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Unit 3 Vocabulary
Unit 3 Vocabulary

... Cinder cone - small, steep-sided volcano that erupts gas-rich, basaltic lava Composite volcano - large, steep sided volcano that results from explosive eruptions of andesitic and rhyolitic lavas along convergent plate boundaries Dissolve - to cause to disperse or disappear Hot spot volcano - that is ...
1 The vast majority of earthquakes and volcanic eruptions occur
1 The vast majority of earthquakes and volcanic eruptions occur

... locations around the world, such as Hawaii, volcanism has been active for very long periods of time. This could only happen, he reasoned, if relatively small, long-lasting, and exceptionally hot regions - called hotspots -- existed below the plates that would provide localized sources of high heat e ...
Makayla Vogel
Makayla Vogel

... The movement of magma within a volcano causes earthquakes (usually small ones), in this way, you can say that the volcanoes "caused" the earthquakes. Only very rarely can a case be made for a large earthquake causing an eruption. Earthquakes make volcanoes. Volcanoes also destroy almost as much as e ...
Nugget
Nugget

Integrated Science Chapter 19 Name
Integrated Science Chapter 19 Name

Powerpoint Presentation Physical Geology, 10th ed.
Powerpoint Presentation Physical Geology, 10th ed.

... zone, typically marked by a deep ocean trench ...
How and Where Volcanoes Form
How and Where Volcanoes Form

... How and Where Volcanoes Form ...
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Sept. 22 Daily Catch

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lesson-2-explore-page-115-shaping-earths-surface

... temperature of the mantle. Magma then rises toward the surface and forms volcanoes on the plate that does not subduct. A line of volcanoes forms parallel to the plate boundary directly above the plate that subducted. How Volcanoes Change Earth’s Surface  Volcanoes erupt in two ways: Sometimes lava ...
Understanding the physical behavior of volcanoes - Beck-Shop
Understanding the physical behavior of volcanoes - Beck-Shop

... with the trench of the Mariana subduction zone. Convergent margins can be produced by subduction of oceanic lithosphere beneath other oceanic lithosphere (island arc) or oceanic lithosphere beneath continental lithosphere (active continental margin). Finally, transform boundaries are areas where pla ...
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Volcanoes-Earthquakes

Poster Example
Poster Example

... The geologic histories of Mars and Earth are quite different/ Earth's geology is dominated by the effects of plate tectonics. The rigid outer shell of the Earth (the lithosphere) is divided into plates that move laterally with respect to one another. Where plates diverge, as at midoceanic ridges, ne ...
Jan - Igneous Rocks
Jan - Igneous Rocks

... Born of Fire Igneous rocks get their name from the latin word for fire “igneus”. The name is appropriate because these rocks are born of fire. Beneath the thin rocky crust of the earth is the inferno of the mantle! The mantle is the origin of this rock type. The Mantle Under the crust is the fiery h ...
Plate Tectonic Outline Notes
Plate Tectonic Outline Notes

... C. ______________________– steep walled depression around a volcano’s vent D. _______________________________ – areas where magma from deep in Earth’s mantle has melted through the crust to form several volcanoes 1. Ex. ___________________________________________ the Pacific Plate is moving over a s ...
Dynamic Earth
Dynamic Earth

... (latitude 21° north) in 1979. Such geothermal vents--called smokers because they resemble chimneys--spew dark, mineral-rich, fluids heated by contact with the newly formed, stillhot oceanic crust. This photograph shows a black smoker, but smokers can also be white, grey, or clear depending on the ma ...
Name - Quia
Name - Quia

... Inside Earth – CRT # 1 Review Chapter 1 Section 1 – Earth’s Interior The Science of Geology (page 17-18) Who are the scientists who study the forces that make and shape planet Earth? ...
Volcanic Eruptions
Volcanic Eruptions

... • Non-explosive eruptions produce lavas, such as a’a, pahoehoe, and pillow lavas. • Volcanoes are classified as active, dormant, or extinct. • Signs that a volcano may soon erupt include earthquakes, surface bulging, and gases emitted, as well as other changes that can be monitored by scientists. ...
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03-10_plate_invest_worksheet10.v2

... To complete this worksheet, see the instructions in the textbook (Chapter 3 Investigation). Table 1. Plate Boundaries of an Unknown Ocean and Continents This perspective view shows two continents, labeled A and B, separated by an ocean.  Use the topography to identify possible plate boundaries and ...
Geography Summer Task
Geography Summer Task

... Iceland. This volcanic land mass has built up over time due to unusually high levels of volcanic activity (a 'mantle plume' located below Iceland results in especially vigorous up-welling of magma). Iceland is populated yet most of the 317,000 people living there feel they are at relatively low risk ...
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The Effects of Plate Movements

... _____________________________________________________________________ A volcano is an opening or rupture in a planet’s surface or crust. Volcanic activity involving the extrusion of rock tends to form mountains or what appears like a mountain over a period of time They are generally found where tect ...
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geography - KCPE-KCSE

... Example – Mt. Longonot, Menengai crater ...
Volcanic hazards and Some surprising impacts on human
Volcanic hazards and Some surprising impacts on human

Unit 6 Earthquakes and Volcanoes
Unit 6 Earthquakes and Volcanoes

... Mercalli Intensity Scale is a scale that measures the intensity of an earthquake. The scale quantifies the effects of an earthquake on the Earth's surface, humans, objects of nature, and man-made structures on a scale of I through XII, with I denoting a weak earthquake and ...
Chapter Pages... 4 ..... 21 landform patterns and processes
Chapter Pages... 4 ..... 21 landform patterns and processes

Plate Tectonics A . Alfred Wegner 1. Continental drift hypothesis a
Plate Tectonics A . Alfred Wegner 1. Continental drift hypothesis a

... plume rises toward surface  2. results in a small volcanic region a few hundred kilometers across called a hot spot  a. hot spot – Unusually hot regions of Earth’s mantle where high­temperature plumes of mantle  material rise toward the surface  b. as the Pacific plate moves over the hot spot, succe ...
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Volcano



A volcano is a rupture on the crust of a planetary-mass object, such as Earth, that allows hot 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 diverging or converging. For example, a mid-oceanic ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates coming together. Volcanoes can also form where there is stretching and thinning of the crust's interior plates, e.g., in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande Rift in North America. This type of volcanism falls under the umbrella of ""plate hypothesis"" volcanism. Volcanism away from plate boundaries has also been explained as mantle plumes. These so-called ""hotspots"", for example Hawaii, are postulated to arise from upwelling diapirs with magma from the core–mantle boundary, 3,000 km deep in the Earth. Volcanoes are usually not created where two tectonic plates slide past one another.Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption. One such hazard is that volcanic ash can be a threat to aircraft, in particular those with jet engines where ash particles can be melted by the high operating temperature; the melted particles then adhere to the turbine blades and alter their shape, disrupting the operation of the turbine. Large eruptions can affect temperature as ash and droplets of sulfuric acid obscure the sun and cool the Earth's lower atmosphere (or troposphere); however, they also absorb heat radiated up from the Earth, thereby warming the upper atmosphere (or stratosphere). Historically, so-called volcanic winters have caused catastrophic famines.
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