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Geologic Time Scale And Mass Extinctions
Test Description: Organization of the geologic time scale and mass extinctions.
Instructions: Answer all questions to get your test result.
1) What is the name of the scale used to organize events in the Earth's history?
A
geography time scale
B
geographic time scale
C
geofossil time scale
D
geologic time scale
2) What is the largest grouping on the geologic timescale?
A
epoch
B
era
C
eon
D
period
3) Approximately how old is Earth?
A
4.6 million years old
B
4.6 thousand years old
C
4.6 billion years old
D
4.6 years old
4) What determines when a period starts or ends on the geologic timescale?
A
new period begins every 100,000 years
B
changes in climate
C
development of new landforms
D
major changes in life
5) Which period are we currently in?
A
cenozoic
B
jurassic
C
quaternary
D
permian
6) Which era are we currently in?
A
mesozoic
B
quaternary
C
permian
D
cenozoic
7) Most of Earth's history occurred in what eon?
A
permian
B
paleozoic
C
phanerozoic
D
precambrian
8) What eon are we currently in?
A
cenozoic
B
precambrian
C
phanerozoic
D
quaternary
9) When reading a geologic time scale, which area on the scale represents the oldest time in history?
A
the middle of the scale
B
the right side of the scale
C
the top of the scale
D
the bottom of the scale
10) Which of the following has the categories of the time scale in order from largest to smallest?
A
epoch, period, era, eon
B
period, eon, era, epoch
C
era, eon, period, epoch
D
eon, era, period, epoch
11) What are the three eras in order from youngest to oldest?
A
paleozoic, cenozoic, mesozoic
B
paleozoic, mesozoic, cenozoic
C
cenozoic, mesozoic, precambrian
D
cenozoic, mesozoic, paleozoic
12) Which of the following is not a period on the geologic time scale?
A
jurassic
B
permian
C
cretaceous
D
precambrian
13) A species completely wiped out is a(n)
A
extinction
B
fossilization
C
mass extinction
D
sedimentation
14) When 50% or more of species on Earth go extinct in a short period of time.
A
mass wipe out
B
mass extinction
C
extinction
D
massive extinction
15) Which mass extinction is known as The Great Dying?
A
devonian
B
permian
C
cretaceous
D
triassic
16) Which of the following is not a cause of mass extinction?
A
climate change, global warming, sea levels rising, atmospheric changes
B
volcanic eruptions, asteroid impacts, climate change, atmospheric changes
C
asteroid impacts, climate change, volcanic eruptions, atmospheric changes
D
atmospheric changes, global warming or cooling, earthquakes, asteroid impacts
17) Good can come from mass extinctions even though organisms are wiped out.
A
true
B
false
18) Mass extinctions are the only cause of a period stopping and a new period starting on the geologic time scale.
A
true
B
false
*select an answer for all questions
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