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The Pacific coastline is found
near a subduction zone.
Which of the following was used as evidence for
topographic profiles of the ocean floors
b. maps on rock magnetism
c. data classifying rocks by age
d. sea floor spreading
e. all of the above
The magnetic pattern from seafloor data recorded off the
coast of Vancouver and Washington State
were created by magnetite in fissure flows
The continents of Eurasia and North America are currently
moving apart at an average rate of
5 cm per year
Which of the following describes earthquakes?
Earthquakes are an abrupt release of energy
The North American Plate
- extends from the middle of the Atlantic Ocean to
- the edge of the Pacific Plate
Which of the following is an example of a
continental convergent plant boundary?
the Himalayan Mountains
Divergent plate boundaries are associated with
a. seafloor spreading.
b. formation of new crust.
c. volcanic action.
d. shallow, low-energy earthquakes.
. How often does the oceanic plate material of
the Earth renew itself; i.e., go through one
every 200 million years
The transform plate boundaries
are exemplified by the San Andreas fault
Where is the longest mountain range on Earth?
Mid-Atlantic Ocean Ridge
Which formula would you use to determine the
age of the Atlantic Ocean basin
D = R T.
What evidence convinced most scientists to
accept the theory of plate tectonics?
b. magnetism of the ocean basin rocks
c. discovery of the Mid-Atlantic Rift zone
d. radiometric dating of the basaltic rocks
What causes the Ring of Fire, which borders much
of the Pacific Ocean?
Which of these waves is classified as a type of
seismic wave following earthquakes?
d. shear waves
Mountains on the Earth are continuously being
Energy from earthquakes is transmitted as light waves.
A philosopher and a meteorologist laid the groundwork for
the idea of moving continents.
Evidence for Earth's magnetic reversals has been
found in the East African Rift Zone.
An earthquake with a magnitude 7 on the Richter Scale
releases 100 times the energy of an earthquake with a magnitude 5.
The ocean floor is a flat plain collecting sediments from
Rocks collected at the Mid-Atlantic Ridge and dated with
radioactive isotopes are among the oldest rocks on earth.
Tidal waves come as frequently as the tides.
Man may have evolved his upright stance from a
need to adapt to divergent plate boundaries.
The Appalachian Mountains are among the youngest
The specific surface features created by convergent plate
boundaries depend on whether the plates are continental or oceanic.
The speed of a seismic wave depends partly on
the type of seismic wave that is moving
What is always characteristic of a tectonic
comprised of crust and some mantle material
Subduction zone regions are often the locations
a. active volcanoes.
b. the disappearance of old plate material.
c. the world's highest mountains.
d. severe earthquakes.
What is the force that moves continents and
c. radioactive decay
d. heat energy left from the great bombardment
mountains have not eroded to a flat plain in the last 500,000 years because
- mountains are reformed by tectonic uplift that
- is greater than or equal to the erosional forces
If you took a vacation driving to the oldest part of the
North American continent you would need to bring a map of
The only currently active plate boundary within
the continental United States is the
San Andreas Fault.
Which of the following would not be seen in the
an old spreading "rift" plate boundary
What part of the Hawaiian Island chain is the oldest?
The difference between continental and ocean
basin rock is
- ocean rocks are basaltic and continental rocks
- are granitic
Earthquakes that measure around 8 on the Richter
scale can be felt by most people but do little damage to buildings
The Grand Canyon is an example of what happens when two
tectonic plates scrape past each other.
Compared to the oceanic plates, the continental
plates are thicker and comprised of lower-density rock.
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