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VOLCANIC ERUPTION |authorSTREAM
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Volcanic Eruptions Slideshow |authorSTREAM
Volcanic Eruptions Slideshow authorSTREAM
Volcano powerpoint #2
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how does a volcano erupt ppt online download : To understand how volcanoes erupt, one first needs to consider the structure of the Earth. At the very top is the lithosphere, the outermost layers of the Earth that consists of the upper mantle ...Volcanoes is an interdisciplinary set of materials for grades 4-8. Through the story of the 1980 eruption of Mount St. Helens, students will answer fundamental questions about volcanoes: "What is a volcano?" "Where do volcanoes occur and why?" "What are the effects of volcanoes on the Earth system?" "What are the risks and the benefits of living...A volcano marks a vent where magma, or molten rock, reaches the Earth’s surface in the form of lava and associated materials. While many people envision a conical peak when they think of a volcano, a wide variety of landforms fall into the category, including midocean ridges and the fissures that erupt great sheets of flood basalts.Unlike an effusive eruption where lava travels slowly, an explosive eruption can be dangerous and deadly. Massive volcanic eruptions also leave behind thousands of tons of volcanic ashes that can suffocate humans, animals and plants. Most magma erupts through the central vent or the opening surrounded by the crater.Why do volcanoes erupt? - Nicholas, age 3 years and 11 months, Northmead, NSW. The rock inside the planet we live on can melt to form molten rock called magma. This magma is lighter than the rocks ...Why do volcanoes erupt? Tectonic plates, extreme weather, magma movements and even the effects of climate change can all play a role in triggering volcanic eruptions, writes Ariella Heffernan-Marks.To understand how a volcano erupts, we'll first need to take a look at the structure of the Earth. Earth has different layers which include the inner and outer core, the mantle and the crust.Volcano eruptions happen when magma erupts from beneath the Earth's crust. When a volcano erupts, the magma becomes lava and shoots into the air, eventually running down the side of the volcano. To understand how and why volcanoes erupt, we must first understand the different layers of our planet ...In this we look at how the continuous movement of Earth's tectonic plates results in volcanic activity. In a volcanic eruption, super-heated magma from within the earth’s upper mantle ...Volcanoes are just a natural way that the Earth and other planets have of cooling off and releasing internal heat and pressure. Volcanoes erupt because of density and pressure. The lower density of the magma relative to the surrounding rocks causes it to rise (like air bubbles in syrup). It will rise to the surface or to a depth that is ...

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Why do volcanoes erupt? Let us start with what the earth is made of: The earth is made up of three layer parts. The outer crust is the layer on which we live. It is estimated to be about 1800 miles deep. Then there is the mantle; and then the core (inner and outer core) The mantle is made up of molten material and gases.Why is that when the volcanoes erupt all of that red stuff comes out .And why do people that see were volcanoes move their by them. Is that just dumb or what. So can you answer my question. And would it be good if i do a science fair project it wii be how does volcanoes erupt and why do they erupt.For example, a violently erupting volcano that has produced ash fall, ash flow and volcanic mudflows (or lahars) is likely to do the same in the future.A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows lava, volcanic ash, and gases to escape from a magma chamber below the surface.. Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle. Therefore, on Earth, volcanoes are generally found where tectonic plates are ...Easy Baking Soda and Vinegar Volcano Eruption for Kids We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.If you have ever wondered why volcanoes erupt, this lesson is for you! You will learn about some of the events that lead to a volcanic eruption. As...A volcano erupts when pressure on the magma chamber causes the magma to rise and come out together with gas, rocks and ashes. The violence of an eruption depends on how much pressure the volcano ...How do volcanoes form? Deep inside Earth, between the molten iron core and the thin crust at the surface, there is a solid body of rock called the mantle.When rock from the mantle melts, moves to the surface through the crust, and releases pent-up gases, volcanoes erupt.A volcanic eruption occurs when materials from the Earth's interior are thrown out of a volcano. Lava, rocks, dust, and gas compounds are some of these "ejecta".. Eruptions can come from side branches or from the top of the volcano. Some eruptions are terrible explosions that throw out huge amounts of rock and volcanic ash and can kill many people.One of the most destructive phenomena of a stratovolcano eruption is the lahar: A volcanic mudflow composed of rock fragments and water that funnels at a high speed down drainages. You don’t need an eruption, however, to produce a lahar. Heavy precipitation or rapid melting of a volcano’s snowpack or glaciers can generate these slurries.

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