Coastal & Marine Geology InfoBank

USGS CMG InfoBank: The Earth's Heat Engines


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Comment: 02:51 - 03:16 (00:25)

Source: Annenberg/CPB Resources - Earth Revealed - 1. Down to Earth

Keywords: "heat engine", "geologic change"

Our transcription: This planet's geologic activity is driven by what geologists refer to as Earth's two heat engines: one internal, the other external.

These are dynamic processes that convert heat energy into mechanical energy which, in turn, causes geologic change.

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Accessibility FOIA Privacy Policies and Notices
U.S. Department of the Interior \| U.S. Geological Survey URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/moviepage/01.01.09.html Page Contact: InfoBank staff Page Last Modified: Wed Aug 27 06:13:17 PDT 2008 (wcs)