Chapter 1 Review answers
... The high areas, low spots, and flat regions together are called the topography of Earth’s surface. Magma-molten rock found below earth’s crust, which can give rise to igneous rocks. Lava- magma that has flowed over Earth’s surface. vent- an opening in the crust through which volcanic material flows. ...
... The high areas, low spots, and flat regions together are called the topography of Earth’s surface. Magma-molten rock found below earth’s crust, which can give rise to igneous rocks. Lava- magma that has flowed over Earth’s surface. vent- an opening in the crust through which volcanic material flows. ...
Chapter 13 Section 1
... • As the oceanic plate sinks into the asthenosphere, fluids such as water from the subducting plate combine with crust and mantle material. • These fluids decrease the melting point of the rock and cause the rock to melt and form magma. Some of the magma breaks through the overriding plate to Earth’ ...
... • As the oceanic plate sinks into the asthenosphere, fluids such as water from the subducting plate combine with crust and mantle material. • These fluids decrease the melting point of the rock and cause the rock to melt and form magma. Some of the magma breaks through the overriding plate to Earth’ ...
Chapter 12 Vocabulary and Study Guide Volcanoes 1) acid rain
... and core that forms volcanoes when melted rock is forced upwards and breaks through the crust. Mantle plumes are these areas of hot, upwelling mantle. A hot spot develops above the mantle plume. Hotspots may be far from tectonic plate boundaries. A volcanic hotspot is where lava pushes up from under ...
... and core that forms volcanoes when melted rock is forced upwards and breaks through the crust. Mantle plumes are these areas of hot, upwelling mantle. A hot spot develops above the mantle plume. Hotspots may be far from tectonic plate boundaries. A volcanic hotspot is where lava pushes up from under ...
crust, mantle, outer core, inner core
... Earthquake waves are called ( fault, epicenter, seismic waves) ...
... Earthquake waves are called ( fault, epicenter, seismic waves) ...
platetectonics-1232003374497953-1 - RCPL
... one of the largest explosions on Earth in recorded time (VEI=6) and destroyed much of Krakatau island. ...
... one of the largest explosions on Earth in recorded time (VEI=6) and destroyed much of Krakatau island. ...
Natural Disasters
... walls of water can cause widespread destruction when they crash ashore. These awe-inspiring waves are typically caused by large, undersea earthquakes at tectonic plate boundaries. When the ocean floor at a plate boundary rises or falls suddenly it displaces the water above it and launches the rollin ...
... walls of water can cause widespread destruction when they crash ashore. These awe-inspiring waves are typically caused by large, undersea earthquakes at tectonic plate boundaries. When the ocean floor at a plate boundary rises or falls suddenly it displaces the water above it and launches the rollin ...
Unit 5 Test Plate Tectonics
... ____ 28. What was the main reason Wegener’s continental drift hypothesis was rejected? a. He was not well liked by other scientists. b. He could not provide a mechanism for the movement of the continents. c. He could provide only illogical explanations for the movement of the continents. d. His evi ...
... ____ 28. What was the main reason Wegener’s continental drift hypothesis was rejected? a. He was not well liked by other scientists. b. He could not provide a mechanism for the movement of the continents. c. He could provide only illogical explanations for the movement of the continents. d. His evi ...
Ensy 12 – Unit: Natural Disasters
... 8. The Earth is made of three layers; the Crust, the Mantle and the Core. 9. The Earth’s crust is made up of huge slabs called plates. When two plates collide, one section slides on top the other with the one beneath being pushed down, thus squeezing the magma up between the two plates. 10. Volcanic ...
... 8. The Earth is made of three layers; the Crust, the Mantle and the Core. 9. The Earth’s crust is made up of huge slabs called plates. When two plates collide, one section slides on top the other with the one beneath being pushed down, thus squeezing the magma up between the two plates. 10. Volcanic ...
The modern picture of plate tectonics
... getting bigger, then crust must also be destroyed. . . • Oceanic crust is destroyed at subduction zones, where one plate sinks under another. • Subduction zones are marked by trenches and by island arcs. • Examples: Aleutians, Philippines, Japan, Indonesia. (NOT Hawaii!!) ...
... getting bigger, then crust must also be destroyed. . . • Oceanic crust is destroyed at subduction zones, where one plate sinks under another. • Subduction zones are marked by trenches and by island arcs. • Examples: Aleutians, Philippines, Japan, Indonesia. (NOT Hawaii!!) ...
Mid-Term Exam Study Guide
... the mantle bringing hot solid rock upward to the hot spot. • Because of lower pressure in the upper region of the mantle the rock begins to melt. This forms magma which rises inch by inch until it reaches the surface forming a volcano. ...
... the mantle bringing hot solid rock upward to the hot spot. • Because of lower pressure in the upper region of the mantle the rock begins to melt. This forms magma which rises inch by inch until it reaches the surface forming a volcano. ...
divergent boundaries - Thomas C. Cario Middle School
... the Andes in South America and the Cascade Range in northwestern USA. ...
... the Andes in South America and the Cascade Range in northwestern USA. ...
- ILM.COM.PK
... The viscosity of magma is directly related to its silica content. Generally, the higher the silica content the higher the viscosity. Because of the silica content, rhyolitic lavas are very viscous and don’t flow easily. Basaltic lavas, which contain less silica, tend to ...
... The viscosity of magma is directly related to its silica content. Generally, the higher the silica content the higher the viscosity. Because of the silica content, rhyolitic lavas are very viscous and don’t flow easily. Basaltic lavas, which contain less silica, tend to ...
10.1 Volcanoes and Plate Tectonics Lecture Outline Origin of
... Called Volcanic Island Arcs. Ring of Fire is the long belt of volcanoes that circles the Pacific Ocean. Volcanism may also occur at convergent plate boundaries where the continental plate meets an oceanic plate. Result the oceanic plate is subducted under the continental lithosphere. This forms a Co ...
... Called Volcanic Island Arcs. Ring of Fire is the long belt of volcanoes that circles the Pacific Ocean. Volcanism may also occur at convergent plate boundaries where the continental plate meets an oceanic plate. Result the oceanic plate is subducted under the continental lithosphere. This forms a Co ...
Supervolcanoes - WordPress.com
... 2.1 million years ago. This was the first of the supervolcanic eruptions to occur at Yellowstone since it drifted over the hot spot. A second supervolcanic eruption occured 1.3 million years ago and the most recent occured 640,000 years ago. The cycle of 600-700,000 years means that another supervol ...
... 2.1 million years ago. This was the first of the supervolcanic eruptions to occur at Yellowstone since it drifted over the hot spot. A second supervolcanic eruption occured 1.3 million years ago and the most recent occured 640,000 years ago. The cycle of 600-700,000 years means that another supervol ...
Use of Remote Sensing and GIS in Volcanic Eruption
... USA, 1980, May 18) Mount St. Helens had been dormant for 123 years when it suddenly erupted at 8:32 a.m. Ash-filled steam and gas blasted out horizontally from the mountain at up to 670 miles per hour, snapping off six million trees and scattering them like toothpicks over a 130,000-acre area. The e ...
... USA, 1980, May 18) Mount St. Helens had been dormant for 123 years when it suddenly erupted at 8:32 a.m. Ash-filled steam and gas blasted out horizontally from the mountain at up to 670 miles per hour, snapping off six million trees and scattering them like toothpicks over a 130,000-acre area. The e ...
GY 111 Lecture Note Series Extrusive Igneous Rocks
... rock composed of variously sized particles (some are up to several metres in size). The rock is called ignimbrite and I have seen some in New Zealand and New Mexico that are 3 or 4 m thick. I can’t image the forces responsible for these pyroclastic flows, but I bet they would scare (and burn) the pa ...
... rock composed of variously sized particles (some are up to several metres in size). The rock is called ignimbrite and I have seen some in New Zealand and New Mexico that are 3 or 4 m thick. I can’t image the forces responsible for these pyroclastic flows, but I bet they would scare (and burn) the pa ...
volcano notes
... Sediment- small pieces of rock or fossils that have been broken down by erosion or weathering ...
... Sediment- small pieces of rock or fossils that have been broken down by erosion or weathering ...
Slide 1
... THE SAME KINDS OF FOSSILS WERE FOUND ON THE EAST COAST OF SOUTH AMERICA AND THE WEST COAST OF AFRICA. THE SAME KINDS OF ROCKS WERE FOUND IN NORTH AMERICA AND EUROPE. ...
... THE SAME KINDS OF FOSSILS WERE FOUND ON THE EAST COAST OF SOUTH AMERICA AND THE WEST COAST OF AFRICA. THE SAME KINDS OF ROCKS WERE FOUND IN NORTH AMERICA AND EUROPE. ...
Lecture 7 Plates and Plumes September 27th
... transform fault linking the East Pacific Rise with the Gorda and Juan de Fuca Ridges. Actually an inter-connecting fault system. The west side is moving north relative to the east side. Cause of numerous large shallow earthquakes. ...
... transform fault linking the East Pacific Rise with the Gorda and Juan de Fuca Ridges. Actually an inter-connecting fault system. The west side is moving north relative to the east side. Cause of numerous large shallow earthquakes. ...
Modelessayplatetectheory 18.46KB 2017-03-29
... Throughout human history we have always wondered about the reasons for volcanic and seismic events, but it wasn’t until geologist Alfred Wegener’s theory of continental drift that anyone seriously considered a geological rather than theological cause. Wegener based his theory primarily on the contin ...
... Throughout human history we have always wondered about the reasons for volcanic and seismic events, but it wasn’t until geologist Alfred Wegener’s theory of continental drift that anyone seriously considered a geological rather than theological cause. Wegener based his theory primarily on the contin ...
Plate Tectonics, Earthquakes, and Volcanoes Study Guide
... 34.Geologists know that wherever plate movement stores energy in the rock along faults___ ...
... 34.Geologists know that wherever plate movement stores energy in the rock along faults___ ...
Press Release
... The Icelandic volcanic eruptions of Eyjafallajokull and Bardabunga have produced impressive images of the volcanic activity on the island in recent years. As Iceland is part of the Mid-Atlantic Ridge these eruptions also strikingly demonstrate how new material for the Earth’s crust is permanently pr ...
... The Icelandic volcanic eruptions of Eyjafallajokull and Bardabunga have produced impressive images of the volcanic activity on the island in recent years. As Iceland is part of the Mid-Atlantic Ridge these eruptions also strikingly demonstrate how new material for the Earth’s crust is permanently pr ...
Year 9: Volcanoes and Earthquakes
... The innermost layer of the Earth (6380 km down). It is very hot (5500˚C) and made up of solid iron, because of this the inner core has the heaviest material in the Earth. The inner core is still solid despite the heat because of the pressure of the rest of the Earth around it. ...
... The innermost layer of the Earth (6380 km down). It is very hot (5500˚C) and made up of solid iron, because of this the inner core has the heaviest material in the Earth. The inner core is still solid despite the heat because of the pressure of the rest of the Earth around it. ...
Ring of Fire
The Ring of Fire is an area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. In a 40,000 km (25,000 mi) horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements. It has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes. The Ring of Fire is sometimes called the circum-Pacific belt.About 90% of the world's earthquakes and 81% of the world's largest earthquakes occur along the Ring of Fire. The next most seismically active region (5–6% of earthquakes and 17% of the world's largest earthquakes) is the Alpide belt, which extends from Java to the northern Atlantic Ocean via the Himalayas and southern Europe.All but 3 of the world's 25 largest volcanic eruptions of the last 11,700 years occurred at volcanoes in the Ring of Fire.The Ring of Fire is a direct result of plate tectonics and the movement and collisions of lithospheric plates. The eastern section of the ring is the result of the Nazca Plate and the Cocos Plate being subducted beneath the westward moving South American Plate. The Cocos Plate is being subducted beneath the Caribbean Plate, in Central America. A portion of the Pacific Plate along with the small Juan de Fuca Plate are being subducted beneath the North American Plate. Along the northern portion, the northwestward-moving Pacific plate is being subducted beneath the Aleutian Islands arc. Farther west, the Pacific plate is being subducted along the Kamchatka Peninsula arcs on south past Japan. The southern portion is more complex, with a number of smaller tectonic plates in collision with the Pacific plate from the Mariana Islands, the Philippines, Bougainville, Tonga, and New Zealand; this portion excludes Australia, since it lies in the center of its tectonic plate. Indonesia lies between the Ring of Fire along the northeastern islands adjacent to and including New Guinea and the Alpide belt along the south and west from Sumatra, Java, Bali, Flores, and Timor. The famous and very active San Andreas Fault zone of California is a transform fault which offsets a portion of the East Pacific Rise under southwestern United States and Mexico. The motion of the fault generates numerous small earthquakes, at multiple times a day, most of which are too small to be felt. The active Queen Charlotte Fault on the west coast of the Haida Gwaii, British Columbia, Canada, has generated three large earthquakes during the 20th century: a magnitude 7 event in 1929; a magnitude 8.1 in 1949 (Canada's largest recorded earthquake); and a magnitude 7.4 in 1970.