10.1 Volcanoes and Plate Tectonics Lecture Outline Origin of
... Increasing pressure raises the melting point of rock deep beneath the surface. Decreasing pressure lowers rock’s melting point. When pressure drops enough, decompression melting occurs. This process takes place as hot yet solid mantle rock rises because it is less dense than the surrounding rock. As ...
... Increasing pressure raises the melting point of rock deep beneath the surface. Decreasing pressure lowers rock’s melting point. When pressure drops enough, decompression melting occurs. This process takes place as hot yet solid mantle rock rises because it is less dense than the surrounding rock. As ...
Plate Tectonics and Igneous Activity
... The basic connection between plate tectonics and volcanism is that plate motions provide the mechanisms by which mantle rocks melt to generate magma When an oceanic plate sinks under another plate, it brings water and rock along with it. When that plate reaches a depth of ~100-150 km, and melting ...
... The basic connection between plate tectonics and volcanism is that plate motions provide the mechanisms by which mantle rocks melt to generate magma When an oceanic plate sinks under another plate, it brings water and rock along with it. When that plate reaches a depth of ~100-150 km, and melting ...
PLATE TECTONICS He thought that continents were an only piece
... He thought that continents were an only piece of land but then they were separated, because he didn’t prove why continents were separated. They were Arthur Holmes and Harry Hess. Their evidence ...
... He thought that continents were an only piece of land but then they were separated, because he didn’t prove why continents were separated. They were Arthur Holmes and Harry Hess. Their evidence ...
types of plate boundaries 2014-2015
... • Two oceanic slabs converge and the more dense one descends beneath the other. • This kind of boundary often forms volcanoes on the ocean floor. • Volcanic island arcs form as volcanoes emerge from the sea. ...
... • Two oceanic slabs converge and the more dense one descends beneath the other. • This kind of boundary often forms volcanoes on the ocean floor. • Volcanic island arcs form as volcanoes emerge from the sea. ...
Continental Drift Theory
... Continental Drift Theory • First proposed by Alfred Wegener in 1912: – 250 million years ago, all of the continents were combined into one super-continent called “Pangaea” – The continents gradually drifted apart to where they are today ...
... Continental Drift Theory • First proposed by Alfred Wegener in 1912: – 250 million years ago, all of the continents were combined into one super-continent called “Pangaea” – The continents gradually drifted apart to where they are today ...
Earth Layers and Continental Drift
... 2. Indirect evidence from seismic waves (produced by earthquakes; speed gives clues to the material) ...
... 2. Indirect evidence from seismic waves (produced by earthquakes; speed gives clues to the material) ...
chap2 - LaffertysBiologyClass
... • Heavier materials settled deep in the Earth • Lighter components formed a thin crust • Eventually, the Earth’s oceans and atmosphere began to form • Earth’s location relative to the sun allows for water to stay liquid – an essential element to sustain life ...
... • Heavier materials settled deep in the Earth • Lighter components formed a thin crust • Eventually, the Earth’s oceans and atmosphere began to form • Earth’s location relative to the sun allows for water to stay liquid – an essential element to sustain life ...
(f) evaluate the role of plate tectonics with respect to long
... At times during Earth's long history, the configuration of the continents and seafloor have changed due to plate tectonics. This affects global sea level by determining the depths of the ocean basins. The depth of the ocean basins is all about the age of oceanic lithosphere: as lithosphere becomes o ...
... At times during Earth's long history, the configuration of the continents and seafloor have changed due to plate tectonics. This affects global sea level by determining the depths of the ocean basins. The depth of the ocean basins is all about the age of oceanic lithosphere: as lithosphere becomes o ...
11.1 OCEAN BASINS - STUDENT NOTES
... __________________ are the pieces of oceanic crust between a spreading mid-ocean ridge and the trench it disappears into. These make up _________of the Atlantic sea floor, and _________ of the Pacific seafloor. Abyssal plains can be covered in__________________________________. _____________ ...
... __________________ are the pieces of oceanic crust between a spreading mid-ocean ridge and the trench it disappears into. These make up _________of the Atlantic sea floor, and _________ of the Pacific seafloor. Abyssal plains can be covered in__________________________________. _____________ ...
Plate Tectonics and the changing earth ppt
... mountain, glaciers protect the mountain top and sides from erosion. As glaciers move, they push about great amounts of debris. When continents are glaciated, they ride Tectonics dictates latitude and “lower” in the asthenosphere altitude of places on Earth. because of increased mass. ...
... mountain, glaciers protect the mountain top and sides from erosion. As glaciers move, they push about great amounts of debris. When continents are glaciated, they ride Tectonics dictates latitude and “lower” in the asthenosphere altitude of places on Earth. because of increased mass. ...
Chapter 1, Changes to Earth`s Surface
... Crust – other layer of Earth, made of rock Mantle – layer of rock beneath Earth’s crust Core – center layer of Earth Plates – rigid blocks of crust and upper mantle rock Magma – molten rock from Earth’s mantle Volcano – mountain formed by lava and ash Earthquake – shaking of the ground caused by the ...
... Crust – other layer of Earth, made of rock Mantle – layer of rock beneath Earth’s crust Core – center layer of Earth Plates – rigid blocks of crust and upper mantle rock Magma – molten rock from Earth’s mantle Volcano – mountain formed by lava and ash Earthquake – shaking of the ground caused by the ...
chapter in perspective
... rugged oceanic ridges, fl at abyssal plains, occasional deep trenches, and curving chains of volcanic islands. The processes of plate tectonics, erosion, and sediment deposition have shaped the continental margins and ocean basins. In the next chapter you will learn that nearly all the ocean floor i ...
... rugged oceanic ridges, fl at abyssal plains, occasional deep trenches, and curving chains of volcanic islands. The processes of plate tectonics, erosion, and sediment deposition have shaped the continental margins and ocean basins. In the next chapter you will learn that nearly all the ocean floor i ...
Plate Tectonics
... they spit ash and small bits of lava called lapilli. • Some eruptions are quiet with very fluid (low viscosity) lava flows while others are explosive ...
... they spit ash and small bits of lava called lapilli. • Some eruptions are quiet with very fluid (low viscosity) lava flows while others are explosive ...
CLASS SET - Plate tectonics reading packet
... different continents. Additionally, Wegener pointed out remarkable lithologic (define) characteristics that matched with those of other continents. Continental drift was not immediately accepted by Wegener’s peers when he published his findings in 1915. Critics of continental drift indicated that hi ...
... different continents. Additionally, Wegener pointed out remarkable lithologic (define) characteristics that matched with those of other continents. Continental drift was not immediately accepted by Wegener’s peers when he published his findings in 1915. Critics of continental drift indicated that hi ...
Inside the Restless Earth
... Volcanoes – (Ch. 6) 20. How do Volcanoes form? Volcanoes form at convergent boundaries when oceanic crust is subducted and forced down toward the mantle where it melts, becomes less dense, and rise back to toward the surface as magma, eventually erupting from a volcano. Volcanoes can also form along ...
... Volcanoes – (Ch. 6) 20. How do Volcanoes form? Volcanoes form at convergent boundaries when oceanic crust is subducted and forced down toward the mantle where it melts, becomes less dense, and rise back to toward the surface as magma, eventually erupting from a volcano. Volcanoes can also form along ...
Clues for mountain formation
... Greek for strength) • old and stable part of the continental crust that has survived the merging and splitting of continents •interiors of continents •formed of a crust of lightweight rock, e.g. granite, attached to a section of the upper mantle. ...
... Greek for strength) • old and stable part of the continental crust that has survived the merging and splitting of continents •interiors of continents •formed of a crust of lightweight rock, e.g. granite, attached to a section of the upper mantle. ...
Geology of Connecticut
... When plates separate magma moves up through the gap creating new crustal material and a ridge. This is most prevalent along the Mid-Atlantic Ridge. The newly formed crust preserves the Earth’s magnetism at the time the material was formed. This record shows that the Earth’s magnetism has reversed po ...
... When plates separate magma moves up through the gap creating new crustal material and a ridge. This is most prevalent along the Mid-Atlantic Ridge. The newly formed crust preserves the Earth’s magnetism at the time the material was formed. This record shows that the Earth’s magnetism has reversed po ...
Plate Tectonics Webquest
... 3. The theory of plate tectonics explains the movement of Earth’s ____________________ and also explains the causes of _______________________________, ___________________________________, ________________________________, ___________________________________, and many other geologic phenomenon. 4. W ...
... 3. The theory of plate tectonics explains the movement of Earth’s ____________________ and also explains the causes of _______________________________, ___________________________________, ________________________________, ___________________________________, and many other geologic phenomenon. 4. W ...
Earthquakes, Volcanoes, and Mountain building
... Plate. Today the two plates are still colliding and the Himalayas continue to rise. If the first person climbed Everest in 1953 and the mountains grow about .5 ...
... Plate. Today the two plates are still colliding and the Himalayas continue to rise. If the first person climbed Everest in 1953 and the mountains grow about .5 ...
Document
... GL1 II KI 3c The various elements of the rock cycle may be linked directly to plate tectonic processes: (i) IGNEOUS – basaltic magmatism at oceanic spreading centres and island arcs (ii) SEDIMENTARY – erosional processes and depositional environments (iii) REGIONAL METAMORPHISM – in subduction and o ...
... GL1 II KI 3c The various elements of the rock cycle may be linked directly to plate tectonic processes: (i) IGNEOUS – basaltic magmatism at oceanic spreading centres and island arcs (ii) SEDIMENTARY – erosional processes and depositional environments (iii) REGIONAL METAMORPHISM – in subduction and o ...
inner core - Denton ISD
... The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans (oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust). Temperature: Surface Tem ...
... The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans (oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust). Temperature: Surface Tem ...
Unit 3- Plate Tectonics - Thomas C. Cario Middle School
... boundary. Neither plate is denser, so neither plate will subduct and melt to create volcanoes. 16. Scientists believe Africa must have once been located near the poles in order to have supported glaciers. 17. (use picture under number 23 to help you) Magnetic Reversal is shown in iron-bearing minera ...
... boundary. Neither plate is denser, so neither plate will subduct and melt to create volcanoes. 16. Scientists believe Africa must have once been located near the poles in order to have supported glaciers. 17. (use picture under number 23 to help you) Magnetic Reversal is shown in iron-bearing minera ...
Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.