Natural Disaster
Published on Nov 18, 2015
No Description
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
Volcanoes
Def- Large craters in the earth with vents in the crust that contain molten rock and debris
Photo by gnuckx
Eruptions:
-Caused by high temperature and pressure
-Molten lava rises to the surface of the volcano
-Created from large vents in the earth that contain high temperature
Photo by Stuck in Customs
How do eruptions happen?
-Shifts in tectonic plates cause the pressure and temperature of the volcano to burst and send debris and lava flying through the air
(Lava rises to the surface first)
Photo by Paul RA
Scientific Processes:
Friction causes the plates to erupt
Heat turns debris into lava and magma
Photo by pierre c. 38
Volcano Types:
Cinder Cones
(cone shaped)
Composite Volcanoes (bowl shape)
Shield Volcanoes
(Steep-sided)
Lava volcanoes
(Any type)
Photo by DiverKen
History:
2008- Chaiten, largest eruption since 2002
2010- Mount Merapi, 350,000 peoples were evacuated
2011- Nabro
Second Largest In History:
Mt St. Helens,
Skamania County,
Washington
May 18, 1980
VEI 5
$1.2 billion dollars in damage
57 recorded deaths
Photo by Shogun_X
Negative Effects of Volcanoes:
Forest fires
Ash burial
Gases emitted
Visual limiting
Photo by Armando Maynez
Measuring Tools:
Seismometers measure the rise of magma
SO2 and CO2 Should be identified as well
Photo by Great Beyond
Safety Precations:
All nearby towns and cities should be evacuated immediately to lower death rates
Photo by flequi
Other Reports-
No animals have been reported to sensing volcanic eruptions
(animals can use infrasound to hear what humans cannot)
Sources Cont.
http://www.livescience.com/30507-volcanoes-biggest-history.html
Stfrancis.edu/content/ns/browser/earthsci/student9/Web%20PageMichAmand/Mich...
http://volcanoworld.wordpress.com/2009/03/06/how-do-volcanologists-predict-...
http://www.pbs.org/wnet/nature/episodes/can-animals-predict-disaster/introd...
Photo by Rob-Wei
