Volcanoes affect Earth’s land, air and water<br />
GomaCongo, Africa2002<br />Nyiragongo<br />nE-&quot;ir-&-&apos;go[ng]-(&quot;)gO<br />
The Damage:<br /><ul><li> Lava cut off routes into Goma, dividing the city in two.
 40% of the town was destroyed.
Tens of thousands of people left homeless.
 Tremors kept shaking the area, collapsing remaining structures.</li></li></ul><li>Naples, ItalyPopulation:  1.7 million <...
&quot;Mount Vesuvius is currently the most threatening volcano in the world, because of the dense population living in the...
Immediate Effects<br />Lava flows<br />Ash<br />Mudflows<br />Pyroclastic flows<br />Landslides<br />Tsunamis<br />Steam E...
Lava flows<br />Most flows move very slowly.<br />Will knock down, cover, or burn nearly everything in their path.<br />
Volcanic Ash<br />Heavy, made of tiny pieces of volcanic rock.<br />Causes roofs to collapse, makes roads slippery, clogs ...
Mudflows<br />Loose rocks and soil mixed with ice and snow from the top of the volcano.<br />Rivers of ash.<br />Fast movi...
Knocks down and burns everything in its path.<br />Fast moving flows can sweep up and over hills then race back downhill.<...
Landslides<br />Caused when part of a volcano collapses.<br />Rapid downhill movement of rock and soil.<br />Large landsli...
Tsunamis<br />Series of huge waves that are started by earthquakes and volcanoes.<br />Can travel at speeds of 450mph and ...
Steam explosions<br />Uncommon, but can be devastating.<br />Happens when lava hits water.<br />May be responsible for the...
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Volcanoes 3 3

  1. 1. Volcanoes affect Earth’s land, air and water<br />
  2. 2. GomaCongo, Africa2002<br />Nyiragongo<br />nE-&quot;ir-&-&apos;go[ng]-(&quot;)gO<br />
  3. 3. The Damage:<br /><ul><li> Lava cut off routes into Goma, dividing the city in two.
  4. 4. 40% of the town was destroyed.
  5. 5. Tens of thousands of people left homeless.
  6. 6. Tremors kept shaking the area, collapsing remaining structures.</li></li></ul><li>Naples, ItalyPopulation: 1.7 million <br />
  7. 7. &quot;Mount Vesuvius is currently the most threatening volcano in the world, because of the dense population living in the area.”- Prof. Franco Barberi, Rome University<br />Danger: <br />Pyroclastic Flows<br />
  8. 8. Immediate Effects<br />Lava flows<br />Ash<br />Mudflows<br />Pyroclastic flows<br />Landslides<br />Tsunamis<br />Steam Explosions<br />
  9. 9. Lava flows<br />Most flows move very slowly.<br />Will knock down, cover, or burn nearly everything in their path.<br />
  10. 10. Volcanic Ash<br />Heavy, made of tiny pieces of volcanic rock.<br />Causes roofs to collapse, makes roads slippery, clogs up machinery, suffocates plants and animals.<br />
  11. 11. Mudflows<br />Loose rocks and soil mixed with ice and snow from the top of the volcano.<br />Rivers of ash.<br />Fast moving mudflows have buried entire towns long distances away.<br />
  12. 12. Knocks down and burns everything in its path.<br />Fast moving flows can sweep up and over hills then race back downhill.<br />Saint Pierre, West Indies (1902): 30,000 people killed in minutes.<br />Pyroclastic flows<br />
  13. 13. Landslides<br />Caused when part of a volcano collapses.<br />Rapid downhill movement of rock and soil.<br />Large landslides into the sea may cause tsunamis.<br />
  14. 14. Tsunamis<br />Series of huge waves that are started by earthquakes and volcanoes.<br />Can travel at speeds of 450mph and reach heights of 100 feet.<br />
  15. 15. Steam explosions<br />Uncommon, but can be devastating.<br />Happens when lava hits water.<br />May be responsible for the entire island of Krakatau exploding in 1883, causing tsunamis that killed over 36,000. <br />
  16. 16. Long-term effects<br />After eruptions volcanoes can remain dangerous for many years.<br />Residual ash can combine with water to form mudflows in areas that receive heavy rains like the Philippines.<br />
  17. 17. How dangerous?<br />Rank the following in the order of most to least dangerous.<br />______ Lava Flows<br />______ Mudflows<br />______ Volcanic Ash<br />______ Pyroclastic flows<br />______ Landslides<br />______ Tsunamis<br />______ Steam Explosions<br />Be ready to defend your choices!<br />

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