Type:

Other

Description:

Early evidence showing striking similarities between regions on opposite sides of vast oceans suggested that in Earth's distant past what are now separate continents may once have been connected. However, this evidence said nothing about how the continents could have moved to their present positions. This video shows how seafloor spreading creates new oceanic crust and how the crust is destroyed by subduction into Earth's mantle, providing the mechanism and forces that propel tectonic plates across Earth's surface. The segment is two minutes nine seconds in length.

Subjects:

  • Science > Oceanography
  • Science > Earth Science
  • Science > Geology
  • Education > General

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:

NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-021,Education,NSDL,oai:nsdl.org:2200/20111121155525663T,High School,Vocational/Professional Development Education,Undergraduate (Lower Division),Higher Education,Science -- Earth science,Science -- Instructional issues,Science -- Geology,Science -- Oceanography,Geoscience

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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