Sunday, February 20, 2011

What types of Volcanoes in Hawaii

There are many types of volcanoes in Hawaii example like shield volcanoes, cinder cone volcanoes and diamond head volcanoes.Some of the volcanoes are still ative and some of the volcanoes are dormant .Some of the volcanoes are extinct thus mean no harm to human .I will now explain each volcanoes to you.


Shield volcanoes:
so named for their broad, shield-like profiles, are formed by the eruption of low-viscosity lava that can flow a great distance from a vent, but not generally explode catastrophically. Since low-viscosity magma is typically low in silica, shield volcanoes are more common in oceanic than continental settings. The hawaiian volcanic chain is a series of shield cones.Mount haleakala, mount kilauea and mount mauna loa are  example of  active shield volcanoes on hawaii

 Next the cinder cone volcanoes:


This lovely cinder cone is Pu'u ka Pele, sitting on the flank of Mauna Kea volcano, Hawaii.

A cinder cone is a volcanic cone built almost entirely of loose volcanic fragments called cinders . They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit.
 from ;http://en.wikipedia.org/wiki/Volcanic_cone


next is the composite volcanoes:
Composite volcanoes is a tall, conical, volcano built up by many layers  of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruption. The lava that flows from stratovolcanoes typically cools and hardens before spreading far due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica(as in rhyolite, dacite, or andesite, with lesser amounts of less-viscous mafic magma.
information form:http://en.wikipedia.org/wiki/Composite_Volcanoes

 

Reason for trip to take place

Reason for trip to take place in hawaii because hawaii has some of the most gorgeous natural scenery on the face of the planet.
Go to fullsize imageWith native orchids growing wild by the roadside, stunning mountainscapes and dramatic black lava coves filled with electric blue water, Hawaii is often referred to as Paradise.
The collective islands of Hawaii are filled with dormant and active volcanoes that are as beautiful as they are interesting. Whether you bike, ride, hike or fly; volcano tours are an exceptional way to enjoy Hawaii.
One of our most tragic and also our most victorious hours came with the surprise attack by Japan on Pearl Harbor in 1941. You can celebrate the valor and honor of our veterans with a visit to this seaport in person and relive the events of this historic place as you view the USS Arizona, still in her final resting place. The monument and museum offer video presentations, displays and actual memorabilia salvaged from the attack. Pearl Harbor continues to be one of Oahu's most popular attractions.Go to fullsize image

Where Hawaii is located



Hawaii is located at the picture United States,It occupies most of the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of Australiaand active volcanoes make it a popular destination for tourists, surfers, biologists, and volcanologists alike. Due to its mid-Pacific location, Hawaii has many North American and Asian influences along with its own vibrant native culture. Hawaii has over a million permanent residents along with many visitors and U.S. military personnel. Its capital is Honolulu on the island of Oʻahu.
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Tuesday, February 15, 2011

How were Volcanoes in Hawaii Form

Volcanoes are form in earth as the upper surface crust is Moving around .
Bringing the Continental with them overlapping the earth surface, creating a cone shape mountain on earth as it overlap each other.
Some Examples of the Volcanoes Form:
http://higheredbcs.wiley.com/legacy/college/levin/0471697435/chap_tut/images/nw0299-nn.jpg
By the picture you can see that 1 side went down and another side went up.
creating a overlapping and to realease the magma out of the Earth mantle and
it will be called Larva when it comes out

VoLcAnOeS ViDeO