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Earth's History 2021 Flashcards | StudBud
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Earth's History 2021
Earth's History 2021
15 terms
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StudBud Administration
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For review for the last summative of the year.
Flashcards
15 cards
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Questions
15
Answers
1
The Geologic Time Scale is
the thickness of sedimentary rock layers
the life forms and geologic events in Earth's history
the time since the evolution of dinosaurs
the rate of fossil formation
2
This era is known as the Age of Mammals.
Paleozoic Era
Cenozoic Era
Mesozoic Era
Cretaceous Period
3
Place these words in order from smallest to largest
epochs, periods, eras, eons
eras, eons, periods, epochs
eras, eons, epochs periods
eons, epochs, periods, eras
4
The largest mass extinction on our planet known to date is the
Devonian extinction
Permian extinction
Cambrian explosion
Cretaceous extinction
5
Which is older? Paleozoic Era or Mesozoic Era?
Mesozoic Era
Paleozoic Era
6
This event marked the explosion of life on Earth
Permian extinction
Burgess Shale discovery
Cambrian explosion
Cretaceous extinction
7
Which category of time is longer on the Geologic Time Scale? Period or Era
Period
Era
8
The Age of Reptiles is known as
Jurassic Period
Silurian Period
Mesozoic Era
Paleozoic Era
9
The Paleozoic Era ended with the
Cretaceous extinction
Permian extinction
Devonian extinction
Cambrian explosion
10
This bacteria is responsible for the Earth's first oxygen.
stromatolites
seaweed
corals
trilobites
11
During the first several hundred million years of this Era, Earth's atmosphere, continents, and oceans formed.
Precambrian
Paleozoic
Mesozoic
Cenozoic
12
Which of these periods does NOT belong in the Mesozoic?
Cretaceous
Jurassic
Permian
Triassic
13
This mass extinction is responsible for the loss of the dinosaurs.
Cretaceous extinction
Cambrian explosion
Permian extinction
Devonian extinction
14
Trilobites are found within which era?
Mesozoic
Precambrian
Paleozoic
Cenozoic
15
Which era are we currently in?
Paleozoic
Precambrian
Cenozoic
Mesozoic
