34,000 years ago a river of molten lava flowed down this valley from
... shield and a central cone of scoria. The broad lower slopes form a "lava shield" built up from lava flows that ran outward from the central vent. One of these fed the Harman Valley flow. The steeper central peak was formed towards the end of the eruption by explosive activity that threw out a lot of ...
... shield and a central cone of scoria. The broad lower slopes form a "lava shield" built up from lava flows that ran outward from the central vent. One of these fed the Harman Valley flow. The steeper central peak was formed towards the end of the eruption by explosive activity that threw out a lot of ...
volcano jeopardy
... • A VOLCANO THAT’S BEEN KNOWN TO ERUPT WITHIN MODERN TIMES BUT IS NOW INACTIVE • DORMANT VOLCANO Return to board ...
... • A VOLCANO THAT’S BEEN KNOWN TO ERUPT WITHIN MODERN TIMES BUT IS NOW INACTIVE • DORMANT VOLCANO Return to board ...
Year 9: Global Hazards and the Restless Earth
... Can use a map to Can describe the Can describe the Can describe Can explain how Can compare and identify the basic structure of structure of a some volcanoes some volcanoes contrast the What are are formed by location of major a volcano. structure of volcano using the as active, vo ...
... Can use a map to Can describe the Can describe the Can describe Can explain how Can compare and identify the basic structure of structure of a some volcanoes some volcanoes contrast the What are are formed by location of major a volcano. structure of volcano using the as active, vo ...
Test 4/Homework 4 (Chapter 9 Volcanoes)
... Hot-Spots (Definition, location w/ regard to plate boundary) Most explosive volcanoes relation to plate boundaries Composite volcanoes (Definition, location w/ regard to plate boundary, type of lava) Temperature and chemical composition relation to volcanic eruption Correlate silica content (SiO2) ...
... Hot-Spots (Definition, location w/ regard to plate boundary) Most explosive volcanoes relation to plate boundaries Composite volcanoes (Definition, location w/ regard to plate boundary, type of lava) Temperature and chemical composition relation to volcanic eruption Correlate silica content (SiO2) ...
Chapter 7 - Florida Gateway College
... Hot-Spots (Definition, location w/ regard to plate boundary) Most explosive volcanoes relation to plate boundaries Composite volcanoes (Definition, location w/ regard to plate boundary, type of lava) Temperature and chemical composition relation to volcanic eruption Correlate silica content (SiO2) ...
... Hot-Spots (Definition, location w/ regard to plate boundary) Most explosive volcanoes relation to plate boundaries Composite volcanoes (Definition, location w/ regard to plate boundary, type of lava) Temperature and chemical composition relation to volcanic eruption Correlate silica content (SiO2) ...
Study Guide: Earthquakes and Volcanoes
... How to determine the epicenter of an earthquake The relationship between plate tectonics and earthquake activity What happens to the surface when a fault ruptures How earthquakes are a constructive and/or destructive force ...
... How to determine the epicenter of an earthquake The relationship between plate tectonics and earthquake activity What happens to the surface when a fault ruptures How earthquakes are a constructive and/or destructive force ...
PDF 115KB
... a historic examination of iceland’s volcanic activity indicates the frequency of eruptions is at 20-25 per century (langmann et al. 2011). among iceland’s volcanoes, Katla is one of the most dangerous. historically, an eruption in Katla has followed within a few years of eyjafjallajökull. her erupti ...
... a historic examination of iceland’s volcanic activity indicates the frequency of eruptions is at 20-25 per century (langmann et al. 2011). among iceland’s volcanoes, Katla is one of the most dangerous. historically, an eruption in Katla has followed within a few years of eyjafjallajökull. her erupti ...
All About Volcanoes - Library Video Company
... as fine as sand and others the size of houses, fly into the sky. This type of volcano usually forms cone-shaped mountains from layers of ash and cinders. Composite volcanoes are formed as layers of cinder and hardened lava build up over time, creating a volcanic mountain with steep, even sides.All t ...
... as fine as sand and others the size of houses, fly into the sky. This type of volcano usually forms cone-shaped mountains from layers of ash and cinders. Composite volcanoes are formed as layers of cinder and hardened lava build up over time, creating a volcanic mountain with steep, even sides.All t ...
Developing a Clincher Sentence
... easily. Some of the material melts and then floats closer to the earth’s surface. When the melted material (called magma) reaches the surface, it may seep out quietly, or it may spew forth in a violent explosion. Clincher sentence: _____ 3. Geologists are not the only scientists who study volcanoes. ...
... easily. Some of the material melts and then floats closer to the earth’s surface. When the melted material (called magma) reaches the surface, it may seep out quietly, or it may spew forth in a violent explosion. Clincher sentence: _____ 3. Geologists are not the only scientists who study volcanoes. ...
http://kids - wikifuller
... 28. What is the magma’s viscosity or thickness and indication of???? 29. What do thick magma’s tend to have more of???? 30. Runny, fluid lavas tend to have low levels of what??? 31. Set the both levels of viscosity and gas to low. DO NOT click on “set conditions”. You just created a shield type erup ...
... 28. What is the magma’s viscosity or thickness and indication of???? 29. What do thick magma’s tend to have more of???? 30. Runny, fluid lavas tend to have low levels of what??? 31. Set the both levels of viscosity and gas to low. DO NOT click on “set conditions”. You just created a shield type erup ...
Chapter 13 Section 2
... Volcanic Eruptions Types of Magma/Lava • Mafic - describes magma or igneous rock that is rich in magnesium and iron and that is generally dark in color • Felsic - describes magma or igneous rock that is rich in feldspar and silica and that is generally light in color • Mafic rock commonly makes up t ...
... Volcanic Eruptions Types of Magma/Lava • Mafic - describes magma or igneous rock that is rich in magnesium and iron and that is generally dark in color • Felsic - describes magma or igneous rock that is rich in feldspar and silica and that is generally light in color • Mafic rock commonly makes up t ...
Science Education Reform - American Geosciences Institute
... Understand that volcanoes go through changes that can be monitored prior to an eruption. ...
... Understand that volcanoes go through changes that can be monitored prior to an eruption. ...
Tick, Tick, Boom Danger Zone
... explosion in 1815 caused both it created a 5-meter high tsunami, ash fall, disease, and global cooling, which resulted in 1816 “year without a summer”. Mt. Vesuvius explosion in 79 A.D buried the entire nearby city of Pompeii and killed thousands of people. When a volcano erupts it lets out a world ...
... explosion in 1815 caused both it created a 5-meter high tsunami, ash fall, disease, and global cooling, which resulted in 1816 “year without a summer”. Mt. Vesuvius explosion in 79 A.D buried the entire nearby city of Pompeii and killed thousands of people. When a volcano erupts it lets out a world ...
The World of Volcanoes
... • Volcanoes can create landslides that bury land, homes and sometimes people. ...
... • Volcanoes can create landslides that bury land, homes and sometimes people. ...
INA PIT CRATER ON THE MOON: EXTRUSION OF WANING
... About 50% of the interior terrain is made up of the unusual bleb-like mounds with the remainder composed of two floor units: 1) a hummocky unit (44%), composed of relatively optically immature terrain with ridged and pitted textures, and 2) an optically immature blocky unit (6%) with a rougher textu ...
... About 50% of the interior terrain is made up of the unusual bleb-like mounds with the remainder composed of two floor units: 1) a hummocky unit (44%), composed of relatively optically immature terrain with ridged and pitted textures, and 2) an optically immature blocky unit (6%) with a rougher textu ...
Volcanic Terms - Hamilton Field Naturalists Club
... Hot-spot: A pool of molten magma in the upper mantle. The term is mainly used where a continental crust is drifting across a stationary hot spot, which periodically erupts to form a chain of volcanoes with progressively younger ages. Examples of such chains occur in Queensland and NSW, but there is ...
... Hot-spot: A pool of molten magma in the upper mantle. The term is mainly used where a continental crust is drifting across a stationary hot spot, which periodically erupts to form a chain of volcanoes with progressively younger ages. Examples of such chains occur in Queensland and NSW, but there is ...
These mountains are formed by compression Fault structures is a
... •Strombolian-moderate eruptions , small explosions and lava of average viscosity. •Vesuvian-very explosive after a dormant period with ash/gas clouds and gas-filled lava. ...
... •Strombolian-moderate eruptions , small explosions and lava of average viscosity. •Vesuvian-very explosive after a dormant period with ash/gas clouds and gas-filled lava. ...
Volcano Research Project
... What type of lava forms your volcano? What type of eruption does it produce: Violent, quiet, or both? What types of volcanic rock fragments or lava come out of your volcano? ________________________________________________________________________________________________ _____________________________ ...
... What type of lava forms your volcano? What type of eruption does it produce: Violent, quiet, or both? What types of volcanic rock fragments or lava come out of your volcano? ________________________________________________________________________________________________ _____________________________ ...
Volcanic Eruptions - Elliott County Schools
... called volcanic dust. • Large pyroclastic particles that are less than 64 mm in diameter are called lapilli. ...
... called volcanic dust. • Large pyroclastic particles that are less than 64 mm in diameter are called lapilli. ...
Volacano - OnCourse
... • When magma is forced up onto Earth’s surface, it becomes lava that hardens into rock. ...
... • When magma is forced up onto Earth’s surface, it becomes lava that hardens into rock. ...
6th_Plate_Tectonics
... as well as hot gases. In some eruptions, ash and lava are buoyied by hot vapors and pour down the slopes of a volcano very rapidly, with speeds up to 100 miles per hour. This special type of eruption destroyed the city of St. Pierre in 1902. In other cases hot material from the volcano can melt snow ...
... as well as hot gases. In some eruptions, ash and lava are buoyied by hot vapors and pour down the slopes of a volcano very rapidly, with speeds up to 100 miles per hour. This special type of eruption destroyed the city of St. Pierre in 1902. In other cases hot material from the volcano can melt snow ...
Earth Science UbD – 9th Grade – Volcanoes: November
... Create pie graphs of several volcanic rocks that show their chemical composition, then use the graphs to determine the type of lava from which they were produced. Given physical characteristics, correctly place various volcanoes in the right ...
... Create pie graphs of several volcanic rocks that show their chemical composition, then use the graphs to determine the type of lava from which they were produced. Given physical characteristics, correctly place various volcanoes in the right ...
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.