Chapter 13 Section 2 Review Page 330
... http://video.google.com/videoplay?docid=3977416382972126736&q=mt+st+helens+eruption&hl=en ...
... http://video.google.com/videoplay?docid=3977416382972126736&q=mt+st+helens+eruption&hl=en ...
Section 13
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Word format
... The lava from explosive eruptions is silica-rich and very viscous so it doesn’t flow far. Along with pyroclastic flows, it builds up a multilayered, steep-sided volcano called a: __________________________ ; also called a _____________________________ Examples of stratovolcanoes: ___________________ ...
... The lava from explosive eruptions is silica-rich and very viscous so it doesn’t flow far. Along with pyroclastic flows, it builds up a multilayered, steep-sided volcano called a: __________________________ ; also called a _____________________________ Examples of stratovolcanoes: ___________________ ...
Chapter 6 Study Guide
... A(n) _____________ happens when an explosive eruption hurls ash, cinders, bombs, and gases out of a volcano. When plate movement causes the crust to bend downward, what is formed? __________________ A _______ is a weak spot in the crust where magma comes through. Liquid magma flows upward through th ...
... A(n) _____________ happens when an explosive eruption hurls ash, cinders, bombs, and gases out of a volcano. When plate movement causes the crust to bend downward, what is formed? __________________ A _______ is a weak spot in the crust where magma comes through. Liquid magma flows upward through th ...
Chapter 18 - Volcanoes
... B. Types of Magma 1. Basaltic – rich in iron & magnesium, melts around 1000o C. Quiet eruptions Oceanic crust 2. Rhyolitic – high silica content; high water and gas content; explosive! Continental crust 3. Andesitic – mixture of basaltic & rhyolitic, found along continental margins ...
... B. Types of Magma 1. Basaltic – rich in iron & magnesium, melts around 1000o C. Quiet eruptions Oceanic crust 2. Rhyolitic – high silica content; high water and gas content; explosive! Continental crust 3. Andesitic – mixture of basaltic & rhyolitic, found along continental margins ...
chapter_7_volcanoes
... All volcanic rocks are extrusive and most have fine-grained crystals because of quick cooling. Common volcanic rocks include the following: Rhyolite Andesite Dacite Basalt Obsidian (black volcanic glass) Pumice (frothy glass; floats in water; good for pedicures) Rocks with holes (like Swiss cheese) ...
... All volcanic rocks are extrusive and most have fine-grained crystals because of quick cooling. Common volcanic rocks include the following: Rhyolite Andesite Dacite Basalt Obsidian (black volcanic glass) Pumice (frothy glass; floats in water; good for pedicures) Rocks with holes (like Swiss cheese) ...
Ch. 4 Volcanism and Extrusive Ignous Rocks
... • Fragmental - particles blasted apart by explosive eruptions – Dust and ash (<2 mm) – Cinders (2-64 mm) – Blocks and bombs (>64 mm) ...
... • Fragmental - particles blasted apart by explosive eruptions – Dust and ash (<2 mm) – Cinders (2-64 mm) – Blocks and bombs (>64 mm) ...
Force of Volcanoes
... Types of Eruptions and Volcanoes (video) ______________ volcanoes form from long, gradual lava flows, pouring out in all directions. The ___________ ______________ are short and built from these ejected materials, mainly ash and rocks that fall near the summit or crate of the volcano. ______________ ...
... Types of Eruptions and Volcanoes (video) ______________ volcanoes form from long, gradual lava flows, pouring out in all directions. The ___________ ______________ are short and built from these ejected materials, mainly ash and rocks that fall near the summit or crate of the volcano. ______________ ...
Document
... Name ______________________________ Class ___________________ Date __________________ ...
... Name ______________________________ Class ___________________ Date __________________ ...
VOLCANO NOTES
... Composite- tens of miles across and ten thousand or more feet in height. They have moderately steep sides and sometimes have small craters in their summits. Volcanologists call these "strato-" or composite volcanoes because they consist of alternating layers of solid lava flows mixed with layers of ...
... Composite- tens of miles across and ten thousand or more feet in height. They have moderately steep sides and sometimes have small craters in their summits. Volcanologists call these "strato-" or composite volcanoes because they consist of alternating layers of solid lava flows mixed with layers of ...
Questions For Review KEY
... On what kind of a volcano is a volcanic mudflow most likely to develop? Name a recent example. ...
... On what kind of a volcano is a volcanic mudflow most likely to develop? Name a recent example. ...
No Slide Title
... Intermittent eruptions over long time span Mostly Andesite Distribution – Circum-Pacific Belt (“Ring of Fire”) – Mediterranean Belt ...
... Intermittent eruptions over long time span Mostly Andesite Distribution – Circum-Pacific Belt (“Ring of Fire”) – Mediterranean Belt ...
Chapter 5: Volcanoes
... S Magma Chamber: Collection of magma under volcano S Pipe: Long tube connecting chamber to surface S Vent: Opening at top (or sides) where magma leaves ...
... S Magma Chamber: Collection of magma under volcano S Pipe: Long tube connecting chamber to surface S Vent: Opening at top (or sides) where magma leaves ...
volcanoreview
... composite cones, with explosive eruptions and erupted materials such as ash, bombs, and blocks. Mt St Helens ...
... composite cones, with explosive eruptions and erupted materials such as ash, bombs, and blocks. Mt St Helens ...
Volcanoes - sabresocials.com
... Streaming gases carry liquid lava blombs into the atmosphere that rain back to earth around the vent to form a cone. ...
... Streaming gases carry liquid lava blombs into the atmosphere that rain back to earth around the vent to form a cone. ...
Mono–Inyo Craters
The Mono–Inyo Craters are a volcanic chain of craters, domes and lava flows in Mono County, Eastern California, United States. The chain stretches 25 miles (40 km) from the northwest shore of Mono Lake to the south of Mammoth Mountain. The Mono Lake Volcanic Field forms the northernmost part of the chain and consists of two volcanic islands in the lake and one cinder cone volcano on its northwest shore. Most of the Mono Craters, which make up the bulk of the northern part of the Mono–Inyo chain, are phreatic (steam explosion) volcanoes that have since been either plugged or over-topped by rhyolite domes and lava flows. The Inyo Craters form much of the southern part of the chain and consist of phreatic explosion pits, and rhyolitic lava flows and domes. The southernmost part of the chain consists of fumaroles and explosion pits on Mammoth Mountain and a set of cinder cones south of the mountain; the latter are called the Red Cones.Eruptions along the narrow fissure system under the chain began in the west moat of Long Valley Caldera 400,000 to 60,000 years ago. Mammoth Mountain was formed during this period. Multiple eruptions from 40,000 to 600 years ago created the Mono Craters and eruptions 5,000 to 500 years ago formed the Inyo Craters. Lava flows 5,000 years ago built the Red Cones, and explosion pits on Mammoth Mountain were excavated in the last 1,000 years. Uplift of Paoha Island in Mono Lake about 250 years ago is the most recent activity. These eruptions most likely originated from small magma bodies rather than from a single, large magma chamber like the one that produced the massive Long Valley Caldera eruption 760,000 years ago. During the past 3,000 years, eruptions have occurred every 250 to 700 years. In 1980, a series of earthquakes and uplift within and south of Long Valley Caldera indicated renewed activity in the area.The region has been used by humans for centuries. Obsidian was collected by Mono Paiutes for making sharp tools and arrow points. Glassy rock continues to be removed in modern times for use as commercial scour and yard decoration. Mono Mills processed timber felled on or near the volcanoes for the nearby boomtown Bodie in the late 19th to early 20th centuries. Water diversions into the Los Angeles Aqueduct system from their natural outlets in Mono Lake started in 1941 after a water tunnel was cut under the Mono Craters. Mono Lake Volcanic Field and a large part of the Mono Craters gained some protection under Mono Basin National Forest Scenic Area in 1984. Resource use along all of the chain is managed by the United States Forest Service as part of Inyo National Forest. Various activities are possible along the chain, including hiking, bird watching, canoeing, skiing, and mountain biking.