Geologic Time Quiz
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Questions and Answers

What is the largest time unit in geologic time?

  • Eras
  • Epochs
  • Eons (correct)
  • Periods

Which eon encompasses 88% of geologic time?

  • Archaen
  • Hadean
  • Proterozoic
  • Precambrian (correct)

When did geologists start to divide Earth's history into time units?

  • 1820
  • 1805
  • 1795 (correct)
  • 1810

What is the least known about era in geologic time?

<p>Hadean (B)</p> Signup and view all the answers

What is the record of the Earth's history based on?

<p>Rock layers and fossils (A)</p> Signup and view all the answers

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