Coastal & Marine Geology InfoBank

USGS CMG InfoBank: Earth is Still Geologically Active


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Comment: 19:54 - 20:24 (00:30)

Source: Annenberg/CPB Resources - Earth Revealed - 2. The Restless Planet

Keywords: Earth, Mars, Mercury, Moon, "radioactive decay"

Our transcription: In addition to biological activity, another major difference between our planet and most other terrestrial bodies in the Solar System is that the Earth still experiences a great deal of radioactive decay.

Mercury, Mars, and the moon are essentially dead worlds, too cold inside to create new volcanoes or great crustal movement.

It's largely due to internal radioactivity that the Earth is as geologically active planet.

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URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/moviepage/02.01.32.html
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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/02.01.32.html Page Contact: InfoBank staff Page Last Modified: Wed Aug 20 06:13:23 PDT 2008 (wcs)