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How Volcanoes Work: Products of Eruptions
This site describes volcanic features and phenomena generated by volcanic eruptions. It discusses eruptive products, which are highly variable and largely dependent on the composition, viscosity, and gas content of the erupting magma. In addition to the general discussion on lava flows there are links to detailed discussions on lava flow types and features along with specific information on basaltic, andesite, dacite, and rhyolite lavas. Other links lead to information about pyroclastic flows and lahars. Gaseous emissions are also examined, as are their harmful effects on both local and global scales.
Intended for grade levels:
  • High (9-12)
  • College (13-14)
  • College (15-16)
Type of resource:
  • Visual:
    • Photograph
  • Text:
    • Ref. material
  • Geological Sciences:
    • Geology
  • Natural hazards
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Images credited to government organizations are in the public domain, and can be downloaded and used. It would be appropriate, however, to properly acknowledge the individuals and government agencies for each downloaded image. The remainder of the images and graphics are not in the public domain. These may not be downloaded and used, unless permission is granted from the individuals acknowledged in the expanded caption for each image.
DLESE Catalog ID: DLESE-000-000-005-295
Educational standards:
  • National Science Education Standards (NSES):
    • 9-12:
      • A - Science as inquiry:
        • Understandings about scientific inquiry
      • D - Earth and space science:
        • Energy in the earth system
        • Geochemical cycles
        • Origin and evolution of the earth system
      • F - Science in personal / social perspectives:
        • Natural and human-induced hazards
Related resources:
This resource is referenced by 'How Volcanoes Work'
Resource contact / Creator / Publisher:
Author: Dr Victor E. Camp
Department of Geological Science, San Diego State University