WorksheetsUnit 3 Exam Practice
Total questions: 53
Worksheet time: 27mins
What is the name of the supercontinent that Wegner proposed in his theory of continental drift?
Pangea
Mesosaura
Africana
Panthalassa
Which of the following was evidence that Wegner used for his theory of continental drift?
the magnetic orientation of the rocks on the continents
major river flow on different continents that match
land bridges that still exist between the continents
fossils of the same organisms that were found on different continents
According to the plate tectonic theory, a plate is
continental rock material only
oceanic lithosphere only
both continental and oceanic lithosphere
both continental and oceanic asthenosphere
Along a transform fault boundary.....
new oceanic crust is formed
oceanic lithosphere is destroyed
lithosphere is neither destroyed or produced
new continental crust is formed
Which of the following is a geographic example of a transform fault boundary?
the East African Rift valley
the San Andreas Fault
the Mid-Atlantic Ridge
the Andes Mountain range
A divergent boundary can result in a
continental volcanic arc
subduction zone
rift valley
volcanic island arc
At a divergent plate boundary
new ocean crust is formed
a rift valley forms
large mountains form on either side of the rift valley
all of these answers are correct
At a convergent ocean to ocean plate boundary......
a subduction zone forms
new ocean crust forms
a rift valley forms
large underwater mountains form
What type of plate boundary is illustrated here?
ocean to ocean plate boundary
ocean to continent plate boundary
continent to continent plate bounary
transform plate boundary
What type of plate boundary is illustrated here?
ocean to ocean plate boundary
ocean to continent plate boundary
continent to continent plate bounary
transform plate boundary
What type of plate boundary is illustrated here?
ocean to ocean plate boundary
ocean to continent plate boundary
continent to continent plate bounary
transform plate boundary
At a ocean to ocean convergent boundary, which of the following forms?
a large folded mountain range
a rift valley
a volcanic island arc
large hydrothermal vents
The magnetic polarity in the rocks on the ocean floor suggests.....
evidence for seafloor spreading
that the theory of plate tectonics is wrong
that the magnetic poles of the earth don't change
that continents don't move
Along a subduction zone, an oceanic plate descends into the earth's mantle in a process called
ridge-pull
ridge-push
slab-pull
slab-push
What causes the convection currents found in the Earth's mantle?
subduction zones
seafloor spreading
gravity
an unequal distribution of heat
As mountains form, what type of deformation causes rocks to break or fracture?
elastic deformation
ductile deformation
brittle deformation
stress deformation
At convergent plate boundaries, what type of stress occurs on the rocks?
compressional stress
shear stress
tensional stress
erosional stress
At divergent plate boundaries, what type of stress do the rocks go through?
shear stress
compressional stress
tensional stress
erosional stress
Along a fault line where the hanging wall moves down relative to the footwall, that is known as a
reverse fault
normal fault
thrust fault
strike-slip fault
The collection of processes that forms mountains is called
tension
orogenisis
synclines
regeneration
When rocks change their shape that is called
faulting
folding
stress
deformation
Mountains that form along continent to continent boundaries are called
volcanic mountains
fault-block mountains
folded mountains
strike-slip mountains
Mountains that form along divergent plate boundaries are called
volcanic mountains
fault-block mountains
folded mountains
strike-slip mountains
Mountains that form along ocean to ocean plate boundaries are called
volcanic mountains
fault-block mountains
folded mountains
strike-slip mountains
What force controls isostatic adjustment of the Earth's crust?
convection currents in the Earth's mantle
compression of the Earth's crust along the Himalayan mountains
gravity
volcanic activity along the mid-ocean ridge
When an earthquake occurs energy radiates from the _____ in all directions.
fault
focus
seismic center
epicenter
A fault is
a place on Earth where earthquakes cannot occur.
a fracture in the Earth where movement has occurred.
the place on Earth's surface where structures move during an earthquake.
another name for an earthquake
Major earthquakes are sometimes preceded by smaller earthquakes called
aftershocks
surface waves
foreshocks
focus shocks
The San Andreas fault is a type of ______________ boundary.
divergent
fracture
thrust-fault
transform
A seismogram shows that P waves travel _______
at the same speed as surface waves.
at the same speed as S waves.
slower than S waves.
faster than S waves.
Which of the following statements is true about S waves?
They travel only through Solids.
They travel through both solids and liquids.
They travel only through liquids.
They are the most destructive wave.
According to the graph, when will the first S wave be received, if an earthquake epicenter is approximately 1500 km from the seismic station?
6 minutes
9 minutes
4 minutes
5 minutes
According to the graph, if the first P-wave arrived at a seismic station at 9:00 UTC, and we know the epicenter is 600 miles away, what time did the earthquake actually occur?
9:02 UTC
9:04 UTC
8:58 UTC
8:56 UTC
The distance between a seismic station and the earthquake epicenter is determined from the
arrival of P and S waves
intensity of the earthquake
measurement of the amplitude of the surface waves
calculation of the earthquake magnitude
In which of the following areas would the damage from a 6.8 magnitude earthquake, likely be the greatest?
lightly populated rural area
heavily populated area with older building structures
heavily populated area with new modern constructed steel framed buildings
in a marsh or wetland area
Tsunamis are
more dangerous to ships that are sailing in the open ocean
waves that do not cause damage on land
a succession of waves set in motion by an underwater earthquake
waves that are produced by strong winds
In areas where unconsolidated (loose) sediments are saturated with water, earthquakes can turn stable soil into a fluid like substance in a process called
tidal effect
fault creep
liquefaction
underwater landslides
Most of the information about Earth's interior was obtained by studying
seismic waves
rocks on the ocean floor
meteorites
drilling for oil and fracking
What layers of the Earth make up the lithosphere?
the crust and lower mantle
the crust and upper mantle
the continental crust and oceanic crust
the upper and lower mantle
Magma with the lowest viscosity would have the following characteristics...
high silica, high temperature, and highest gas content
low silica, high temperature, and lowest gas content
high silica, low temperature, and higher gas content
low silica, low temperature, and lower gas content.
Magma with the highest viscosity would have the following characteristics...
high silica, high temperature, and highest gas content
low silica, high temperature, and lowest gas content
high silica, low temperature, and higher gas content
low silica, low temperature, and lower gas content.
A lava flow with a smooth, thin, rope-like structure is
a pyroclastic flow
an ash flow
pahoehoe
aa
A volcano that is fairly symmetrical and has both layers of lava and pyroclastic flow deposits is a
cinder cone volcano
shield volcano
composite volcano
pyroclastic volcano
Lava plateaus form when
pyroclastic flows erupt from volcanoes
the top of a volcano collapses
fluid basaltic lava flows out of fissures
igneous rock intrudes into layers of sedimentary rock
The smallest solid particles (<2mm in diameter) ejected from a volcanic eruption are known as
volcanic ash
lapilli
volcanic bombs
volcanic blocks
What feature is labeled A in this picture?
conduit (central vent)
crater
magma chamber
cone
What is true about all plutons?
They form above the Earth's crust.
They are made of limestone rock
They form below the Earth's surface.
They are found deep in the ocean.
What pluton is a horizontal intrusive igneous body formed when magma is injected between layers of sedimentary rock and cools?
stock
dike
sill
batholith
What pluton is a huge magma chamber that has cooled?
dike
batholith
sill
lacolith
What gases are expelled by a volcanic eruption?
Nitrogen and Carbon dioxide
Carbon dioxide and phosphorus
Oxygen and Nitrogen
Carbon dioxide and water vapor
Which of the following plays a major role in determining the form of the volcano?
elevation above sea level
local soil type
magma composition
nearness to other volcanoes
In this picture, which profile is characteristic of a shield volcano?
a
b
c
none of the choices
Yellowstone is thought to be associated with what type of tectonic setting?
divergent plate boundary
convergent ocean to ocean boundary
intraplate hot spot
transform boundary
