Volcanoes 3 3
Upcoming SlideShare
Loading in...5
×
 

Volcanoes 3 3

on

  • 1,173 views

 

Statistics

Views

Total Views
1,173
Views on SlideShare
840
Embed Views
333

Actions

Likes
1
Downloads
14
Comments
0

3 Embeds 333

http://www.mrmartella.com 213
http://mrmartella.com 119
http://webcache.googleusercontent.com 1

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Volcanoes 3 3 Volcanoes 3 3 Presentation Transcript

  • Volcanoes affect Earth’s land, air and water
  • GomaCongo, Africa2002
    Nyiragongo
    nE-"ir-&-'go[ng]-(")gO
  • The Damage:
    • 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.
  • Naples, ItalyPopulation: 1.7 million
  • "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
    Danger:
    Pyroclastic Flows
  • Immediate Effects
    Lava flows
    Ash
    Mudflows
    Pyroclastic flows
    Landslides
    Tsunamis
    Steam Explosions
  • Lava flows
    Most flows move very slowly.
    Will knock down, cover, or burn nearly everything in their path.
  • Volcanic Ash
    Heavy, made of tiny pieces of volcanic rock.
    Causes roofs to collapse, makes roads slippery, clogs up machinery, suffocates plants and animals.
  • Mudflows
    Loose rocks and soil mixed with ice and snow from the top of the volcano.
    Rivers of ash.
    Fast moving mudflows have buried entire towns long distances away.
  • Knocks down and burns everything in its path.
    Fast moving flows can sweep up and over hills then race back downhill.
    Saint Pierre, West Indies (1902): 30,000 people killed in minutes.
    Pyroclastic flows
  • Landslides
    Caused when part of a volcano collapses.
    Rapid downhill movement of rock and soil.
    Large landslides into the sea may cause tsunamis.
  • Tsunamis
    Series of huge waves that are started by earthquakes and volcanoes.
    Can travel at speeds of 450mph and reach heights of 100 feet.
  • Steam explosions
    Uncommon, but can be devastating.
    Happens when lava hits water.
    May be responsible for the entire island of Krakatau exploding in 1883, causing tsunamis that killed over 36,000.
  • Long-term effects
    After eruptions volcanoes can remain dangerous for many years.
    Residual ash can combine with water to form mudflows in areas that receive heavy rains like the Philippines.
  • How dangerous?
    Rank the following in the order of most to least dangerous.
    ______ Lava Flows
    ______ Mudflows
    ______ Volcanic Ash
    ______ Pyroclastic flows
    ______ Landslides
    ______ Tsunamis
    ______ Steam Explosions
    Be ready to defend your choices!