Compare and contrast divergent, convergent, and transform
... plate, one will sink creating a subduction zone. The other will rise up and form volcanoes in the ocean. ...
... plate, one will sink creating a subduction zone. The other will rise up and form volcanoes in the ocean. ...
Plate Tectonics: A Unifying Theory
... Formed at spreading ridges, generally basalts and gabbro Pillow lavas, sheeted dikes, layered gabbros, and peridotites make up the oceanic crust Ophiolites are used to support plate collisions when they are found on continents ...
... Formed at spreading ridges, generally basalts and gabbro Pillow lavas, sheeted dikes, layered gabbros, and peridotites make up the oceanic crust Ophiolites are used to support plate collisions when they are found on continents ...
Objectives: Compare and contrast divergent, convergent, and
... and part of the upper mantel. Together they are called the lithosphere. It is about 100km (62 miles) thick and it is less dense than the material underneath so it “floats” on top. ...
... and part of the upper mantel. Together they are called the lithosphere. It is about 100km (62 miles) thick and it is less dense than the material underneath so it “floats” on top. ...
PowerPoint
... Alaska earthquake, or the 1960 M=9.5 Chile earthquake. Current crustal deformation measurements in this area provide evidence for this model. Geological evidence also indicates that huge subduction earthquakes have struck this coast every 300-800 years. ...
... Alaska earthquake, or the 1960 M=9.5 Chile earthquake. Current crustal deformation measurements in this area provide evidence for this model. Geological evidence also indicates that huge subduction earthquakes have struck this coast every 300-800 years. ...
Unit 7 Study Guide Answer Key
... 5. A geologist is a scientist who studies Earth and the processes that have shaped Earth over time. II. Plate Tectonics 6. The “Theory of Plate Tectonics” is the theory that pieces of the Earth’s lithosphere, called plates, move about slowly on top of the asthenosphere. Evidence to support this incl ...
... 5. A geologist is a scientist who studies Earth and the processes that have shaped Earth over time. II. Plate Tectonics 6. The “Theory of Plate Tectonics” is the theory that pieces of the Earth’s lithosphere, called plates, move about slowly on top of the asthenosphere. Evidence to support this incl ...
Plate Tectonics
... mantle is warmer. It expands, becomes less dense and rises. When it reaches the upper mantle it cools, contracts, becoming more dense and sinks. This constant rise and fall of magma causes the convection currents that drive plate tectonics. The crust plates ride along on top of these convection curr ...
... mantle is warmer. It expands, becomes less dense and rises. When it reaches the upper mantle it cools, contracts, becoming more dense and sinks. This constant rise and fall of magma causes the convection currents that drive plate tectonics. The crust plates ride along on top of these convection curr ...
Seafloor Spreading - Paramus Public Schools
... reflected back from ocean floor •Time measured and used to calculate distance to ocean floor ...
... reflected back from ocean floor •Time measured and used to calculate distance to ocean floor ...
Plate Tectonics
... mantle is warmer. It expands, becomes less dense and rises. When it reaches the upper mantle it cools, contracts, becoming more dense and sinks. This constant rise and fall of magma causes the convection currents that drive plate tectonics. The crust plates ride along on top of these convection curr ...
... mantle is warmer. It expands, becomes less dense and rises. When it reaches the upper mantle it cools, contracts, becoming more dense and sinks. This constant rise and fall of magma causes the convection currents that drive plate tectonics. The crust plates ride along on top of these convection curr ...
Sea-floor spreading
... the process of sea-floor spreading? • At the mid-ocean ridge, molten material rises from the mantle and erupts. The molten material then spreads out, pushing older rock to both sides of the ridge. • Over tens of millions of years, the process continues until the oldest ocean floor collides with the ...
... the process of sea-floor spreading? • At the mid-ocean ridge, molten material rises from the mantle and erupts. The molten material then spreads out, pushing older rock to both sides of the ridge. • Over tens of millions of years, the process continues until the oldest ocean floor collides with the ...
Plate Tectonics - UNLV Geoscience
... At convergent plate boundaries or convergent margins, two plates, at least one of which is oceanic, move toward each other. But rather than butting each other like angry rams, one oceanic plate bends and begins to sink down into the asthenosphere beneath the other plate. This sinking process, termed ...
... At convergent plate boundaries or convergent margins, two plates, at least one of which is oceanic, move toward each other. But rather than butting each other like angry rams, one oceanic plate bends and begins to sink down into the asthenosphere beneath the other plate. This sinking process, termed ...
Test 2
... The upper lithosphere is also called the: (43) As continental masses erode down, isostatic adjustment causes them to: (45F) Which of these statements about activities along subduction zones is true? (54F) On a global map, it can be seen that plate boundaries coincide with: (46) Plate tectonics is as ...
... The upper lithosphere is also called the: (43) As continental masses erode down, isostatic adjustment causes them to: (45F) Which of these statements about activities along subduction zones is true? (54F) On a global map, it can be seen that plate boundaries coincide with: (46) Plate tectonics is as ...
Plate Tectonics Study Guide: Answer key
... of plates called the lithosphere, these plates slide on the asthenosphere which is soft and tar like. ...
... of plates called the lithosphere, these plates slide on the asthenosphere which is soft and tar like. ...
Pack 15 KS3 Chemistry rock detectives Earth structure
... "to build." If we put these two words together, we get the term plate tectonics and this is the theory geologists use to explain how the Earth's surface is built up. The theory of plate tectonics says that the Earth's outer layer is broken into twelve or more plates. Some are large and some are smal ...
... "to build." If we put these two words together, we get the term plate tectonics and this is the theory geologists use to explain how the Earth's surface is built up. The theory of plate tectonics says that the Earth's outer layer is broken into twelve or more plates. Some are large and some are smal ...
THE CONTINTENTAL DRIFT IDEA
... of one or both plates up into a rugged mountain range, and sometimes bends the other down into a deep seafloor trench. A chain of volcanoes often forms parallel to the boundary, to the mountain range, and to the trench. Powerful earthquakes shake a wide area on both sides of the boundary. ...
... of one or both plates up into a rugged mountain range, and sometimes bends the other down into a deep seafloor trench. A chain of volcanoes often forms parallel to the boundary, to the mountain range, and to the trench. Powerful earthquakes shake a wide area on both sides of the boundary. ...
Document
... Earth, and how do we know all of this “stuff” without having been there? The center of the Earth is too hot and too high of a pressure. We know about the inside of the Earth because of Seismological Studies. 41. Why is it so hot in the middle of the Earth? Left over heat from the formation of the so ...
... Earth, and how do we know all of this “stuff” without having been there? The center of the Earth is too hot and too high of a pressure. We know about the inside of the Earth because of Seismological Studies. 41. Why is it so hot in the middle of the Earth? Left over heat from the formation of the so ...
KArl quilligan plate tectonics powerpoint
... HISTORY OF PANGEA: -Pangaea or “all Earth” existed until about 300 million years ago during Carboniferous period -Scientist & geologist Alfred Wegener developed idea of Pangaea, he was ridiculed for his theory because they didn’t have much proof about Pangaea -Wegener was a meteorologist as well as ...
... HISTORY OF PANGEA: -Pangaea or “all Earth” existed until about 300 million years ago during Carboniferous period -Scientist & geologist Alfred Wegener developed idea of Pangaea, he was ridiculed for his theory because they didn’t have much proof about Pangaea -Wegener was a meteorologist as well as ...
2 The Geology and Tectonics of the Tohoku Region
... The cause of the active tectonic movements affecting the Earth was not well explained until the late 1960s, when the realization was made that the outer part of the Earth is divided into pieces, known as plates, about 100 km thick (Takeuchi et al., 1970). The plates consist of both the crust and coo ...
... The cause of the active tectonic movements affecting the Earth was not well explained until the late 1960s, when the realization was made that the outer part of the Earth is divided into pieces, known as plates, about 100 km thick (Takeuchi et al., 1970). The plates consist of both the crust and coo ...
50 PLATE TECTONICS I. Introduction A. General 1. The theory of
... e.g. Red Sea in Middle East is an example of a very young ocean basin that is just beginning the process of seafloor spreading. ...
... e.g. Red Sea in Middle East is an example of a very young ocean basin that is just beginning the process of seafloor spreading. ...
17.3 Plate Boundaries
... subduction zone Continental crust that pulls behind cannot descend because it’s less dense so the edges of both continental plates collide and become crumpled, folded, and ...
... subduction zone Continental crust that pulls behind cannot descend because it’s less dense so the edges of both continental plates collide and become crumpled, folded, and ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.