Hazards Chapter 3a
... destruction machines that we often make them out to be: (1) volcanoes frequently give us warning of their actions (2) many volcanoes are located in rural uninhabited places (3) if the eruption produces lava flows rather than poisonous gas or flaming particulates, it is more possible to evacuate and ...
... destruction machines that we often make them out to be: (1) volcanoes frequently give us warning of their actions (2) many volcanoes are located in rural uninhabited places (3) if the eruption produces lava flows rather than poisonous gas or flaming particulates, it is more possible to evacuate and ...
![volcano_powerpoint_semi_final[1]](http://s1.studyres.com/store/data/008391810_1-82225bd21215d0f1bbc6c0c61491a93b-300x300.png)
volcano_powerpoint_semi_final[1]
... • Shield volcanoes are formed from the action of the gas or steam or water vapor with heat from the earth’s core. This melts rock turning it into magma. The pressure from the heat of the gas pushes the magma up until it explodes. Molten Magma shoots upward from under the ocean floor and breaks throu ...
... • Shield volcanoes are formed from the action of the gas or steam or water vapor with heat from the earth’s core. This melts rock turning it into magma. The pressure from the heat of the gas pushes the magma up until it explodes. Molten Magma shoots upward from under the ocean floor and breaks throu ...
187 ― PPE For Volcanic Ash Exposures
... Examples include the volcanoes in the area known as the Pacific Ring of Fire which encircles the Pacific Ocean basin. They also may form where thin spots occur in the earth’s crust such as under Yellowstone National Park in the United States or under Iceland. Most of the world’s volcanoes are consid ...
... Examples include the volcanoes in the area known as the Pacific Ring of Fire which encircles the Pacific Ocean basin. They also may form where thin spots occur in the earth’s crust such as under Yellowstone National Park in the United States or under Iceland. Most of the world’s volcanoes are consid ...
volcanic activity guided notes
... If magma is __________ and __________, a volcano will erupt explosively. The explosion will break the lava into ___________ that quickly cool and harden into pieces of different size called ___________. Smallest pieces are called _________ (fine, rocky particles as small as a grain of sand), _ ...
... If magma is __________ and __________, a volcano will erupt explosively. The explosion will break the lava into ___________ that quickly cool and harden into pieces of different size called ___________. Smallest pieces are called _________ (fine, rocky particles as small as a grain of sand), _ ...
Section 1 - kjpederson
... 3. compound: a substance in which two or more elements are chemically joined 4. element: a substance in which all the atoms are the same that cannot be broken down into other substances 5. pahoehoe: a hot, fast-moving type of lava that hardens to form smooth, ropelike coils 6. physical property: any ...
... 3. compound: a substance in which two or more elements are chemically joined 4. element: a substance in which all the atoms are the same that cannot be broken down into other substances 5. pahoehoe: a hot, fast-moving type of lava that hardens to form smooth, ropelike coils 6. physical property: any ...
Presentation
... •Crater: funnel-shaped pit or depression at top of volcano •Caldera:craters whose walls have collapsed ...
... •Crater: funnel-shaped pit or depression at top of volcano •Caldera:craters whose walls have collapsed ...
VOLCANIC ERUPTIONS
... • Pipe- A long tube in the ground that connects the magma chamber to Earth’s surface. ...
... • Pipe- A long tube in the ground that connects the magma chamber to Earth’s surface. ...
PDF version
... in Kīlauea’s East Rift Zone. The area of the flow as mapped on July 18, 2014 is shown in pink, while widening of the flow as of July 29, 2014 is shown in red. Older lava flows are distinguished by color: 1983–1986 are shown in gray; ...
... in Kīlauea’s East Rift Zone. The area of the flow as mapped on July 18, 2014 is shown in pink, while widening of the flow as of July 29, 2014 is shown in red. Older lava flows are distinguished by color: 1983–1986 are shown in gray; ...
The Rock cycle: Initially proposed by James Hutton
... The Rock cycle was initially proposed by James Hutton Rocks are grouped into three main families based on their origin 1. Igneous 2. Sedimentary 3. Metamorphic. 1. IGNEOUS ROCKS: ...
... The Rock cycle was initially proposed by James Hutton Rocks are grouped into three main families based on their origin 1. Igneous 2. Sedimentary 3. Metamorphic. 1. IGNEOUS ROCKS: ...
Volcanic hazards and Some surprising impacts on human
... Plymouth, capital of Montserrat, destroyed in 1997 by pyroclastic flows from the Soufrière Hills volcano. The eruption killed 19 people, including some who had been let back into the city after it was first evacuated in 1995. More about lahars: From Best Volcano Photos : http://news.nationalgeograph ...
... Plymouth, capital of Montserrat, destroyed in 1997 by pyroclastic flows from the Soufrière Hills volcano. The eruption killed 19 people, including some who had been let back into the city after it was first evacuated in 1995. More about lahars: From Best Volcano Photos : http://news.nationalgeograph ...
to start the Powerpoint presentation
... Summit caldera of Mt. Pinatubo, Nov. 1999. The low-point in the rim is a future hazard as the lake will eventually over-top here. ...
... Summit caldera of Mt. Pinatubo, Nov. 1999. The low-point in the rim is a future hazard as the lake will eventually over-top here. ...
Effects of Volcanic Eruptions
... II. Different Types of Volcanoes F. Composite volcanoes are formed from explosive eruptions of pyroclastic material, followed by quieter flows of lava. These formations, among the most common types of volcanoes, have broad bases and sides that get steeper toward the top. ...
... II. Different Types of Volcanoes F. Composite volcanoes are formed from explosive eruptions of pyroclastic material, followed by quieter flows of lava. These formations, among the most common types of volcanoes, have broad bases and sides that get steeper toward the top. ...
Chapter 8 Section 3
... When volcanic rocks break down, they form soils that contain many nutrients that plants can use. ...
... When volcanic rocks break down, they form soils that contain many nutrients that plants can use. ...
RNDr. Aleš Špičák, CSc. - Sopečná činnost
... Like all hot spots, the Hawaiian plume originates deep within Earth's mantle. The plume remains stationary while the Pacific Plate above it moves northwest. Like a giant conveyor belt, the plate carries older volcanoes away from the hot spot. This hot spot is currently feeding two volcanoes on Hawai ...
... Like all hot spots, the Hawaiian plume originates deep within Earth's mantle. The plume remains stationary while the Pacific Plate above it moves northwest. Like a giant conveyor belt, the plate carries older volcanoes away from the hot spot. This hot spot is currently feeding two volcanoes on Hawai ...
Warm up question What hypothesis is Alfred Wegener known for
... ash – materials less than 2mm; worldwide Volcanic dust – materials less than 0.25mm; same Lapilli – materials less than 64mm – fall near vent Volcanic bombs – red hot lava that cools in the air Volcanic blocks – solid rock blasted from the fissure, can be as big as a house ...
... ash – materials less than 2mm; worldwide Volcanic dust – materials less than 0.25mm; same Lapilli – materials less than 64mm – fall near vent Volcanic bombs – red hot lava that cools in the air Volcanic blocks – solid rock blasted from the fissure, can be as big as a house ...
Volcanic Processes and Igneous Rocks
... Lava Tube – Underground pipe-like structures that carry lava far from vent. Stratovolcano Plume – Huge amounts of pressure cause the eruption to throw ash several miles into atmosphere Stratovolcano Pyroclastic Flow – A mass of very hot gas and rock that rush down the sides of a volcano ...
... Lava Tube – Underground pipe-like structures that carry lava far from vent. Stratovolcano Plume – Huge amounts of pressure cause the eruption to throw ash several miles into atmosphere Stratovolcano Pyroclastic Flow – A mass of very hot gas and rock that rush down the sides of a volcano ...
Volcanoes and Other Igneous Activity
... Composite cone or stratovolcano – Alternating andesitic lava flows and layers of explosively ejected pyroclastics. – Intermediate magma = viscous lava that is difficult to erupt. – Explosive eruptions due to buildup of gases. – Often produce nuée ardente – May produce a lahar - volcanic mudflow ...
... Composite cone or stratovolcano – Alternating andesitic lava flows and layers of explosively ejected pyroclastics. – Intermediate magma = viscous lava that is difficult to erupt. – Explosive eruptions due to buildup of gases. – Often produce nuée ardente – May produce a lahar - volcanic mudflow ...
Did a Massive Volcano Cause Massive Extinction?!
... • Short lifespans (usually only erupt once). • Usually pretty small • Hot spot or subduction? ...
... • Short lifespans (usually only erupt once). • Usually pretty small • Hot spot or subduction? ...
Volcanoes PPT - Van Buren Public Schools
... – A vent is an opening in the surface of Earth through which molten rock and gases are released. – Provide the force to extrude lava – Violence of an eruption is related to how easily gases escape from magma – Gases escape easily from fluid magma. – Viscous magma produces a more violent ...
... – A vent is an opening in the surface of Earth through which molten rock and gases are released. – Provide the force to extrude lava – Violence of an eruption is related to how easily gases escape from magma – Gases escape easily from fluid magma. – Viscous magma produces a more violent ...
Directed Reading
... b. the distance from the top of the volcano to its base. c. the viscosity of magma. d. the geologic age of the volcano. ...
... b. the distance from the top of the volcano to its base. c. the viscosity of magma. d. the geologic age of the volcano. ...
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.