Type:

Other

Description:

This brief review of Earth history starts with the Archeozoic Period and goes through the Devonian Period. It explains time divisions and that the basic unit of geologic time is the period, which comprises two or more epochs, and that an era consists of two or more periods. The site goes on to explain what was happening in regard to plate tectonics and organic evolution in each of the periods through the Devonian Period.

Subjects:

  • Science > General
  • Science > Earth Science
  • Science > Geology
  • Science > Physical Sciences
  • Science > Natural History

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12

Keywords:

History/Policy/Law,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-021,Vocational/Professional Development Education,NSDL,Science -- Geology,High School,Technical Education (Lower Division),Science,Undergraduate (Upper Division),Undergraduate (Lower Division),Science -- Physical sciences,Science -- Natural history,Higher Education,Science -- Earth science,Life Science,oai:nsdl.org:2200/20110201173725498T,Physics,Geoscience,Technical Education (Upper Division)

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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