Unit 4 Chapter
... Since magma is less dense than rock will push upward and intrude into the overlaying rock. This can cause it to change (Metamorphic), melt or even crack the surrounding area. Sometimes the magma will cool or solidify without erupting. This will harden within the volcano. After some time, the surroun ...
... Since magma is less dense than rock will push upward and intrude into the overlaying rock. This can cause it to change (Metamorphic), melt or even crack the surrounding area. Sometimes the magma will cool or solidify without erupting. This will harden within the volcano. After some time, the surroun ...
Section 6.1 Volcanic eruptions
... Produced when enormous amounts of hot ash, dust, and gases are ejected from a volcano Speeds up to 200 km/h Temperatures over 700 C ...
... Produced when enormous amounts of hot ash, dust, and gases are ejected from a volcano Speeds up to 200 km/h Temperatures over 700 C ...
Geology 101 Homework 4
... 4) Explain the three ways magma forms inside the Earth (p. 140). What is the relationship between plate tectonic setting and the way magma forms? (p. 156) Which magma formation process occurs most frequently inside the Earth? 5) What shapes do bodies of igneous rock form when they intrude the Earth? ...
... 4) Explain the three ways magma forms inside the Earth (p. 140). What is the relationship between plate tectonic setting and the way magma forms? (p. 156) Which magma formation process occurs most frequently inside the Earth? 5) What shapes do bodies of igneous rock form when they intrude the Earth? ...
Chapter 18 - Volcanoes
... 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 ...
... 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 ...
Document
... Section: Volcanic Eruptions 1. Volcanic eruptions can be______________________ times stronger than the explosion produced by the first atomic bomb. 2. What is magma? _______________________________________________________________ 3. Magma that flows onto the Earth’s surface is called _______________ ...
... Section: Volcanic Eruptions 1. Volcanic eruptions can be______________________ times stronger than the explosion produced by the first atomic bomb. 2. What is magma? _______________________________________________________________ 3. Magma that flows onto the Earth’s surface is called _______________ ...
01 - Mayfield City Schools
... Section: Volcanic Eruptions 1. Volcanic eruptions can be______________________ times stronger than the explosion produced by the first atomic bomb. 2. What is magma? _______________________________________________________________ 3. Magma that flows onto the Earth’s surface is called _______________ ...
... Section: Volcanic Eruptions 1. Volcanic eruptions can be______________________ times stronger than the explosion produced by the first atomic bomb. 2. What is magma? _______________________________________________________________ 3. Magma that flows onto the Earth’s surface is called _______________ ...
Getting to Know: Effects of Volcanoes
... If a volcanic eruption is explosive, part or all of the volcano may blow up. For example, the Mt. St. Helens eruption left a huge crater in the side of the mountain. The mountain today looks much different than it did before the 1980 eruption. In contrast, a constructive eruption is one that helps b ...
... If a volcanic eruption is explosive, part or all of the volcano may blow up. For example, the Mt. St. Helens eruption left a huge crater in the side of the mountain. The mountain today looks much different than it did before the 1980 eruption. In contrast, a constructive eruption is one that helps b ...
QR-Volcanoes 59 points Using separate pieces of paper, answer
... It is extremely crucial that you understand the meaning of various vocabulary words to gain full comprehension of the chapter’s content. Briefly define each vocabulary term, IN YOUR OWN WORDS, found at the end of the chapter. Use a separate pieces of paper. A. Chapter Questions 2 pts each / -10 pts ...
... It is extremely crucial that you understand the meaning of various vocabulary words to gain full comprehension of the chapter’s content. Briefly define each vocabulary term, IN YOUR OWN WORDS, found at the end of the chapter. Use a separate pieces of paper. A. Chapter Questions 2 pts each / -10 pts ...
Lecture 14 Summary
... in diameter that was ejected from a volcano during an for Volcanic Lava explosive eruption. Types Volcanic bombs - lava fragments that were ejected while viscous (partially molten) and larger than 64 mm in diameter. ...
... in diameter that was ejected from a volcano during an for Volcanic Lava explosive eruption. Types Volcanic bombs - lava fragments that were ejected while viscous (partially molten) and larger than 64 mm in diameter. ...
Volcanic Eruptions - During an eruption, molten rock, or magma, is
... Volcanic Eruptions - During an eruption, molten rock, or magma, is forced to the Earth’s surface - Magma that flows onto the Earth’s surface is called lava Volcanoes – are areas of Earth’s surface through which magma and volcanic gases pass Magma chamber – is a body of molten rock deep underground t ...
... Volcanic Eruptions - During an eruption, molten rock, or magma, is forced to the Earth’s surface - Magma that flows onto the Earth’s surface is called lava Volcanoes – are areas of Earth’s surface through which magma and volcanic gases pass Magma chamber – is a body of molten rock deep underground t ...
Unit test review - hrsbstaff.ednet.ns.ca
... What comes out of a volcano? How does it affect surrounding areas? Effects of ash fall? Viscosity of lava: Aa, pahoehoe, what changes it’s viscosity Pysroclastic flow: how is it formed Volcanic dome Eruption prediction Volcano types (characteristics, eruption types, volcano formation) Eruption types ...
... What comes out of a volcano? How does it affect surrounding areas? Effects of ash fall? Viscosity of lava: Aa, pahoehoe, what changes it’s viscosity Pysroclastic flow: how is it formed Volcanic dome Eruption prediction Volcano types (characteristics, eruption types, volcano formation) Eruption types ...
Composite Volcano or Stratovolcano
... St. Helens and Mount Pinatubo, typically erupt with explosive force: the magma is too stiff to allow easy escape of volcanic gases. As a consequence the tremendous internal pressures of the trapped volcanic gases remain in the pasty magma. Following the breaching of the magma chamber, the magma dega ...
... St. Helens and Mount Pinatubo, typically erupt with explosive force: the magma is too stiff to allow easy escape of volcanic gases. As a consequence the tremendous internal pressures of the trapped volcanic gases remain in the pasty magma. Following the breaching of the magma chamber, the magma dega ...
Volcanic Activity
... • Molten rock, including small components of dissolved gases, produced where lithospheric plates interact with other earth materials is called MAGMA • Lava- magma from a volcano Typically produce composite volcanoes, whose magma is high in ...
... • Molten rock, including small components of dissolved gases, produced where lithospheric plates interact with other earth materials is called MAGMA • Lava- magma from a volcano Typically produce composite volcanoes, whose magma is high in ...
Document
... gas and incandescent volcanic ash and dust Mount Pelee, on the Carribean island of Martinique, 1902 eruption. All but 2 of the more than 20,000 people in the town of St. Pierre were killed. ...
... gas and incandescent volcanic ash and dust Mount Pelee, on the Carribean island of Martinique, 1902 eruption. All but 2 of the more than 20,000 people in the town of St. Pierre were killed. ...
Slide 1
... A volcano is a mountain formed of lava and/or pyroclastic material (hot fragment of preexisting rocks that are blown from the vent of a volcano). ...
... A volcano is a mountain formed of lava and/or pyroclastic material (hot fragment of preexisting rocks that are blown from the vent of a volcano). ...
VOLCANO NOTES
... 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 sand or gravel-like volcanic rock called tephra cinders or volcanic ash. These ...
... 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 sand or gravel-like volcanic rock called tephra cinders or volcanic ash. These ...
Volcanoes - City of Redwood City
... Eruptions are most likely to occur in Hawaii and Alaska. For the Cascade Range in Washington, Oregon, and California, volcanoes erupt on the average of one to two each century. Also, when Cascade volcanoes do erupt, high-speed avalanches of pyroclastic flows (hot ash and rock), lava flows, and lands ...
... Eruptions are most likely to occur in Hawaii and Alaska. For the Cascade Range in Washington, Oregon, and California, volcanoes erupt on the average of one to two each century. Also, when Cascade volcanoes do erupt, high-speed avalanches of pyroclastic flows (hot ash and rock), lava flows, and lands ...
Volcanoes and Igneous Activity Earth
... The Nature of Volcanic Eruptions Viscosity is a measure of a material’s resistance to flow (higher viscosity materials flow with great difficulty; water has very low viscosity) Factors affecting viscosity • Higher temperature - magma is less viscous (or more fluid) • Composition - higher silica (Si ...
... The Nature of Volcanic Eruptions Viscosity is a measure of a material’s resistance to flow (higher viscosity materials flow with great difficulty; water has very low viscosity) Factors affecting viscosity • Higher temperature - magma is less viscous (or more fluid) • Composition - higher silica (Si ...
Effects of Volcanic Eruptions
... nonexplosive eruptions. The lava spreads out over a wide area, creating a volcano with gently sloping sides. ...
... nonexplosive eruptions. The lava spreads out over a wide area, creating a volcano with gently sloping sides. ...
Mount Kilauea, HI
... Ring of Fire that borders the Pacific Ocean. The 1991 eruption came some 450 – 500 years after the last known eruptive activity. This is the largest eruption that has occurred that anyone can remember and the second largest land eruption in the 20th century. Mount Pinatubo is a large, nearly symmetr ...
... Ring of Fire that borders the Pacific Ocean. The 1991 eruption came some 450 – 500 years after the last known eruptive activity. This is the largest eruption that has occurred that anyone can remember and the second largest land eruption in the 20th century. Mount Pinatubo is a large, nearly symmetr ...
Itcha Range
The Itcha Range is a small isolated mountain range in the West-Central Interior of British Columbia, Canada. It is located 40 km (25 mi) northeast of Anahim Lake on the Chilcotin Plateau. With a maximum elevation of 2,375 m (7,792 ft), it is the lowest of three mountain ranges extending east from the Coast Mountains. Two mountains are named in the Itcha Range; Mount Downton and Itcha Mountain. A large provincial park surrounds the Itcha Range and other features in its vicinity. More than 15 animal species are known to exist in the Itcha Range area, as well as a grassland community that is limited only to this location of British Columbia. The Itcha Range resides in the territory of aboriginal peoples who have occupied this region for centuries. This area has a relatively dry environment compared to the Coast Mountains in the west.In contrast to most mountain ranges in British Columbia, the Itcha Range represents an inactive shield volcano. This highly dissected volcanic edifice consists of a variety of rock types, including basanite, hawaiite, trachyte, rhyolite, phonolite and alkali olivine basalt. They were deposited by different types of volcanic eruptions characterized by passive lava flows and explosivity. Two stages of eruptive activity have been identified at the volcano along with three sub-phases that are limited only to the first stage of development. The main body of the Itcha Range is between 3.8 and 3.0 million years old and thus over two million years ago it passed the most active shield stage of life. A long period of dormancy lasting for almost a million years followed, which was interrupted by the post-shield stage of volcanism 2.2 to 0.8 million years ago. More recent volcanic activity in and around the Itcha Range might have occurred in the last 340,000 years to produce cinder cones.The Itcha Range is part of an east-west trending volcanic zone called the Anahim Volcanic Belt. This consists of large shield volcanoes, small cinder cones, lava domes and lava flows that become progressively younger from west to east. Several explanations have been made regarding the creation of this feature, each citing a different geologic process. If volcanic activity were to resume at the Itcha Range, Canada's Interagency Volcanic Event Notification Plan (IVENP) is prepared to notify people threatened by eruptions.