Volcano, Volcanic Volcano And Volcanic Ash

There are different types of volcanoes, such as shield volcanoes, composite volcanoes, and cinder cone volcanoes that are mentioned in Chapter 9, page 312 of Earth Science. (Refer to figure 2 for volcano type examples.)

Anpother factor that can have an impact on the level of hazard posed by a volcano is the type of plate margin on which it occurs. Volcanoes occuring at constructive plate boundaries are usually much less violent than those occuring at destructive plate boundaries. This is because the magma produced by plates moving apart is Basic, and therefoe has a low viscosity, allowing it to flow easily. The lava is produced from a central vent or fissure and erupts regularly but not usually violently. Also,constructive plate boundaries are often found under the sea and create submarine volcanoes, such as along the Mid-Atalntic ridge, so pose few threats to humans. As a result, the hazards posed by volcanoes at constructive plat eboundaries is relatively low. However, the subduction of one plate under another at destrctive plat eboundaries can form an acidic magma chamber, due to the build up of intense heat. Acidic magma is very viscous and resisitant to flow, meaning that there is often a huge build up of pressure, which can result in very violent and dangerous eruptions involving ash and pyroclastic flow. This can pose a a serious hazard. Pyroclastic flowsa are extremely dense, containing toxic gases at very high temperatures, and can move at speeds over 100km/h. The consequences of such an unpredictable hazard can be extremely seruous

Volcanoes can be found throughout the entire world and are formed when there is a rupture in the mantle of the Earth's crust. This effect allows the output of volcanic lava, ash, and various types of gases. These tectonic plate breaks are normal, the planet Earth is divided into 17 tectonic plates and consistently move against each other forming shifts from low to high intensity. It can cause displacement of earth or water.

Volcanoes are one of the most destructive, yet, most beautiful things on Earth. They can make a famous city choke in its own ashes in one day, like Pompeii. Or they can turn a once damaging mountain into a graceful and peaceful home for new life, like Mount St. Helen’s. All volcanoes are unique, and no two are the same. Some erupt differently than others, some look different than others, and all are located in different spots all over the world. I learned this while completing the project and the five volcanoes I researched are examples of my discoveries. The five volcanoes I researched were Mount Hood, Mount Mageik, Long Island, Mount Muria, and Las Pilas.

One physical factor which causes differences in a volcanic hazard is the steepness of the volcano. If the volcanoes sides are of a steep gradient then the

Feel free to stretch, it's been a long ride. We will be stopping by a restaurant later to get some lunch. In front of you, you can see Humphreys Peak, the tallest mountain in the San Francisco Peaks. The San Francisco Peaks is actually a volcanic mountain range and is part of the San Francisco volcanic field. The peaks were once a stratovolcano but is now eroded and are the remains of the volcano. It is the only stratovolcano in the San Francisco Volcanic Field. The tallest mountain, Humphreys Peak, is about twelve thousand, six hundred and thirty-three feet in elevation, which is also three thousand, eight hundred and fifty-one meters tall. In fact, Humphreys Peak is the tallest point in all of Arizona. Also in this area, are more than six hundred volcanoes. Most of the volcanoes found here are basalt cinder cones. These volcanoes are relatively small. They are also usually less than one thousand feet in elevation. Another fact about these basalt cinder cones is that they are formed within a range of a couple of months to a couple of years. The San Francisco Volcanic Field also has several lava domes. Lava domes are formed by dacite and rhyolite magmas. Both of those types of magma are very rich and high in silica. So, as a result, the dacite and rhyolite magmas are very viscous and thick. As a matter of fact, the magmas are so viscous is thick that when volcanoes erupt, the magma tends to pile up and form very steep sided masses, which are the domes.

The Earth’s outer crust is made up many tectonic plates that move over the surface of the planet. When the plates come collide, volcanoes will form sometime (National Ocean Service). Volcanoes can also form in the middle of a plate, where magma rises upward until it erupts on the sea floor, at what is called a “hot spot” (National Ocean Service). A hot spot is a plume of magma or molten rock that rises from within the Earth then reaches the surface forming underwater volcanoes which may grow tall enough to

Volcano: a mountain or hill that has a crater or vent that lava, rock fragments, vapor, and gas that erupts through earth's crust. According to the google dictionary.

To begin, a volcano is a mountain with an opening in the top or side that sometimes sends out rocks, ash, lava, in a sudden eruption (Merriam-Webster, n.d.). A volcano erupts when pressure builds inside the mountain. Magma, lava while it is inside the volcanoe, pushes through the weakened crust. When this built up pressure is released, Earth’s plates move causing a volcanic eruption. Also, dangerous flows of steaming lava can reach up to 2,000

There are basically two types of volcanos: the active and the inactive ones. And just like in the movies, once the volcano erupts, its lava melts everything

Volcanos typically formed as a consequence of plate tectonics. In fact, they tend to form when plates converge into each other. In the process of subduction, one plate of the lithosphere, cupped by oceanic crust, slides beneath another one, giving origin to a subduction zone. While sliding down, heat is generated and water is released, causing the formation of magma that rises up to the surface and forms volcanos parallels to overriding plate. The Pacific West region of the United States is known for presenting this type of structure in which the oceanic lithosphere pushes towards the continent and sinks down into the asthenosphere.

Volcanoes exist all around the world. My volcano is Mount Rainier before we get into that here are some things about all volcanoes. A volcano is a point in the earth where magma pushes up through the crust and spits out ash,gas and lava. Volcanos can be deadly, the gas can kill you and the ash can burn also bury you. There are different kinds of lava, one is called pahoehoe it is a fast moving lava that is smooth looking. Another one is aa, a slow moving lava that is sharp looking like glass. There are also different kinds of lava flows, one is the pyroclastic which is an explosive lava flow that throws out rocks and lava. The magma/lava comes from a chamber in the crust called the magma chamber. There is a long pipe that takes the magma/lava

Cinder cone volcanoes (also called scoria cones) is an easily recognized volcano. These volcanoes mainly consist (little in size) loose, grainy cinders which is consisting normally of basaltic and a andesitic material but there is almost no lava. Cinder cones are generally small volcanoes (compared to other volcanoes). They are usually only around a mile across in width and up in height, about 1,000 feet high. They have quite steep sides and will usually have a regularly small crater on the top of the volcano. Often the cinder cones are put into a higher class of volcano (they are a major type of volcano). Cinder cone volcanoes are one the most common volcanoes and they generally what we think of when we think volcanoes. Airborne fragments

This is only a general overview of the inner workings of volcanoes and their eruptions. For more infomation, visit Volcano World -- The Premier Source of Volcano Info on the Web.

Stratovolcanoes or composite volcanoes are steep sided and symmetrical, examples include Mount Kilimanjaro, Mount Rainer, and Mount Fuji. The peaks of composite volcanoes are built of alternating layers of pyroclastic debris capped by high viscosity andesitic to rhyolitic lava flows that solidify to form protective caps (Abbott 2014). Magma of stratovolcanoes is of high