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- 1. Multiple Choice
Based on the theory of plate tectonics, it is inferred
that over the past 250 million years North America
has moved toward the
northwest
southwest
southeast
northeast
- 2. Multiple Choice
The inferred latitude of Pennsylvania 362 million
years ago was closest to
where it is now
the North Pole
the Equator
45° south
- 3. Multiple Choice
According to plate tectonic theory, during which
geologic time interval did the continents of North
America and Africa separate, resulting in the initial
opening of the Atlantic Ocean?
Mesozoic Era
Paleozoic Era
Proterozoic Eon
Archean Eon
- 4. Multiple Choice
Which mantle hot spot is correctly matched to its overlying tectonic plate?
Tasman Hot Spot-Pacific Plate
Canary Island Hot Spot-Eurasian Plate
St. Helena Hot Spot-South American Plate
Yellowstone Hot Spot-North American Plate
- 5. Multiple Choice
The diagram shows a tectonic plate boundary. Which mantle hot spot is at a plate boundary like the one shown in this diagram?
Hawaii Hot Spot
Yellowstone Hot Spot
Galapagos Hot Spot
Canary Hot Spot
- 6. Multiple Choice
The map shows California and a section of the San Andreas Fault. What is the primary geologic process occurring along
the San Andreas Fault?
transform movement
spreading movement
subduction
convergence
- 7. Multiple Choice
The diagram shows the magnetic polarity preserved by minerals within the bedrock of the oceanic crust near the Mid-Atlantic Ridge. Letters A, B, C, and D represent locations in the ocean-floor bedrock.
The most recently formed bedrock is found at location
A
B
C
D
- 8. Multiple Choice
The formation of the Canary Islands was primarily caused by their location near a
subduction zone
mantle hot spot
divergent boundary
transform fault
- 9. Multiple Choice
Which evidence causes most scientists to believe that seafloor spreading occurs at the mid-Atlantic Ridge?
Oceanic crust is oldest at the ridge.
Large sedimentary folds exist in the mantle near
the ridge.
Oceanic crust on both sides of the ridge is less
dense than continental crust.
Oceanic crust on both sides of the ridge shows matching patterns of reversed and normal magnetic polarity.
- 10. Multiple Choice
At the Aleutian Trench and the Peru-Chile Trench, tectonic plates are generally
moving along a transform boundary
moving over a mantle hot spot
diverging
converging
- 11. Multiple Choice
Which statement best supports the theory that all the continents were once a single landmass?
Rocks of the ocean ridges are older than those of the adjacent sea floor.
Rock and fossil correlation can be made where the continents appear to fit together.
Marine fossils can be found at high elevations above sea level on all continents.
Great thicknesses of shallow-water sediments are found at interior locations on some continents.
- 12. Multiple Choice
The block diagram represents the present ocean floor. The white arrows show the movement of the ocean floor and the black arrows show the movement of the asthenosphere.
Which characteristic of the ocean-floor bedrock is best described by the plus and minus symbols in the diagram?
plus = older age; minus = younger age
plus = younger age; minus = older age
plus = reversed magnetic polarity; minus = normal magnetic polarity
plus = normal magnetic polarity; minus = reversed magnetic polarity
- 13. Multiple Choice
Base your answer to the following question on the diagram below, which shows details of a section of a rift valley in the center of a mid-ocean ridge. The vertical lines in the diagram represent faults and fractures within the ocean floor bedrock.
What will be the primary result of the continuation of the geologic processes indicated at this location?
Earths magnetic field will reverse direction.
Continental crust will be forced downward.
Earths circumference will increase.
New oceanic crust will form.
- 14. Multiple Choice
The map shows the locations of volcanic islands and seamounts that erupted on the seafloor of the Pacific Plate as it moved northwest over a stationary mantle hotspot beneath the lithosphere. The hotspot is currently under Kilauea. Island size is not drawn to scale. Locations X, Y and Z are on Earth's surface.
According to the data table, what is the approximate speed at which the island of Kauai has been moving away from the mantle hotspot, in kilometers per million years?
1
10
100
1000
- 15. Multiple Choice
On the map, points A through D represent locations on Earth's surface. Which location is positioned over a mantle hot spot?
A
B
C
D
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