Coastal & Marine Geology InfoBank

Home FACS Activities Atlas Geology School Related Sites More

USGS CMG InfoBank: Heat Within the Earth

Skip navigational links
Loading
Dictionaries: Our Mapping Systems   The USGS and Science Education   USGS Fact Sheets   Topics   Keywords   Data Dictionary   Metadata Dictionary   Computer Terminology   Digital Formats  
InfoBank Terms: Activity ID   activity overview   crew   digital data   formal metadata   lines   metadata   NGDC   port stops   project/theme   region   ship   stations   time   virtual globe   year  
Data Types: bathymetry   biological   geochemical   gravity   ground penetrating radar   imaging   LIDAR   logs   magnetics   metering equipment   navigation   samples   seismic   total station   definitions disclaimer  
Data Formats: ARC coverage   E00   FGDC metadata   gridded/image   imaging   material   scattered/swath   Shapefile   vector/polygon  
Comment: 14:50 - 15:32 (00:42)
Source: Annenberg/CPB Resources - Earth Revealed - 6. Plate Dynamics
Keywords: "Jason Saleeby", rock, flow, convection, mantle, heat, "radioactive decay", "plate tectonics", element, uranium, thorium, potassium

Our transcription: It is the ability of rock to flow that in part allows the convection process to take place inside the Earth, but that still does not explain why convection occurs in the first place.
The reason that the Earth's mantle is convecting is that first there is still primary heat left from the formation of the Earth, and then there is heat being generated in the Earth by the radioactive decay of a number of elements, primarily uranium, thorium and potassium.
This heat within the interior of the Earth wants to escape and flow out, and the most effective way for it to flow out is by convecting just as a pot of boiling water on a stove would convect.

Geology School Keywords
Skip footer navigational links

Coastal and Marine Science Centers:  Pacific   St. Petersburg   Woods Hole  
InfoBank   Coastal and Marine Geology Program   Geologic Information   Ask-A-Geologist   USGS Disclaimer  


Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/moviepage/05.02.20.html
Page Contact Information: InfoBank staff
Page Last Modified: Thu Oct 31 04:25:49 PDT 2013  (chd)