Chapter 6 study guide
... 14. What is the main “thing” magma needs to contain in order to rise to the surface? 15. What is silica? 16. What does silica do to magma? 17. Magma that does not contain a lot of silica is___ and ___ 18. If a volcano erupts quietly, what 2 types of lava flows will it have? 19. If a volcano erupts e ...
... 14. What is the main “thing” magma needs to contain in order to rise to the surface? 15. What is silica? 16. What does silica do to magma? 17. Magma that does not contain a lot of silica is___ and ___ 18. If a volcano erupts quietly, what 2 types of lava flows will it have? 19. If a volcano erupts e ...
Volcanoes and Igneous Activity Earth - Chapter 4 - sir
... Most volcanoes are located within or near ocean basins (at subduction ...
... Most volcanoes are located within or near ocean basins (at subduction ...
Directions: Read the information below. Use this information and
... volcanoes and shield volcanoes. Cinder cones are built from lava fragments called cinders. The lava fragments are ejected from a single vent and accumulate around the vent when they fall back to earth. Cinder cones grow rapidly and soon approach their maximum size. They rarely exceed 250m in height ...
... volcanoes and shield volcanoes. Cinder cones are built from lava fragments called cinders. The lava fragments are ejected from a single vent and accumulate around the vent when they fall back to earth. Cinder cones grow rapidly and soon approach their maximum size. They rarely exceed 250m in height ...
iss__st4_files/Comenius Volcanoes
... magma chamber. Sometimes, this pressure is so high that it can lift the volcano up to a couple of centimeters. ...
... magma chamber. Sometimes, this pressure is so high that it can lift the volcano up to a couple of centimeters. ...
2_2013_papervolcanoactivity
... and are formed largely by the piling up of ash, cinders and rocks, all of which are called pyroclastic (“fire-broken”) material, that have been explosively erupted from the vent of the volcano. As the material falls back to the ground, it generally piles up to form a symmetrical, steep-sided cone ar ...
... and are formed largely by the piling up of ash, cinders and rocks, all of which are called pyroclastic (“fire-broken”) material, that have been explosively erupted from the vent of the volcano. As the material falls back to the ground, it generally piles up to form a symmetrical, steep-sided cone ar ...
Volcanoes and volcanic eruptions
... Montserrat is a small island in the Caribbean. There is a volcanic area located in the south of the island, called Soufriere Hills. The volcanic peak in this area is called Chances Peak, which had been dormant for over 300 years. Then in 1995, the volcano began to give off warning signs of an erupti ...
... Montserrat is a small island in the Caribbean. There is a volcanic area located in the south of the island, called Soufriere Hills. The volcanic peak in this area is called Chances Peak, which had been dormant for over 300 years. Then in 1995, the volcano began to give off warning signs of an erupti ...
Volcano Jeopardy Round 1 Location, location, location! Most
... d. What is the process that melts rock when it rises inside the Earth? Decrease in pressure e. What is the most common way that melt is formed at subduction zones? Addition of water 5. Ashes, ashes, we all fall down! a. What electrical phenomenon can be caused by a volcanic eruption? Lightning ...
... d. What is the process that melts rock when it rises inside the Earth? Decrease in pressure e. What is the most common way that melt is formed at subduction zones? Addition of water 5. Ashes, ashes, we all fall down! a. What electrical phenomenon can be caused by a volcanic eruption? Lightning ...
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 ...
Australia`s volcanic history is a lot more recent than you
... Australia is an old and stable continent with not many geological risks such as major earthquakes and volcanic eruptions. At least that is what most people think. But throughout its geological history Australia has known volcanic activity right up to the time that humans lived here. The most recent ...
... Australia is an old and stable continent with not many geological risks such as major earthquakes and volcanic eruptions. At least that is what most people think. But throughout its geological history Australia has known volcanic activity right up to the time that humans lived here. The most recent ...
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 ...
Volcanoes
... called Olympus Mons and it measures a gigantic 373 miles wide and 13 miles high! 4. There are even volcanoes found on the ocean floor and even under icecaps, such as some of the volcanoes in Iceland. 5. There are 3 stages of a volcano, (active, dormant and extinct.) 6. Some volcanoes are so big they ...
... called Olympus Mons and it measures a gigantic 373 miles wide and 13 miles high! 4. There are even volcanoes found on the ocean floor and even under icecaps, such as some of the volcanoes in Iceland. 5. There are 3 stages of a volcano, (active, dormant and extinct.) 6. Some volcanoes are so big they ...
The Eruption of Mount Pinatubo
... humans. The main killer during an eruption is this deadly cloud of hot steam and ash that travels at over 200 km/h. Ash in the air often triggers torrential rainfall, which washes the ash and mud down the volcano like a river. This flow of molten rock does not travel quickly, so does not cause many ...
... humans. The main killer during an eruption is this deadly cloud of hot steam and ash that travels at over 200 km/h. Ash in the air often triggers torrential rainfall, which washes the ash and mud down the volcano like a river. This flow of molten rock does not travel quickly, so does not cause many ...
Volcano Types - Kenston Local Schools
... summit, and rarely rise more than a thousand feet or so above their surroundings. ...
... summit, and rarely rise more than a thousand feet or so above their surroundings. ...
Volcanoes I - Faculty Washington
... explosive and fatal 1. Lava 2. Pyroclastics - Fragments of rock and lava and ash 3. Nuee Ardente - dense mixture of hot gas and ash Mt. Pelee on Martinique – 60-90mph 4. Lahars - volcanic mudflow 5. Toxic Gases 6. Lake Nyos CO2 release – 50 m thick cloud of CO2, denser than air flowed down valleys a ...
... explosive and fatal 1. Lava 2. Pyroclastics - Fragments of rock and lava and ash 3. Nuee Ardente - dense mixture of hot gas and ash Mt. Pelee on Martinique – 60-90mph 4. Lahars - volcanic mudflow 5. Toxic Gases 6. Lake Nyos CO2 release – 50 m thick cloud of CO2, denser than air flowed down valleys a ...
Objective: Identify and describe the three kinds of volcanic cones
... Both active and inactive volcanoes can be found in many places around the world. They are also found in space. Jupiter’s moon Io is the first moon or body other than Earth on which scientists have seen active volcanoes. The volcanoes on Io are so powerful that they shoot out many metric tons of mate ...
... Both active and inactive volcanoes can be found in many places around the world. They are also found in space. Jupiter’s moon Io is the first moon or body other than Earth on which scientists have seen active volcanoes. The volcanoes on Io are so powerful that they shoot out many metric tons of mate ...
Ch. 7.2 Volcanic Eruptions
... Only a few hundred meters high at most; very steep sides. Result from explosive eruptions of solid fragments. ...
... Only a few hundred meters high at most; very steep sides. Result from explosive eruptions of solid fragments. ...
Volcanic Activity
... Glicken, a survivor of Mt. St. Helens • Site of volcano warning system 1991 - 43 scientists and journalists were killed by a three-mile-long pyroclastic flow, a fast-moving river of hot gas and rock that can speed along at speeds up to 450 miles per hour. ...
... Glicken, a survivor of Mt. St. Helens • Site of volcano warning system 1991 - 43 scientists and journalists were killed by a three-mile-long pyroclastic flow, a fast-moving river of hot gas and rock that can speed along at speeds up to 450 miles per hour. ...
Shasta/Lava Beds/Lassen
... Mt. Shasta • prominent landmark at an elevation of 4,317 meters (14,162 feet) • volume of nearly 500 cubic kilometers makes it the largest of the Cascade stratovolcanoes ...
... Mt. Shasta • prominent landmark at an elevation of 4,317 meters (14,162 feet) • volume of nearly 500 cubic kilometers makes it the largest of the Cascade stratovolcanoes ...
Volcano activity
... water and steam that erupts from the ground. – Forms due to rising hot water and steam that become trapped underground in a narrow crack. – Builds up pressure until it sprays out of the ground. ...
... water and steam that erupts from the ground. – Forms due to rising hot water and steam that become trapped underground in a narrow crack. – Builds up pressure until it sprays out of the ground. ...
powerpoint_Volcanoes Lava and Types of Eruptions
... water and steam that erupts from the ground. – Forms due to rising hot water and steam that become trapped underground in a narrow crack. – Builds up pressure until it sprays out of the ground. ...
... water and steam that erupts from the ground. – Forms due to rising hot water and steam that become trapped underground in a narrow crack. – Builds up pressure until it sprays out of the ground. ...
Mount St. Helens
Mount St. Helens or Louwala-Clough (known as Lawetlat'la to the indigenous Cowlitz people, and Loowit to the Klickitat) is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It is 96 miles (154 km) south of Seattle, Washington, and 50 miles (80 km) northeast of Portland, Oregon. Mount St. Helens takes its English name from the British diplomat Lord St Helens, a friend of explorer George Vancouver who made a survey of the area in the late 18th century. The volcano is located in the Cascade Range and is part of the Cascade Volcanic Arc, a segment of the Pacific Ring of Fire that includes over 160 active volcanoes. This volcano is well known for its ash explosions and pyroclastic flows.Mount St. Helens is most notorious for its catastrophic eruption on May 18, 1980, at 8:32 a.m. PDT, the deadliest and most economically destructive volcanic event in the history of the United States. Fifty-seven people were killed; 250 homes, 47 bridges, 15 miles (24 km) of railways, and 185 miles (298 km) of highway were destroyed. A massive debris avalanche triggered by an earthquake measuring 5.1 on the Richter scale caused an eruption that reduced the elevation of the mountain's summit from 9,677 ft (2,950 m) to 8,363 ft (2,549 m), replacing it with a 1 mile (1.6 km) wide horseshoe-shaped crater. The debris avalanche was up to 0.7 cubic miles (2.9 km3) in volume. The Mount St. Helens National Volcanic Monument was created to preserve the volcano and allow for its aftermath to be scientifically studied.As with most other volcanoes in the Cascade Range, Mount St. Helens is a large eruptive cone consisting of lava rock interlayered with ash, pumice, and other deposits. The mountain includes layers of basalt and andesite through which several domes of dacite lava have erupted. The largest of the dacite domes formed the previous summit, and off its northern flank sat the smaller Goat Rocks dome. Both were destroyed in the 1980 eruption.