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Geologic Time (Grade 10)

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Geologic Time

1. 
Geologic time encompasses all time since
  1. the formation of the universe
  2. the formation of the solar system
  3. the formation of the earth
  4. the formation of life
 
2. 
Order the divisions of geological time from the longest to the shortest.
  1. epochs, periods, eras, eons
  2. eons, epochs, eras, periods
  3. periods, epochs, eras, eons
  4. eons, eras, periods, epochs
3. 
Geologic eras are largely determined by
  1. earth's orbital position
  2. shifts in the fossil record
  3. average global temperatures
  4. distribution of rock sequences
 
4. 
Which correctly orders the three recent geologic eras from oldest to most recent?
  1. Mesozoic, Paleozoic, Cenozoic
  2. Paleozoic, Cenozoic, Mesozoic
  3. Mesozoic, Cenozoic, Paleozoic
  4. Paleozoic, Mesozoic, Cenozoic
5. 
Which is the earliest division of time on the geological time scale?
  1. Hadean
  2. Archean
  3. Quaternary
  4. Phanerozoic
 
6. 
The Archean Eon ranges from approximately                 billion years ago.
  1. 0.5 - 0.1
  2. 2.5 - 0.5
  3. 4.0 - 2.5
  4. 4.5 - 4.0
7. 
In which geologic era do we currently live?
  1. Proterozoic
  2. Paleozoic
  3. Mesozoic
  4. Cenozoic
 
8. 
Which was the largest mass extinction event, killing over 90% of all species?
  1. Permian–Triassic
  2. Ordovician–Silurian
  3. Triassic–Jurassic
  4. Cretaceous–Paleogene
9. 
Trilobites and other early arthropods first appeared during what geologic period?
  1. Devonian
  2. Eocene
  3. Cambrian
  4. Permian
 
10. 
During which time did free oxygen begin to build-up in earth's atmosphere?
  1. Archean
  2. Paleozoic
  3. Mesozoic
  4. Proterozoic
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