to start the Powerpoint presentation
... Valley erosion can be extreme in places: Up to 20 m down-cutting during one typhoon! This mosaic shows the remains of the 1991 deposit (white unit) that has been cut by younger flash floods ...
... Valley erosion can be extreme in places: Up to 20 m down-cutting during one typhoon! This mosaic shows the remains of the 1991 deposit (white unit) that has been cut by younger flash floods ...
Slide 1
... Plutons- intrusive igneous rock bodies which are classified by shape, size, and their relationship to other surrounding rocks. -Batholiths-LARGEST plutons, irregularly shaped, coarsegrained igneous rocks. -Laccoliths-mushroom-shaped pluton with a round top and flat bottom. Relatively small -Sills-wh ...
... Plutons- intrusive igneous rock bodies which are classified by shape, size, and their relationship to other surrounding rocks. -Batholiths-LARGEST plutons, irregularly shaped, coarsegrained igneous rocks. -Laccoliths-mushroom-shaped pluton with a round top and flat bottom. Relatively small -Sills-wh ...
Ch 8 Volcanoes Test – Study Guide
... Know your vocabulary!!! Be ready to look at past chapter vocabulary too! a. b. c. d. e. f. ...
... Know your vocabulary!!! Be ready to look at past chapter vocabulary too! a. b. c. d. e. f. ...
Classifying Volcanoes
... a. Plate tectonics; colliding plates produce excess magma which rises to the surface, after coming to the surface it cools and hardens forming the sides of the volcano 2. Parts of a volcano (draw diagram into notebooks) a. Magma Chamber- area where magma pools and builds up pressure before being rel ...
... a. Plate tectonics; colliding plates produce excess magma which rises to the surface, after coming to the surface it cools and hardens forming the sides of the volcano 2. Parts of a volcano (draw diagram into notebooks) a. Magma Chamber- area where magma pools and builds up pressure before being rel ...
Volcanoes
... Volcanoes can be active dormant or extinct. Slieve Gullion is an extinct volcano! The erupsion in Pompeii in 79AD saw plumbs of gas and pumice spew from the volcano – knot lava. The ash and pumice fell up to 25 metres deep covering the town and preserving everything in perfect condition for 2000 yea ...
... Volcanoes can be active dormant or extinct. Slieve Gullion is an extinct volcano! The erupsion in Pompeii in 79AD saw plumbs of gas and pumice spew from the volcano – knot lava. The ash and pumice fell up to 25 metres deep covering the town and preserving everything in perfect condition for 2000 yea ...
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. ...
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. ...
Volcano Lecture ppt
... • Earthquake activity commonly precedes an eruption – Result of magma pushing up towards the surface – Increase volume of material in the volcano shatters the rock – This causes earthquakes ...
... • Earthquake activity commonly precedes an eruption – Result of magma pushing up towards the surface – Increase volume of material in the volcano shatters the rock – This causes earthquakes ...
QR-Volcanoes 59 points Using separate pieces of paper, answer
... 10. Sketch a volcano and identify its morphologic parts: crater, volcanic conduit, flanks, magma chamber, and caldera (assuming the volcano is dormant) 11. Extensive pyroclastic flow deposits are associated with which volcanic structure? 12. How to the eruptions that created the Columbia Plateau dif ...
... 10. Sketch a volcano and identify its morphologic parts: crater, volcanic conduit, flanks, magma chamber, and caldera (assuming the volcano is dormant) 11. Extensive pyroclastic flow deposits are associated with which volcanic structure? 12. How to the eruptions that created the Columbia Plateau dif ...
VolcanicHazards2
... Pyroclastic eruptions and flows produce some of most devastating effects associated with volcanism. Destruction is total to any living organism or structure within the pathway of a pyroclastic flow. ...
... Pyroclastic eruptions and flows produce some of most devastating effects associated with volcanism. Destruction is total to any living organism or structure within the pathway of a pyroclastic flow. ...
Volcano Vocabulary
... formed by quiet eruptions The molten mixture of rock forming substances, gases and water The expulsion of ash, cinders, bombs, and gases during an explosive volcanic eruption A slow- moving type of lava that hardens to form rough chunks A pool formed by groundwater that has risen to the surface afte ...
... formed by quiet eruptions The molten mixture of rock forming substances, gases and water The expulsion of ash, cinders, bombs, and gases during an explosive volcanic eruption A slow- moving type of lava that hardens to form rough chunks A pool formed by groundwater that has risen to the surface afte ...
Volcano Vocabulary
... formed by quiet eruptions The molten mixture of rock forming substances, gases and water The expulsion of ash, cinders, bombs, and gases during an explosive volcanic eruption A slow- moving type of lava that hardens to form rough chunks A pool formed by groundwater that has risen to the surface afte ...
... formed by quiet eruptions The molten mixture of rock forming substances, gases and water The expulsion of ash, cinders, bombs, and gases during an explosive volcanic eruption A slow- moving type of lava that hardens to form rough chunks A pool formed by groundwater that has risen to the surface afte ...
Section 9.1 How and where volcanoes form
... eruption of gases and pyroclastic material. Travels down hill at speeds over 100 kilometers per hour. ...
... eruption of gases and pyroclastic material. Travels down hill at speeds over 100 kilometers per hour. ...
Volcano: Fill in the blanks below using words from the word bank
... All of the materials from a volcano leave through an opening at the top of a chimney called a ___________. The ___________ rises through Chimneys in the volcano. They can be ______ ________ or the main chimney. Sometimes, a ______ ________ runs down from the top of the volcano. The largest _________ ...
... All of the materials from a volcano leave through an opening at the top of a chimney called a ___________. The ___________ rises through Chimneys in the volcano. They can be ______ ________ or the main chimney. Sometimes, a ______ ________ runs down from the top of the volcano. The largest _________ ...
Do All VolCAnoES ERupT In THE SAmE WAy?
... continued to erupt for the next six weeks, may flow a long way, but these volcanoes making it difficult to rescue the survivors. rarely explode violently. The eruption is estimated to have killed more than 3000 people. • Lava dome volcanoes can produce violent explosions, but the lava rarely flows ...
... continued to erupt for the next six weeks, may flow a long way, but these volcanoes making it difficult to rescue the survivors. rarely explode violently. The eruption is estimated to have killed more than 3000 people. • Lava dome volcanoes can produce violent explosions, but the lava rarely flows ...
Volcanism and Its Landforms - Cal State LA
... viscosity than others because of their composition – Higher viscosity magmas typically have higher silica content and produce explosive eruptions • Pyroclastics – solid fragments erupted from a volcano ...
... viscosity than others because of their composition – Higher viscosity magmas typically have higher silica content and produce explosive eruptions • Pyroclastics – solid fragments erupted from a volcano ...
Getting to Know: Effects of Volcanoes
... Volcanoes can also impact Earth’s atmosphere. When a large plume of ash enters the atmosphere, it can block sunlight from reaching Earth’s surface. This can cause global temperatures to drop and affect climate. Volcanic eruptions can also release carbon dioxide, which is a greenhouse gas. If too muc ...
... Volcanoes can also impact Earth’s atmosphere. When a large plume of ash enters the atmosphere, it can block sunlight from reaching Earth’s surface. This can cause global temperatures to drop and affect climate. Volcanic eruptions can also release carbon dioxide, which is a greenhouse gas. If too muc ...
Volcanoes
... Short in height (less than 300m) Made of tephra Violent eruptions from gas buildup Lava and gas shoot high in the air and cool to form volcano ...
... Short in height (less than 300m) Made of tephra Violent eruptions from gas buildup Lava and gas shoot high in the air and cool to form volcano ...
Volcano by jose angel garcia gomez and alejandro cuthy gomez
... • Volcanic activity is responsible for building up much of earths surface. lava from volcanoes cools and hardens into three types of mountains ...
... • Volcanic activity is responsible for building up much of earths surface. lava from volcanoes cools and hardens into three types of mountains ...
Chapter 9 - Volcanoes
... dangerous immediately but the enormous amounts of ash and gases ejected into the upper atmosphere can change the climate worldwide resulting in famine and disease. • Shield Cones - can be enormous but are usually built on layers of lava in non-explosive eruptions. • Cinder Cones – smaller and formed ...
... dangerous immediately but the enormous amounts of ash and gases ejected into the upper atmosphere can change the climate worldwide resulting in famine and disease. • Shield Cones - can be enormous but are usually built on layers of lava in non-explosive eruptions. • Cinder Cones – smaller and formed ...
The Ring of Fire - American Red Cross
... Why are so many of the world’s volcanoes found along the edges of the Pacific Ocean in a region called The Ring of Fire? Scientists have discovered that the surface of the Earth is made up of tectonic plates — gigantic slabs of rock that fit together like the pieces of a puzzle. Some of these slabs ...
... Why are so many of the world’s volcanoes found along the edges of the Pacific Ocean in a region called The Ring of Fire? Scientists have discovered that the surface of the Earth is made up of tectonic plates — gigantic slabs of rock that fit together like the pieces of a puzzle. Some of these slabs ...
PPT
... • Often found on the flanks of larger volcanoes or in continental rifts Cinder cone in Arizona Fountain eruption ...
... • Often found on the flanks of larger volcanoes or in continental rifts Cinder cone in Arizona Fountain eruption ...
Take a `Chance` on the volcano erupting
... • Any of the following (represented on the ‘Chance’ cards) may indicate that an eruption is imminent: • The ratios of the gases emitted from the volcano. An increase in the sulphur dioxide/carbon dioxide ratio is particularly significant; • Increases in the emission of steam and other gases at fumar ...
... • Any of the following (represented on the ‘Chance’ cards) may indicate that an eruption is imminent: • The ratios of the gases emitted from the volcano. An increase in the sulphur dioxide/carbon dioxide ratio is particularly significant; • Increases in the emission of steam and other gases at fumar ...
Nevado del Ruiz
The Nevado del Ruiz (Spanish pronunciation: [neβaðo ðel ˈrwis]), also known as La Mesa de Herveo (English: Mesa of Herveo (the nearby town)), or Kumanday in the language of the local pre-Columbian indigenous people, is a volcano located on the border of the departments of Caldas and Tolima in Colombia, about 129 kilometers (80 mi) west of the capital city Bogotá. It is a stratovolcano, composed of many layers of lava alternating with hardened volcanic ash and other pyroclastic rocks. Nevado del Ruiz has been active for about two million years, since the early Pleistocene or late Pliocene epoch, with three major eruptive periods. The current volcanic cone formed during the present eruptive period, which began 150 thousand years ago.The volcano usually generates Plinian eruptions, which produce swift-moving currents of hot gas and rock called pyroclastic flows. These eruptions often cause massive lahars (mud and debris flows), which pose a threat to human life and the environment. The impact of such an eruption is increased as the hot gas and lava melts the mountain's snowcap, adding large quantities of water to the flow. On November 13, 1985, a small eruption produced an enormous lahar that buried and destroyed the town of Armero in Tolima, causing an estimated 25,000 deaths. This event later became known as the Armero tragedy—the deadliest lahar in recorded history. Similar but less deadly incidents occurred in 1595 and 1845, consisting of a small explosive eruption followed by a large lahar.The volcano is part of Los Nevados National Natural Park, which also contains several other volcanoes. The summit of Nevado del Ruiz is covered by large glaciers, although these have retreated significantly since 1985 because of global warming. The volcano continues to pose a threat to the nearby towns and villages, and it is estimated that up to 500,000 people could be at risk from lahars from future eruptions.