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Becca Hansen's Volcano Power Point

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  • 1. Volcanoes Becca Hansen EDU 290 8am-9:15am
  • 2. What are volcanoes?
    • Volcano: A mountain where magma erupts from the earth’s surface
  • 3. Why do volcanoes form?
    • Plate tectonics: Huge pieces of the Earth’s crust
    • Plates slide along the mantle
    • Plates move and collide with other plates
      • One plate pushed under another
        • Mountain is formed
  • 4. Where volcanoes form
    • Fault lines
    • Hot spots
    • Ring of fire
  • 5. Types of volcanoes
    • Types:
      • Active
      • Dormant
      • Extinct
    • Shapes:
      • Composite Volcano
      • Cinder Cone Volcano
      • Shield Volcano
  • 6. Types of volcanoes
  • 7. Why volcanoes erupt
    • Rocks melt within the earth
    • Magma rises through vents in earth
    • Explosive vs. Calm eruption
      • Thin magma = calm eruption
      • Thick magma = violent eruption
  • 8. Volcanic eruptions
    • http://video.nationalgeographic.com/video/player/environment/environment-natural-disasters/volcanoes/volcano-eruptions.html
  • 9. Lava vs. Magma
    • Magma: Liquid rock within a volcano
    • Lava: What magma is called after it exits the volcano
    • http://video.nationalgeographic.com/video/player/environment/environment-natural-disasters/volcanoes/volcano- lava.html
  • 10. Famous volcanoes
    • Pompeii (Mt. Vesuvius)
    • Mount St. Helen
    • Hawaii
  • 11. Pompeii
  • 12. Mount St. Helen
  • 13. Hawaii
  • 14. Fun facts!
    • “ Volcano” from the name “Vulcan” the Roman god of fire.
    • Mauna Loa, in Hawaii, is the largest active volcano
    • Volcanoes release pressure from within the earth
    • 1,510 active volcanoes
      • 80 are underwater
  • 15. References
    • Information on volcanoes found at:
    • http ://www.cotf.edu/ete/modules/volcanoes/vtypesvolcan1. html
    • http://www.ussartf.org/ volcanoes.htm
    • http://www.woodlands-junior.kent.sch.uk/Homework/mountains/ volcanoes.htm
    • Pictures found at:
    • http://www.cotf.edu/ete/modules/volcanoes/vtypesvolcan1. html
    • http://elainem2016.edublogs.org/2011/01/26/pompeiimt-vesuvius /
    • http://velvetescape.com/2009/10/plane-views-mt-vesuvius-italy /
    • http://www.documentingreality.com/forum/f181/1980-eruption-mount-st-helens-washington-state-usa-may-1980-a-50484 /
    • http://brainz.org/news/43-earthquake-rattled-mt-st-helens-area-monday/5281 /
    • http://www.mainarticleidea.net/hawaii-volcanoes /
    • http://www.galapagosonline.com/Galapagos_Natural_History/Geology/ Hot_Spots.htm
    • http://virgil.org/dswo/fs/japantour/ iwojima.htm
    • Videos found at:
    • http://video.nationalgeographic.com/video/player/environment/environment-natural-disasters/volcanoes/volcanoes-101. html