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Natural Disasters

Natural Disasters. By: Grayson . Where does your disaster happen. Volcanoes typically happen/erupt on fault lines like the Ring of Fire A fault line is where a plate in the Earth cracks. How often does your disaster happen.

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Natural Disasters

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  1. Natural Disasters By: Grayson

  2. Where does your disaster happen • Volcanoes typically happen/erupt on fault lines like the Ring of Fire • A fault line is where a plate in the Earth cracks

  3. How often does your disaster happen Volcanoes erupt when earthquakes happen around volcanoes and magma, hot rock and ash it pushed out and explodes

  4. What structures/features are involved in your disaster • When volcanoes erupt the features involved are hot rock, ash magmaand earthquakes.

  5. What typically happens • Volcanoes are mountains. When they erupt earthquakes start happening around the volcano. The volcano will start to bulge and when it erupts ash, hot rock, and sometimes magma explodes out of the top and there are landslides.

  6. Most extreme outcome • The most extreme eruption would involve huge earthquakes and an eruption that could kill hundreds of people. It would also have big landslides.

  7. Measurement • One way to measure volcanoes is with the VEI or Volcanic Explosively Index. This will help you find volcanoes explosive value. It was created by Chris Newhall with the U.S. Geological Survey and Stephen Self of the university of Hawaii in 1982.

  8. After effects • After a volcano there might be debris everywhere and small earthquakes. It can decrease the wildlife in the area. It can also start wildfires.

  9. Key terms • Strato volcanoes (volcanoes that erupt hot rock and ash only ) • Mantle (the layer of earth right under the crust) • Tectonic plates • Fault lines • Ring of fire

  10. Other facts • Earthquakes cause volcanoes to erupt • Lava is also called molten rock or magma • Landslides often happen when volcanoes erupt • Strato volcanoes are more common

  11. Sources • http://vulcan.wr.usgs.gov/Glossary/PlateTectonics/Maps/map_plate_tectonics_world.html • http://en.wikipedia.org/wiki/Magma • http://www.theseattletraveler.com/2007/05/27th-anniversary-of-the-mount-st-helens-eruption/ • http://en.wikipedia.org/wiki/Volcanic_Explosivity_Index

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