and is located near an ocean trench.
What would happen to the orange liquid in the lava lamp if heat did NOT conduct out of the top of the lava lamp? The orange liquid would stay near the bottom of the lava lamp. The orange liquid would sink toward the bottom of the lava lamp. The orange liquid would stay near the top of the lava lamp. The orange liquid would rise toward the top of the lava lamp.
The orange liquid would stay near the top of the lava lamp.
What did the maps of the ocean floor produced by Bruce Heezen and Marie Tharp reveal about seafloor topography? The seafloor data revealed that the middle of oceans is where continents appear to be drifting toward each other. Ocean floors and continental areas are morphologically very similar to each other. There are ridges near the edges of the oceans, a few hundred miles from the edges of each of the continents. Ocean basins are very flat features. There are ridges in the middle of the ocean basin floors.
There are ridges in the middle of the ocean basin floors.
Why did Heezen and Tharp have to do "inspired guessing" when creating their maps of the ocean floor? They were given only a small portion of the depth data by the Navy. The rest was classified. Data could not be collected for parts of the ocean that were greater than 10,000 feet deep. The data they used came from tracks of ships that overlapped each other. They were limited by the mapping technology of the time. There were gaps in the data that were used to make the map because the tracks of the ships collecting the data were widely spaced.
There were gaps in the data that were used to make the map because the tracks of the ships collecting the data were widely spaced.
What do all plate boundaries have in common? Select only one answer. They are all associated with zones of earthquakes. They are all located along the edges of continents. They occur only on the ocean floor. They occur entirely within the middle of continents. They are all associated with an abundance of volcanic activity.
They are all associated with zones of earthquakes.
What did the continents that formed during the break-up of the supercontinent 600 million years ago look like? The shapes of the Atlantic Ocean continents were almost exactly like the shapes we see today. They were almost exactly like the continent shapes we see on Earth today. They were nothing like the continent shapes we see on Earth today. The shapes of the Pacific Ocean continents were almost exactly like the shapes we see today.
They were nothing like the continent shapes we see on Earth today.
The Alps are an example of ________ plate boundary. a continental-continental divergent an oceanic-oceanic convergent a continental-continental convergent an oceanic-continental convergent a continental transform
a continental-continental convergent
Approximately how long does it take for a complete Wilson cycle to occur? Volcanic arcs are associated with convergent plate boundaries. Volcanic arcs are created at hotspots. Nemataths and volcanic arcs are both the result of volcanic activity. In a volcanic arc, any of the volcanoes can be active at any time. The age of the volcanoes progressively decreases as you move from one end of a volcanic arc to the other.
a few hundred million years
What is a volcanic arc? a row of volcanoes that forms on the overriding plate near a subduction zone a row of volcanoes that forms on the subducting plate near a subduction zone a row of volcanoes that forms on the ocean floor above a mid-ocean ridge a row of volcanoes that forms on the ocean floor above a hot spot
a row of volcanoes that forms on the overriding plate near a subduction zone
What surface feature would you expect to form if both a hot spot and a tectonic plate are stationary? a chain of volcanoes a small hill above the hot spot a single volcano a ring of volcanoes
a single volcano
What was Pangea? a supercontinent that formed 100 million years ago a supercontinent that formed 450 million years ago a supercontinent that formed 300 million years ago a supercontinent that formed 600 million years ago
a supercontinent that formed 300 million years ago
Where is the youngest ocean floor found? along chains of hot-spot volcanoes along the axis of ocean trenches along the crest of mid-ocean ridges along the edges of continents
along the crest of mid-ocean ridges
The Mariana Trench is an example of ________ plate boundary. a continental transform an oceanic-continental convergent an oceanic-oceanic divergent an oceanic-oceanic convergent an oceanic transform
an oceanic-oceanic convergent
The East Pacific Rise is an example of ________ plate boundary. an oceanic-continental convergent an oceanic-oceanic convergent an oceanic transform an oceanic-oceanic divergent a continental-continental divergent
an oceanic-oceanic divergent
Which of the following is characteristic of oceanic-continental convergent plate boundaries? hot spots mid-ocean ridges fracture zones andesitic volcanoes volcanic island arcs
andesitic volcanoes
Where are tectonic plates located? below Earth's surface, near the core just under Earth's surface below Earth's surface, in the upper mantle at Earth's surface
at Earth's surface
Where do most earthquakes occur? at the bottom of the ocean they are evenly distributed all over the world at plate boundaries in the middle of the plates on the continents
at plate boundaries
What is the appropriate term for the movement of the orange liquid in the lava lamp animation? convection conduction evaporation subduction advection
convection
Which type of plate boundary is most closely associated with uplifting continental regions and mountain building? convergent boundaries hot spot boundaries transform boundaries divergent boundaries
convergent boundaries
Plate convergence begins during which stage of the Wilson Cycle? Mature Declining Suturing Juvenile Terminal
declining
The Pacific Ocean is an example of the ________ stage of the Wilson Cycle. juvenile suturing terminal mature declining
declining
Which type of plate boundary is most closely associated with the formation of new ocean floor? hot spot divergent transform convergent
divergent
The Mid-Atlantic Ridge is an example of a: convergent plate boundary (continent-oceanic). divergent plate boundary. convergent plate boundary (continent-continent). transform fault boundary. convergent plate boundary (oceanic-oceanic).
divergent plate boundary.
What are the three types of plate boundaries? divergent, convergent, and transverse digressive, convergent, and transform divergent, convergent, and transform divergent, converse, and transform divergent, converse, and transverse
divergent, convergent, and transform
Plates move apart at __________ boundaries, move together at __________ boundaries, and move side by side at __________ boundaries. convergent/transform/divergent convergent/divergent/transform transform/divergent/convergent transform/convergent/divergent divergent/convergent/transform
divergent/convergent/transform
All continents fit together with the least number of overlaps and gaps when the continents are matched along ________. the edge of the continental shelf oceanic trenches in subduction zones edges at around 2,000 meters depth edges of the deep sea floor current shorelines
edges at around 2,000 meters depth
How often does the Earth's magnetic field switch polarity? every 100,000 to several million years every 500,000 years every 10,000 to 50,000 years every 10,000 to 100,000 years
every 100,000 to several million years
Coral reefs that initially develop along the margin of an island or continent where environmental conditions are suitable are called: atolls. patch reefs. fringing reefs. barrier reefs.
fringing reefs.
Underwater volcanic peaks that resemble volcanoes on land except that they are flat on top are called ________. ultra-slow spreading centers guyots oceanic ridges volcanic arcs oceanic rises
guyots
Which phenomenon can explain the presence of volcanoes in the middle of the Pacific Ocean? transform motion divergence hot spots subduction earthquakes
hot spots
Coral reefs ________. can be found at latitudes above 60° include atolls, barrier, and fringing reefs form when underwater volcanoes are thrust upward during a tectonic event are most common in deep and cold sub-tropical basins were first described by Christopher Columbus during his voyage to Hispaniola
include atolls, barrier, and fringing reefs
Moving from an oceanic ridge to an oceanic trench, the thickness of the lithosphere: randomly varies. increases in proportion to the distance. decreases in proportion to the distance. is unrelated to the distance from the ridge. remains the same.
increases in proportion to the distance.
Climate distribution on Earth is primarily controlled by: plants and animals that live in an area. Earth's geologic history. latitude. presence or absence of glacial debris. longitude.
latitude.
Tectonic plates are pieces of the ________ that float on the more fluid ________ below. crust; lithosphere lithosphere; asthenosphere asthenosphere; lithosphere mantle; crust lithosphere; mesosphere
lithosphere; asthenosphere
Ocean basins with continental margins are representative of the ________ stage of the Wilson Cycle. suturing juvenile mature terminal declining
mature
Which geologic features are associated with divergent boundaries? mid-ocean hot spots and ocean trenches mid-ocean ridges and continental rift valleys mid-ocean ridges and ocean trenches mid-ocean hot spots and continental rift valleys
mid-ocean ridges and continental rift valleys
The Hawaiian Islands are located where the Pacific plate is: being thrust over the North American plate. being subducted beneath Japan. being subducted beneath the North American plate. diving under Japan. moving over a hot spot or mantle plume.
moving over a hot spot or mantle plume.
Complete this statement: Divergence is to moving away as convergence is to _______. moving over moving side by side moving toward moving under
moving toward
Where in a lava lamp would the density of both materials be equal? near the bottom of the lamp nowhere in the lamp near the middle of the lamp almost everywhere in the lamp near the top of the lamp
near the middle of the lamp
Chains of extinct volcanoes that are progressively older as one travels away from a hotspot are called ________. nemataths oceanic rises ultra-slow spreading centers oceanic ridges volcanic arcs
nemataths
Which geologic features are associated with convergent boundaries? ocean trenches and volcanoes mid-ocean ridges and volcanoes ocean trenches and continental rift valleys mid-ocean ridges and continental rift valleys
ocean trenches and volcanoes
The steeply-sloping and slower-spreading parts of the mid-ocean ridge are called ________. oceanic rises guyots oceanic ridges nemataths ultra-slow spreading centers
oceanic ridges
Where would you expect to see alternating bands of rock with different magnetic polarities? on the youngest side of the mid-ocean ridge on the fastest-moving side of the mid-ocean ridge on the slowest-moving side of the mid-ocean ridge on both sides of the mid-ocean ridge on the oldest side of the mid-ocean ridge
on both sides of the mid-ocean ridge
What did the surface of Earth look like 600 million years ago? one large continent surrounded by ocean many small islands surrounded by magma many small islands surrounded by ocean one large continent surrounded by magma
one large continent surrounded by ocean
The study of historical changes of continental shapes and positions is called: paleoclimatology. paleogeography. sedimentology. paleomagnetism.
paleogeography
Fossils of ancient tropical plants are currently found near the poles because the: plants probably were tolerant of both tropical and polar conditions. plants were distributed to current locations by ancient glacial ice sheets. poles were at the equator at times in the geologic past. plants lived in the tropics, but landmasses have drifted to current locations. entire earth had warm, humid conditions at the time the plants were living.
plants lived in the tropics, but landmasses have drifted to current locations.
Which process causes the surface geography of Earth to change over time? plate tectonics rock erosion meteor impacts volcanic eruptions
plate tectonics
When was the Precambrian eon? prior to 100 million years ago prior to 300 million years ago prior to 400 million years ago prior to 600 million years ago
prior to 600 million years ago
Large volcanoes on the seafloor that are cone-shaped on top because they never reached sea level are called: mantle plumes. tablemounts. hotspots. guyots. seamounts.
seamounts
The Himalaya Mountains are an example of the ________ stage of the Wilson Cycle. suturing terminal juvenile declining mature
suturing
Compared to the rest of the planet, an unusually high concentration of hot spots and rifting is located on the continent of Africa. A likely explanation for this is that __________. Africa is just very large the African Plate is essentially stationary with respect to Earth's interior and the thick continental crust acts as a "heat blanket" the thick continental crust acts as a "heat blanket" and a large portion of Africa is located near the equator a large portion of Africa is located near the equator mantle plumes do not occur at divergent plate boundaries, and Africa has no divergent plate boundaries
the African Plate is essentially stationary with respect to Earth's interior and the thick continental crust acts as a "heat blanket"
What is meant by the term plate boundary? the edge of a plate, where two plates meet each other the bottom of the plate, where the plate meets the core the top of a plate, where the crust interacts with the atmosphere the bottom of a plate, where the plate meets the asthenosphere the entire tectonic plate
the edge of a plate, where two plates meet each other
Frederick Vine and Drummond Matthews determined that new ocean floor was being produced at ocean ridges by examining: the magnetic pattern of rocks on the seafloor. apparent polar wandering. glacial debris at various locations. fossils in marine sediments. the location of ancient coral reefs.
the magnetic pattern of rocks on the seafloor.
The flat top of a guyot or tablemount in deep water is evidence that __________. the seamount was once at the surface of the ocean, but is now submerged due to plate movement and erosion when it was near sea level the seamount is an extinct volcano with the crater filled by a solidified lava lake the seamount has been submerged by rising sea level that resulted from global climate change the seamount is an erosional remnant of a flat abyssal plain burrowing organisms have destroyed the peak of the seamount
the seamount was once at the surface of the ocean, but is now submerged due to plate movement and erosion when it was near sea level
Which plate boundary is NOT associated with volcanic eruptions? convergent transform converse divergent
transform
What surface feature provides evidence for the location of hot spots? volcanoes near tectonic plates volcanoes above tectonic plates volcanoes at the edges of tectonic plates volcanoes within tectonic plates
volcanoes within tectonic plates
When will a hot spot volcano become extinct? when the hot spot is carried away from the volcano by the tectonic plate when the hot spot stops sending rising mantle to the volcano when the volcano stops sending rising mantle to the hot spot when the volcano is carried away from the hot spot by the tectonic plate
when the volcano is carried away from the hot spot by the tectonic plate
