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The Himalayas in South Asia are an example of what type of plate boundary?
a. convergent oceanic-continental boundary
b. convergent continental-continental boundary
c. divergent boundary d. transform fault boundary
The Himalayas in South Asia are an example of what type of plate boundary?
a. convergent oceanic-continental boundary
b. convergent continental-continental boundary
c. divergent boundary d. transform fault boundary
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
If a deep ocean trench is located adjacent to a continent, active volcanoes would likely be found ____.
a. seaward from the trench b. at the ends of the trench c. along the axis of the trench d. landward from the trench
If a deep ocean trench is located adjacent to a continent, active volcanoes would likely be found ____.
a. seaward from the trench b. at the ends of the trench c. along the axis of the trench d. landward from the trench
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
According to Wegener’s ideas a. continents were once joined b. the Earth was about 6000 years old c. there was no evidence to suggest that the
Earth was changing d. all rocks on Earth were of the same age
According to Wegener’s ideas a. continents were once joined b. the Earth was about 6000 years old c. there was no evidence to suggest that the
Earth was changing d. all rocks on Earth were of the same age
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
The Hawaiian Islands were formed when the Pacific Plate moved over ____.
a. a subduction zone b. the Aleutian Plate c. an ocean ridge d. a hot spot
The Hawaiian Islands were formed when the Pacific Plate moved over ____.
a. a subduction zone b. the Aleutian Plate c. an ocean ridge d. a hot spot
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
Continental volcanic arcs are associated with what type of plate boundary?
a. convergent continental-continental boundary
b. convergent oceanic-continental boundary
c. transform fault boundary d. convergent oceanic-oceanic boundary
Continental volcanic arcs are associated with what type of plate boundary?
a. convergent continental-continental boundary
b. convergent oceanic-continental boundary
c. transform fault boundary d. convergent oceanic-oceanic boundary
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
Which layer(s) of the Earth make up the tectonic plates? a. lithosphere. b. continental crust only c. Continental crust and ocean crust.
d. asthenosphere and top layer of mantle.
Which layer(s) of the Earth make up the tectonic plates? a. lithosphere. b. continental crust only c. Continental crust and ocean crust.
d. asthenosphere and top layer of mantle.
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
What do the strips of magnetism represent on the ocean floor on either side of a ridge?
a. areas where there is no magnetism b. areas where the rocks have a normal
polarity c. areas where the rocks have a reversed
polarity d. areas of different types of rock
What do the strips of low-intensity magnetism represent on the ocean floor?
a. areas where there is no magnetism b. areas where the rocks have a normal
polarity c. areas where the rocks have a reversed
polarity d. areas of different types of rock
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
Which of the following describes a volcanic island arc? a. an arc-shaped volcano in the ocean b. a chain of volcanic islands parallel to an ocean
trench c. a line of volcanoes on a continent, parallel to a
boundary d. a chain of active and extinct volcanoes formed
over a hot spot
Which of the following describes a volcanic island arc? a. an arc-shaped volcano in the ocean b. a chain of volcanic islands parallel to an ocean
trench c. a line of volcanoes on a continent, parallel to a
boundary d. a chain of active and extinct volcanoes formed
over a hot spot
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
The formation of the Hawaiian Islands is associated with ____.
a. a divergent plate boundary b. a transform fault boundary c. a convergent plate boundary d. no plate boundary of any kind
The formation of the Hawaiian Islands is associated with ____.
a. a divergent plate boundary b. a transform fault boundary c. a convergent plate boundary d. no plate boundary of any kind
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
Which situation will produce a deep-focus earthquake? a. Lithosphere ruptures at a transform fault. b. Super-hot mantle rushes to the surface at a hot
spot. c. Magma forces its way through cracks in the
lithosphere. d. Tectonic plates pass each other in a subduction
zone.
Which situation will produce a deep-focus earthquake? a. Lithosphere ruptures at a transform fault. b. Super-hot mantle rushes to the surface at a hot
spot. c. Magma forces its way through cracks in the
lithosphere. d. Tectonic plates pass each other in a subduction
zone.
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
How does the age of seafloor sediments change with increasing distance from the ocean ridge?
a. Age decreases. b. Age increases. c. Age stays the same. d. Age varies without a pattern.
How does the age of seafloor sediments change with increasing distance from the ocean ridge?
a. Age decreases. b. Age increases. c. Age stays the same. d. Age varies without a pattern.
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
The main source of downward convection flow in the mantle is called ____.
a. ridge-pull b. slab-push c. slab-pull d. ridge-push
The main source of downward convection flow in the mantle is called ____.
a. ridge-pull b. slab-push c. slab-pull d. ridge-push
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
Which one of the following has NOT been proposed as a mechanism of plate motion?
a. slab-pull b. mantle convection c. ridge-push d. crust-core convection
Which one of the following has NOT been proposed as a mechanism of plate motion?
a. slab-pull b. mantle convection c. ridge-push d. crust-core convection
100 16,000 200 32,000 500 64,000 1,000 128,000 2,000 250,000 4,000 500,000 8,000 1,000,000
According to whole-mantle convection, ____. a. small amounts of material from the lower
mantle move upward to the surface b. slabs of cold oceanic lithosphere move
down and into the lower mantle c. large slabs of continental crust are pulled
down into the lower mantle d. material from the inner core rises into the
mantle to form super hot plumes
According to whole-mantle convection, ____. a. small amounts of material from the lower
mantle move upward to the surface b. slabs of cold oceanic lithosphere move
down and into the lower mantle c. large slabs of continental crust are pulled
down into the lower mantle d. material from the inner core rises into the
mantle to form super hot plumes
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