ND Lab Quiz 1 - Earth Age
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15 Terms
order of categories
eon, era period, epoch
order of eons
1 - Hadean
2 - Archean
3 - Proterozoic
4 - Phanerozoic
which eon is the only one with eras
Phanerozoic
eras in order
1 - Paleozoic
2 - Mesozoic
3 - Cenozoic
Which epoch are we currently in
Holocene
age of Earth
4.5 billion years old
in which epoch did human civilizations start
all human civilizations developed in the Holocene epoch
who lived in the Paleozoic era
ancient animals - earth starts to look like earth with plants, trees, fish, and insects evolving
who lived during the mesozoic era
dinosaurs
who lived during the cenozoic era
age of mammals
what is the difference between the Phanerozoic eon and the proterozoic eon
Proterozoic — “before animals”
Phanerozoic — “visible animals”
In between the Proterozoic and the Phanerozoic is the start of the Cambrian Explosion
Hadean
“Hades”
Earth had a ‘hellish’ landscape
— molten surface, frequent impacts from space, radioactivity
Archean
“beginning, origin”
starts at the age of the earliest known rocks on Earth
Earth is cooling and hardening
how are these chunks (eons) broken up
in between are big changes in climate, mass extinctions and the appearance of animals
dinosaurs - when
65 mya