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Natural Disaster: Volcanoes

It's interesting.
by

Edith Chang

on 19 September 2012

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Transcript of Natural Disaster: Volcanoes

Volcanoes are spectacular to watch from a safe distance. Normally, villages surround the area because of the fertile soil the volcano produces. Volcanoes. How a volcano is formed. A volcano is formed by tectonic plates under the earth's crust. When two plates clash together, it forms a mountain/volcano. The Pacific Ring of Fire is famous because of active volcanoes that border the Pacific Plate ,around the Cocos Plate and the Nazca Plate. Some of the countries that border the Ring of Fire are: Chile, Mexico, U.S., Canada, Russia, Japan, Philippines, Indonesia, New Zealand and Antarctica. Mount Etna How a volcano erupts and what it causes. Famous Volcanoes and their eruptions Mount Etna.
Found in Italy, this volcano is known as the largest active volcano. Most recent eruption was on the 24th of March, 2012. Mount Vesuvius
This mountain is located in Italy. It was responsible for the eruption that covered Pompeii while the mudflows killed the people in Herculanium. It erupted in AD 49. There are 3 types of volcanoes, active, dormant and extinct.

Active Volcanoes mean that they give frequent eruptions.
Dormant Volcanoes can be described as sleeping volcanoes.
Extinct Volcanoes used to be volcanoes but are now mountains. Types of volcanoes. Volcano fact:
Did you know that Australia has one active volcano. It is currently situated on Heard Island. Volcano fact: When lava cools, it can form land or rocks. Some examples are obsidian and basalt. There is also 3 different types of volcanoes

•shield volcanoes
•composite volcanoes
•cinder cones Volcano fact: Volcanoes were named after the Roman god of fire, Vulcan.
The Greek form of Vulcan is also known as Hepheastus, the god of blacksmiths and fire. Volcano Fact:
There are 3 types of lava,basaltic,rhyolite and adesite. Bibliography:

Books:
Natural Disasters Volcanoes
Volcanoes.
Vibrating Volcanoes A volcano erupts by the heat and
pressure inside it. Lava sometimes spurts out and trickle downs the sloples. Something else that might flow down are lahars. Lahars are ash and water mixed together. Other wise known as mudflows. Mount St Helens
It's last eruption was on May the 18th, 1980. It was so strong that it caused the top part of the mountain to be completely blown off. It can be found in the Cascade Range in the US, Washington.
Krakatoa
A volcanic island located in Indonesia. It has currently re-emerged as anakrakatoa meaning the child of Krakatoa in Indonesian. It's recent eruption was this year and is still continuing. The most significant eruption was during August 26-27 1883 where explosions could be heard all over the world Websites:
http://en.wikipedia.org/wiki/Krakatoa
http://en.wikipedia.org/wiki/Mount_St_Helens Thank You!
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