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EOSC - Mass Extinctions

Quiz by mskp
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Last updated: January 27, 2023
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First submittedJanuary 21, 2023
Times taken11
Average score37.2%
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Answer
Extinction 1
Late Ordovician
When
450 ma
How Much
60-70%
Why
ice age
Extinction 2
Late Devonian
When
360 ma
How Much
75%
Why
no oxygen
Extinction 3
End Permian
AKA
the great dying
When
251 ma
How Much
90-96%
Why
sea level fall
 
pangaea
so it was ...
dry
 
ocean stagnation
so there was ...
no oxygen
maybe there was a ...
impact
 
siberian traps erupt
for ...
2 ma
and set fire to ...
oil
 
gas
 
coal
and released ...
ghgs
and so ...
temperatures increased
and so ...
clathrates melted
which...
release methane
After
triassic coal gap
plant diversity recovered by:
230 ma
 
ecological space
so...
dinosaurs
Extinction 4
End Triassic
When
201 ma
How Much
70-80%
Who
over half of animals
 
60% of plants
 
ammonites
Index Fossil
conodonts
Why
unclear
 
CAMP
which released ...
co2 and so2
maybe there were ...
impacts
After
dinosaurs take over
Extinction 5
End Cretaceous
AKA
K/Pg extinction event
When
66 ma
How Much
50%
specifically
80-90% marine
 
half of plants
Why
asteroid impact
called the ...
alverez hypothesis
this is supported by the ...
iridium anomaly
there were also ...
soot
 
fern spores
which indicated there were ...
forest fires
this would be located in the ...
chicxulub impact crater
which had ...
tektites
 
shocked quartz
 
suevite
this would have caused ...
vaporization
 
lethal blasts
 
broken ear drums
 
shattered glass
 
tsunami deposits
 
disrupted rainfall
 
tektite rain
 
fire
 
dust
would have resulted in ...
1% surface light
1
freezing temperatures
called an ...
impact winter
 
no photosynthesis
 
food chain collapses
after 1 ...
temperatures rose
because ...
limestones were vaporized
yucatan peninsula had ...
evaporites
like ...
gypsum
which lead to ...
so2 in the atmosphere
and then lead to ...
sulphuric acid rain
which ...
devastated primary producers
like ...
phytoplankton
what else happened?
deccan traps erupted
what doubled?
volcanic activity
what helped species survive?
hiding
 
hibernating
which species could do that?
mammals
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