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Test Review for Geologic Time Flashcards | StudBud
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Test Review for Geologic Time
Test Review for Geologic Time
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A test review over the Geologic Time Line
Flashcards
32 cards
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Practice quiz
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Host live
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Questions
32
Answers
1
The trilobite is considered to be the most famous:
index fossil
dinosaur
arthropod
amber insect
2
Where are most of the events along the geologic timeline?
Evenly distributed
At the beginning.
Clustered around modern times.
In the middle
3
During which geologic period did the Cascades, Alps, and Himalayas form?
Ordovician Period
Silurian Period
Tertiary Period
Paleozoic Era
4
What is absolute dating?
using the chronological placement to determine the order.
a process of elimination
using radioactive decay to determine age.
relationship between time and space
5
The oldest rock on Earth formed during the _______________.
cenozoic
paleozoic
precambrian
mesozoic
6
Theoretically, how old is the Earth?
3.6 billion
2.6 million
4.6 million
4.6 billion
7
From evidence, the extinction event that put an end to the dinosaurs is believed to have been:
a sudden nuclear winter
a super volcano
An asteroid impact, w/ a force > 100 trillion nuclear bombs
a super glacier
8
Humans appeared in the ______ Era.
Precambrian
Mesozoic
Paleozoic
Cenozoic
9
The Precambrian was when the Earth was still settling and takes up about what % of GTL?
15%
75%
30%
85%
10
The end of most Eras are marked by a major catastrophe causing mass ____________.
extinction of life
increase in layers of rocks
mountain building
increase in new life
11
Geologic time is divided into units based on ______.
types of life-forms living during certain periods
geologic changes
all of these
fossils and rocks
12
Precambrian time began with __________.
rise of dinosaurs
formation of the Earth
formation of Pangea
rise of bacteria
13
How does the Geologic Time Scale describe the early Earth?
well developed with continents, oceans, and atmosphere
life was present from the beginning on all continenets
no atmosphere, well developed land with plants, and animals
crust just forming, atmosphere of carbon dioxide and ammonia
14
According to the GTL, dinosaurs disappeared from fossil record how many years ago?
Dinosaurs are still alive...just no one has ever seen them.
65 million years
65,000 years
6,000 years
15
What three fossils would be representative of the Devonian Period?
saber tooth tiger, wooly mammoth, giant sloth
amphibians, birds, small mammals
flying reptiles, dinosaurs, conifers
ammonites, crinoid stems, armored fish
16
What is the current geologic
era
called?
Cenozoic
Mesozoic
Paleozoic
Cretaceous
17
Which Era includes the Jurassic period?
Phanerozoic
Mesozoic
Paleozoic
Cenozoic
18
Finding the approximate rock age based on the oldest rock being on the bottom is called
historic
absolute
geologic
relative
19
The era of middle life; a time of many changes on Earth.
Mesozoic
Pre-Cambrian
Paleozoic
Cenozoic
20
During which geologic period did earliest reptiles and the great coal-forming forests exist?
Devonian
Mississippian
Quaternary
Pennsylvanian
21
The Paleozoic Era ended in what possible event that caused 95% mass extinction of marine life?
Too much C02, anaerobic bacteria made it toxic
Snowball Earth
both a and b
Long erupting bed of volcanoes in Siberia
22
What is the Geologic Time Scale?
timetine of Earth's life forms and geologic events.
timeline of Earth's geologic events
timeline of Earth's life forms
timeline of Earth's ice ages.
23
On the GTS, where did life first appear on Earth?
in the atmosphere
on the land
in the ocean
24
The first vertebrates were fish. In which period did they first appear?
Cenozoic
Phanerozoic
Archaean
Devonian
25
A fossil of a dinosaur would probably be from the ___.
Mesozoic Era
Paleozoic Era
Cenozoic Era
Precambrian Era
26
Life-forms that
first
appeared in the Cenozoic Era include ______.
reptiles
all of these
humans
mammals
27
Large mammals, megafauna of the Cenozoic Era may have become extinct because of activity of:
all of these
actions of humans
climate change
tar pits
28
Plate tectonics may affect changes in species because movement of plates causes a change in:
all of these
Earth’s surface
climates
the environment
29
What Are Trace Fossils?
fossilized footprints
fossilized animal dung
fossilized worm burrows
all of these
30
As __ evolved, they grew into stromatolites and changed Earth’s atmosphere by producing oxygen:
cyanobacteria
reptiles
trilobitee
dinosaurs
31
The largest divisions in geologic time are ______.
periods
milennia
eons
epochs
32
The Hadean, Archean and Proterozoic Eons are usually grouped into a 'super eon' called the:
Paleozoic
Phanerozoic
Precambrian
Cenozoic
