Geologic Time Scale And Mass Extinctions Question Preview (ID: 18004)
Organization Of The Geologic Time Scale And Mass Extinctions.
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Good can come from mass extinctions even though organisms are wiped out.
a) true
b) false
c)
d)
Which of the following is not a cause of mass extinction?
a) climate change, global warming, sea levels rising, atmospheric changes
b) asteroid impacts, climate change, volcanic eruptions, atmospheric changes
c) atmospheric changes, global warming or cooling, earthquakes, asteroid impacts
d) volcanic eruptions, asteroid impacts, climate change, atmospheric changes
Which mass extinction is known as The Great Dying?
a) cretaceous
b) permian
c) triassic
d) devonian
When 50% or more of species on Earth go extinct in a short period of time.
a) extinction
b) mass wipe out
c) massive extinction
d) mass extinction
Which of the following is not a period on the geologic time scale?
a) jurassic
b) cretaceous
c) permian
d) precambrian
A species completely wiped out is a(n)
a) mass extinction
b) extinction
c) fossilization
d) sedimentation
Which of the following has the categories of the time scale in order from largest to smallest?
a) eon, era, period, epoch
b) epoch, period, era, eon
c) era, eon, period, epoch
d) period, eon, era, epoch
What are the three eras in order from youngest to oldest?
a) cenozoic, mesozoic, paleozoic
b) paleozoic, mesozoic, cenozoic
c) cenozoic, mesozoic, precambrian
d) paleozoic, cenozoic, mesozoic
Most of Earth's history occurred in what eon?
a) phanerozoic
b) precambrian
c) paleozoic
d) permian
What eon are we currently in?
a) precambrian
b) phanerozoic
c) quaternary
d) cenozoic
When reading a geologic time scale, which area on the scale represents the oldest time in history?
a) the top of the scale
b) the middle of the scale
c) the bottom of the scale
d) the right side of the scale
Which period are we currently in?
a) quaternary
b) permian
c) cenozoic
d) jurassic
Which era are we currently in?
a) quaternary
b) cenozoic
c) mesozoic
d) permian
Approximately how old is Earth?
a) 4.6 thousand years old
b) 4.6 billion years old
c) 4.6 million years old
d) 4.6 years old
What determines when a period starts or ends on the geologic timescale?
a) new period begins every 100,000 years
b) development of new landforms
c) changes in climate
d) major changes in life
What is the largest grouping on the geologic timescale?
a) period
b) era
c) eon
d) epoch
What is the name of the scale used to organize events in the Earth's history?
a) geographic time scale
b) geologic time scale
c) geofossil time scale
d) geography time scale
Mass extinctions are the only cause of a period stopping and a new period starting on the geologic time scale.
a) true
b) false
c)
d)
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