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Plate Tectonics
Plate Tectonics
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1
Which of the following is a type of volcano that is formed by runny lava?
a cinder cone volcano
a composite volcano
a shield volcano
a stratovolcano
2
Fossils of Lystrosaurus have been found in Antarctica, India, and South Africa. This suggests that these areas were once
connected to one another.
covered by oceanic crust.
home to a wide variety of organisms.
made of the same chemical elements.
3
Which of the following statements concerning magnetic reversal is NOT true?
The north and south magnetic poles have reversed many times in the past.
Iron mineral grains in rock on the ocean floor all point the same direction
Magnetic reversals are recorded in rocks on the ocean floor.
none of the above
4
Lava that is very runny probably...
has been cooled below the surface.
has a low silica content.
comes from explosive volcanoes.
is hotter than most lava.
5
_____ can form when molten rock in the Earth’s mantle burns through the crust.
cinder cone volcanoes
composite volcanoes
fault block mountains
hot spot volcanoes
6
Magma that reaches the Earth's surface may form ____ mountains.
subducted
volcanic
fault-block
all
7
A ____ fault often results when opposing forces cause rock to break and move horizontally.
normal
strike-slip
reverse
block
8
Which type of seismic wave travels the fastest?
a surface wave
an L wave
an S wave
a P wave
9
Molten rock material that has reached the Earth’s surface is called _____.
lava
magma
crust
silica
10
The outermost, rigid layer of the Earth is called the...
lithosphere.
outer core.
asthenosphere.
mesosphere.
11
The type of magma that often produces a violent eruption can be described as...
thin due to low silica content.
thin due to high silica content.
thick due to low silica content.
thick due to high silica content.
12
Which of the following appears to cause movement of Earth's tectonic plates?
convection currents below the lithosphere
magnetic-pole reversals
faults in mountain ranges
energy from volcanic activity
13
What type of mountain is the only one that is formed by adding new material to the Earth's surface?
folded
volcanic
fault-block
normal
14
If a seismograph detects S waves very quickly after it detects P waves, then the earthquake was...
nearby.
far away.
very strong.
very weak.
15
Which of the following theories states that new ocean floor is continuously being created at the mid-ocean ridges?
Continental Drift
Sea-Floor Spreading
Magnetic Reversal
Plate Tectonics
16
The part of the Earth that is a liquid is the...
inner core.
mantle.
crust.
outer core.
17
The ancient continent that contained all the landmasses is called...
Pangaea.
Laurasia.
Panthalassa.
Gondwana.
18
Continental (folded) mountain ranges are usually associated with...
transform boundaries.
convergent boundaries.
normal boundaries.
divergent boundaries.
19
In the diagram below, which type of boundary is occurring at A?
a transform boundary
a convergent boundary
a strike-slip boundary
a divergent boundary
20
The type of tectonic plate boundary that sometimes has a subduction zone is...
divergent.
transform.
convergent.
normal.
21
The strong, lower part of the mantle that lies beneath the asthenosphere is called the...
outer core.
inner core.
mesosphere.
lithosphere.
22
Which point in the illustration represents the epicenter of the earthquake?
point A
point D
point C
point B
23
What is the minimum number of seismograph stations that is necessary to locate the epicenter of an earthquake?
one
three
four
two
24
Earth's oceanic crust is ____ than the continental crust.
thinner and less dense
thinner but denser
thicker and denser
thicker but less dense
25
Sea-floor spreading occurs at which type of plate boundary?
a convergent boundary
a transform boundary
all of the above
a divergent boundary
26
The type of fault that often results when rocks are pulled apart due to tension is called a...
fault block.
strike-slip fault.
normal fault.
reverse fault.
27
A type of fault in which the hanging wall moves up relative to the foot wall is called a...
fault block.
normal fault.
strike-slip fault.
reverse fault.
28
Which of the following was NOT used as evidence to support the theory of continental drift?
the existence of convection currents
the similarity of fossils found on continental coasts
the close fit of continental coastlines
the matching of glacial grooves on different continents
29
The type of fault that often results when rocks are pushed together by compression is called a...
reverse fault.
fault block.
normal fault.
strike-slip fault.
30
Which type of lava erupts and cools underwater, forming rounded lumps?
blocky lava
aa
pillow lava
pahoehoe
31
Long undersea mountain chains that form at divergent boundaries are called...
hot spots.
mantle plumes.
mid-ocean ridges.
subduction zones.
32
Where are volcanoes most likely to form?
along plate boundaries, especially subduction zones.
in deep canyons
in mountainous areas
near the center of continents
33
The ____ is divided into tectonic plates.
lithosphere
asthenosphere
outer core
mesosphere
34
Trenches are formed at ____ plate boundaries.
strike-slip
divergent
transform
convergent
35
When two tectonic plates move away from one another, the boundary between them is called a...
divergent boundary.
convergent boundary.
transform boundary.
subduction zone.
36
Which of the following is a type of volcano that is made entirely of pyroclastic material (cinders, ash, etc.)?
a stratovolcano
a shield volcano
a composite volcano
a cinder cone volcano
37
Most earthquakes occur along or near the edges of the Earth's
continents.
rivers.
tectonic plates.
oceans.
38
Which of the following is not evidence to support the theory of sea-floor spreading?
Earthquakes and volcanoes usually always occur near plate boundaries.
Rocks nearer the mid-ocean ridges are younger than rocks further away.
The discovery of pillow lava at the mid-ocean ridge
Iron mineral grains magnetized in opposite directions.
39
The ____ is made of solid rock that flows very slowly.
asthenosphere
mesosphere
lithosphere
outer core
40
The soft layer of the mantle on which pieces of the lithosphere move is called the...
mesosphere.
inner core.
asthenosphere.
outer core.
41
Strike-slip faults occur along ____ plate boundaries
transcontinental
divergent
transform
convergent
42
The liquid layer that lies beneath the mantle and surrounds the inner core is called the...
lithosphere.
asthenosphere.
mesosphere.
outer core.
43
Which point in the illustration represents the focus of the earthquake?
point B
point A
point C
point D
44
When two tectonic plates slide past each other horizontally, the boundary between them is called a...
divergent boundary.
transform boundary.
subduction zone.
convergent boundary.
45
In the diagram below, which of the following has formed at A?
a mid-ocean ridge
an ocean trench
none of the above
a transform boundary
46
Which layer of the Earth is made up of tectonic plates?
core
lithosphere
mesosphere
asthenosphere
47
The type of tectonic plate boundary involving a collision between two tectonic plates is...
divergent.
convergent.
normal.
transform.
48
The type of fault in which the hanging wall moves down relative to the foot wall is called...
strike-slip.
reverse.
fault block.
normal.
49
The
solid
, dense center of our planet is called the
mesosphere.
inner core.
asthenosphere.
outer core.
50
In the diagram below, which of the following has formed at B?
none of the above
a folded mountain
a fault-block mountain
a volcanic mountain
