Chapter 23 Review
The Paleozoic, Mesozoic, and
Cenozoic Eras
When there is no tectonic activity
along the edge of a continent, the
edge is referred to as a ____.
A. coastline
B. passive margin
C. transgression
D. regression
0%
A.
0%
0%
B.
C.
0%
D.
During the ____, all but one of
the major marine phyla appeared.
A. Cambrian explosion
B. Antler Orogeny
C. Caledonian Orogeny
D. Ouachita Orogeny
0%
A.
0%
0%
B.
C.
0%
D.
The series of transgressions and
regressions that produce cyclothems
were likely produced by ____.
A. tectonic collisions
B. volcanic activity
C. mass extinctions
D. glaciation
0%
A.
0%
0%
B.
C.
0%
D.
As North America rifted from Europe
and Africa, a continuous rift system
called the ____ was formed.
A. Gulf of Mexico
B. Cordillera
C. Mid-Atlantic Ridge
D. East African Rift
Valley
0%
A.
0%
0%
B.
C.
0%
D.
The southernmost point to which
glaciers advanced in North America is
marked by the path(s) of the ____.
A. Ohio River and the
Missouri River
B. Missouri River
C. Ohio River and the
Mississippi River
D. Mississippi River
0%
A.
0%
0%
B.
C.
0%
D.
In order to categorize a margin as active or
passive, you must have information
about________.
A. the permeability of the margin
rocks
B. the amount of tectonic activity
along the margin
C. the depth of water that covers the
0%
margin
D. the rate of glacial movement along
the margin
A.
0%
0%
B.
C.
0%
D.
Which line on the graph shows the sea
level change that would result in
continuous shoreline regression?
•
•
•
•
A
B
C
D
0%
1
0%
0%
2
3
0%
4
Seed plants that lived during the Carboniferous impact
life on Earth today because________.
A. they are the ancestors of all plant
life on Earth
B. their remains formed coal, which is
an important resource
C. they produced fossils that are used
to date many geologic events
D. their presence caused oxygen levels
to drop, allowing animals to evolve
0%
A.
0%
0%
0%
B.
C.
D.
A rapid appearance of many new
species of organism’s usually
A. happens just before an
extinction event
B. leads to an increase in
glaciation
C. is directly related to a drop in
0%
sea level
D. happens after a mass extinction
A.
0%
0%
B.
C.
0%
D.
This graph best
represents the populations
of marine groups before
and after the
A. Cambrian explosion
B. Ordovician extinction
C. Permo-Triassic
Extinction Event
D. Alleghenian Orogeny
0%
A.
0%
0%
B.
C.
0%
D.
If two continents of equal size were to
collide and become one, how would the
total area of continental shelf space
associated with the landmass change?
A.
B.
C.
D.
it would be unchanged
it would triple
in would decrease
in would double
0%
A.
0%
0%
B.
C.
0%
D.
Which point on the timeline best indicates the
time when birds first appeared?
•
•
•
•
A
B
C
D
0%
1
0%
0%
2
3
0%
4
The extinction
event shown on the
time line was
• devastating to all land animals
• the most severe extinction event
in Earth’s history
• mild compared to other
extinction events
• most likely caused by
widespread disease
0%
1
0%
0%
2
3
0%
4
The shaded are of this graph
could be used to represent
• the portion of Earth’s land covered with
ice at the peak of the Cenozoic ice ages
• the portion of Earth’s land that was a
part of Pangaea
• the portion of Earth’s history during
0%
which humans have existed
• the portion of Earth’s history during
which tectonic forces acted on Earth’s
surface
1
0%
0%
2
3
0%
4
Series of islands that divided Laurentia
in half from north to south
A. amniote egg
B. Transcontinental Arch
C. Caledonian Orogeny
D. Gondwana
E. mass extinction
F. Ouachita Orogeny
G. horsetail
H. reduction in continental shelf
I. regression
0%
A.
0%
0%
0%
0%
0%
0%
0%
0%
B.
C.
D.
E.
F.
G.
H.
I.
Movement of a shoreline seaward
A. amniote egg
B. Antler Orogeny
C. Caledonian Orogeny
D. Gondwana
E. mass extinction
F. Ouachita Orogeny
G. horsetail
H. reduction in continental shelf
I. regression
0%
A.
0%
0%
0%
0%
0%
0%
0%
0%
B.
C.
D.
E.
F.
G.
H.
I.
Movement of a shoreline inland
A. amniote egg
B. Antler Orogeny
C. Caledonian Orogeny
D. Gondwana
E. mass extinction
F. Ouachita Orogeny
G. horsetail
H. transgression
I. regression
0%
0%
0%
0%
0%
0%
0%
0%
0%
A.
B.
C.
D.
E.
F.
G.
H.
I.
The dying out of an unusually large number of
species over a relatively short period
A.
B.
C.
D.
E.
F.
G.
H.
I.
mass extinction
Antler Orogeny
Caledonian Orogeny
Gondwana
Transcontinental Arch
Ouachita Orogeny
horsetail
reduction in continental shelf
regression
0%
0%
0%
0%
0%
0%
0%
0%
0%
A.
B.
C.
D.
E.
F.
G.
H.
I.
Large Paleozoic continent in the
southern hemisphere
1.
2.
3.
4.
5.
6.
7.
8.
amniote egg
Antler Orogeny
Caledonian Orogeny
Transcontinental Arch
Gondwana
Ouachita Orogeny
horsetail
reduction in continental
shelf
9. regression
0%
0%
0%
0%
0%
0%
0%
0%
0%
1
2
3
4
5
6
7
8
9
Collisional event that joined
Gondwana and Laurasia
1.
2.
3.
4.
5.
6.
7.
8.
amniote egg
Antler Orogeny
Caledonian Orogeny
Gondwana
mass extinction
Ouachita Orogeny
horsetail
reduction in continental
shelf
9. regression
0%
0%
0%
0%
0%
0%
0%
0%
0%
1
2
3
4
5
6
7
8
9
Contains fluid and food, and
protects embryo
1.
2.
3.
4.
5.
6.
7.
8.
Transcontinental Arch
Antler Orogeny
Caledonian Orogeny
Gondwana
mass extinction
Ouachita Orogeny
horsetail
reduction in continental
shelf
9. amniote egg
0%
0%
0%
0%
0%
0%
0%
0%
0%
1
2
3
4
5
6
7
8
9
One possible cause of the PermoTriassic Extinction Event
1.
2.
3.
4.
5.
6.
7.
8.
9.
amniote egg
Antler Orogeny
Caledonian Orogeny
Gondwana
reduction in continental shelf
Ouachita Orogeny
horsetail
Transcontinental Arch
regression
0%
0%
0%
0%
0%
0%
0%
0%
0%
1
2
3
4
5
6
7
8
9
Ancient geographic setting of an
area
1.
2.
3.
4.
5.
6.
Ancestral Rockies
Burgess Shale
cyclothem
paleogeography
passive margin
Taconic Orogeny
0%
1
0%
0%
0%
2
3
4
0%
0%
5
6
Continental edge with no tectonic
activity
1.
2.
3.
4.
5.
6.
Ancestral Rockies
Burgess Shale
cyclothem
paleogeography
passive margin
Taconic Orogeny
0%
1
0%
0%
0%
2
3
4
0%
0%
5
6
Mountain-building event named for the
mountains of eastern New York State
1.
2.
3.
4.
5.
6.
Ancestral Rockies
Burgess Shale
cyclothem
paleogeography
passive margin
Taconic Orogeny
0%
1
0%
0%
0%
2
3
4
0%
0%
5
6
Contains fossils of soft-bodied Cambrian
organisms
1.
2.
3.
4.
5.
6.
Ancestral Rockies
Burgess Shale
cyclothem
paleogeography
passive margin
Taconic Orogeny
0%
1
0%
0%
0%
2
3
4
0%
0%
5
6
Repeating pattern of sedimentary
sequences stacked on top of each other
1.
2.
3.
4.
5.
6.
Ancestral Rockies
Burgess Shale
cyclothem
paleogeography
passive margin
Taconic Orogeny
0%
1
0%
0%
0%
2
3
4
0%
0%
5
6
Mountain range in present-day
Colorado formed by inland uplift
1.
2.
3.
4.
5.
6.
Ancestral Rockies
Burgess Shale
cyclothem
paleogeography
passive margin
Taconic Orogeny
0%
1
0%
0%
0%
2
3
4
0%
0%
5
6
Evaporite rocks are more
permeable than reef rocks.
1. True
2. False
0%
1
0%
2
Sea level increases when the
number and size of glaciers on
Earth increase.
1. True
2. False
0%
1
0%
2
The Cambrian explosion refers to
a rapid increase in volcanic
activity.
1. True
2. False
0%
1
0%
2
Rate of subduction is one factor that
distinguishes the three phases of the
Cordilleran Orogeny.
1. True
2. False
0%
1
0%
2
Reptiles can reproduce on land,
while amphibians need water to
reproduce.
1. True
2. False
0%
1
0%
2
The Permo-Triassic extinction event had a
greater impact on the number of Earth’s
species than did the extinction event at the
end of the Cretaceous.
1. True
2. False
ls
e
0%
Fa
Tr
ue
0%
The tectonic forces that shaped
Earth’s continents no longer have
any impact on Earth’s features.
1. True
2. False
ls
e
0%
Fa
Tr
ue
0%
Dinosaurs’ skeletons can be distinguished
from those of other reptiles by the structure
of the hips and legs.
1. True
2. False
ls
e
0%
Fa
Tr
ue
0%
Rock tossed into the atmosphere
by a meteorite impact can cause
greenhouse warming.
1. True
2. False
0%
1
0%
2
This timeline correctly shows the order
of time periods in the Mesozoic Era.
1. True
2. False
ls
e
0%
Fa
Tr
ue
0%
At the beginning of the Paleozoic, the North
American continent of Laurentia was located
near the Arctic Circle and was surrounded by
ocean.
1. True
2. False
0%
1
0%
2
During the Cambrian, Laurentia was
completely surrounded by passive
margins, thus, no mountain ranges were
actively forming.
1. True
2. False
0%
1
0%
2
Amniote eggs evolved in lobe-finned
fishes, allowing them to overcome their
dependence on water.
1. True
2. False
0%
1
0%
2
The Taconic Mountains of eastern
New York resulted from the Antler
Orogeny.
1. True
2. False
ls
e
0%
Fa
Tr
ue
0%
The largest insects that ever lived
were preserved in the ideal
environment of sandy beaches.
1. True
2. False
0%
1
0%
2
The Great Permian Reef Complex is
the remains of a fossilized barrier
reef.
1.True
2.False
0%
1
0%
2
When Pangaea broke apart, the western
margin of North America was characterized
by a(n) decrease in deformation.
1. True
2. False
0%
1
0%
2
Volcanism returned to the western
coast of North America at the end
of the Eocene.
1. True
2. False
0%
1
0%
2
During the peak of Pleistocene
glaciation, glaciers up to 10-km thick
covered some areas of North America.
1. True
2. False
0%
1
0%
2
Throughout the Early and Middle
Triassic, before Pangaea split apart, this
supercontinent and two oceans defined
Earth’s paleogeography.
1. True
2. False
0%
1
0%
2
The first mammals, birds, and flowering
plants arose during the Cenozoic, which was
a time of many biological firsts.
1. True
2. False
0%
1
0%
2
As the climate cooled during the late Eocene,
forests gave way to open land, which
supported a diversity of large mammals.
1. True
2. False
0%
1
0%
2