16mm Filmography
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The Earth's Crust

Describes the earth's crust as a thin skin of rock which slows down the cooling of the hot core and mantle. Tells how the temperature of the crust increases with depth and names the three main sources of heat. Explains the contracting earth theory. Describes earthquakes resulting from movement along faults and from volcanic eruptions.

More in Physical World Series

  1. Exploring The Atmosphere 1969
  2. Exploring The Earth's Crust 1969
  3. The Earth's Crust 1969
  4. The Oceans 1969

Related films

Sources

  1. A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
  2. 16mm Filmography (legacy record) — catalog record

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