The Precambrian Period: Events & Facts


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question 1 of 3

What event designates the beginning of the Precambrian eon?

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1. Cyanobacteria are also known as _____.

2. In which eon do scientists theorize the moon was formed by a large collision?

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About This Quiz & Worksheet

Take advantage of these materials to gauge your understanding of the Precambrian period, which consists of the majority of the Earth's history. You'll be tested on key incidents that took place in the three different epochs that made up the Precambrian period.

Quiz & Worksheet Goals

This worksheet and quiz will test you over the following topics related to the Precambrian period:

  • Cyanobacteria
  • The eon that saw the formation of the moon
  • The end of the Precambrian period

Skills Practiced

Use these skills when working with the worksheet and quiz:

  • Information recall - access the knowledge you've gained regarding the beginning of this period
  • Reading comprehension - ensure that you draw the most important information from the related Precambrian period lesson
  • Interpreting information - verify that you can read information regarding the formation of the Earth's atmosphere and interpret it correctly

Additional Learning

The corresponding lesson on the power of this period, The Precambrian Period: Events & Facts, will prepare you to:

  • Chart the Precambrian Period in relation to the history of the Earth
  • Describe the role that blue-green algae had on the environment
  • Give a general description of each of the three periods of the Precambrian period