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EES Geology Vocabulary Review Name___________________
EES Geology Vocabulary Review Name___________________

... Convergent plate boundary- where two plates collide Divergent plate boundary- where two plates move away from each other Transform plate boundary- where two plates slide alongside each other Continental Crust- thicker but less dense regions of the Earth’s crust rich in silicon and oxygen Oceanic Cru ...
Fast Changes to the Earth`s Surface
Fast Changes to the Earth`s Surface

... Below Earth’s crust, red-hot rock, called magma, rises up. Force from below pushes it up toward the surface. A volcano forms when magma and hot gases escape through openings in the surface of the Earth. ...
Earth`s largest environmental catastrophe 250 million years ago
Earth`s largest environmental catastrophe 250 million years ago

... They suggest that the Siberian mantle plume contained a large fraction of about 15 percent of recycled oceanic crust; i.e. the crust that had long before been subducted into the deep mantle and Large Igneous Provinces (LIPs) are huge then, through the hot mantle plume, brought back accumulations of ...
Fast Changes to the Earth`s Surface
Fast Changes to the Earth`s Surface

... Below Earth’s crust, red-hot rock, called magma, rises up. Force from below pushes it up toward the surface. A volcano forms when magma and hot gases escape through openings in the surface of the Earth. ...
1 UNIT 10 Plate Tectonics Study Guide Chapters 1, 2, 9, and most of
1 UNIT 10 Plate Tectonics Study Guide Chapters 1, 2, 9, and most of

... - Seafloor Spreading is a theory that the seafloor is spreading apart, propelled by convection currents in the mantle, and that the seafloor is moving symmetrically away from an oceanic ridge. - H. H. Hess’s seafloor spreading thesis proposed: 1) Mantle convection currents (caused by Earth’s interna ...
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... one of the slabs of lithosphere is oceanic, that oceanic plate will plunge into the trench and back into the mantle. The meeting of two enormous slabs of lithosphere and subduction of one results in magma generation and earthquakes. If both plates meet with continental crust, there will be mountain ...
Name: Date:____ Period:______ Geology Vocabulary Chart
Name: Date:____ Period:______ Geology Vocabulary Chart

... assessed on creativity, completion of definitions and neatness. All images should be neat and colored. 1. Continental crust- the less dense type of crust on the earth’s surface that is above sea level. 2. Oceanic crust- the more dense (higher iron content) that lies on the bottom of the ocean floor. ...
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Ocean Basins

... continental and oceanic plates move in same direction at same speed examples – margins around Atlantic Ocean contain: coastal plain (was continental shelf during higher sea level) broad continental shelf continental slope and rise Collision margins continental and oceanic plates move toward each oth ...
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Name: Ms. A Watts Science Period _____ 22 October 2015

... You must include all of the plates found in the Northern Hemisphere o Eurasian Plate o Pacific Plate o North American Plate o Cocos Plate o Caribbean Plate o African Plate o Arabian Plate cut sheet must include: You will suggest the best route for the road. You must also indicate what possible diffi ...
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Divergent Boundaries and Spreading Plates

... ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ _______________________________________________ Early in the rift formation _________and _______ flow in the low valleys ...
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Section Quiz

... They are part of mid-ocean ridges along divergent plate boundaries. Magma rising to Earth’s surface at divergent boundaries makes midocean ridges volcanically active. when the peaks of volcanic mountains rise above sea level; the Azores in the North Atlantic on the ocean floor at hot spots Hot spots ...
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The Age of the Earth Motions in the Earth`s Interior

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Origin of Oceanic Islands

... • Highly controversial; ridiculed, esp. in U.S. • Finally accepted by mainstream geology in 1960s. ...
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science ch 9 earths changing surface sg

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06 Science FMA March 11

... 20 Imagine that you can travel to the center of the Earth. The diagram above lists the average thickness of each layer of the Earth. How far from the center of the Earth would you be if you were leaving the lithosphere and entering the asthenosphere in kilometers? Record and bubble your answer. ...
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...  At divergent boundaries under water, long deep cracks called ______ are formed. Magma flows through these cracks and is ______ by seawater. ...
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Mysteries of the mountains

... CONTINENTAL DRIFT and PLATE TECTONICS Ideas about drifting continents go back at least a couple of hundred years, but it was not until about 1910 that a well-defined hypothesis was elaborated. A couple of decades later, a theory was presented claiming that such motion was caused by convection in th ...
study guide - Hull Lessons
study guide - Hull Lessons

... Earth’s lithosphere is formed by the mantle’s rigid upper part and the crust, which is the top, hard rock layer. Beneath the Earth’s crust lies the mantle, which is partly solid and partly semi-solid. During the 1500’s, geographers who made the first accurate maps noticed that the continents seemed ...
Part2platetectonics BEST!
Part2platetectonics BEST!

... Subduction processes in oceanic-oceanic plate convergence also result in the formation of volcanoes. Over millions of years, the erupted lava and volcanic debris pile up on the ocean floor until a submarine volcano rises above sea level to form an island volcano. Such volcanoes are typically strung ...
Test Bank Questions 6th Edition
Test Bank Questions 6th Edition

... become more dense. As its density increases, it sinks, and returns to the original level where it will eventually become heated again. ...
Plate Tectonics Boundaries Chart
Plate Tectonics Boundaries Chart

Glossary for Plate tectonics and associated hazards
Glossary for Plate tectonics and associated hazards

... Surface seismic waves which cause the round to move up and down the average period of time between earthquakes in a seismic region A scale to measure the magnitude of earthquakes. It is a logarithmic scale where 6.0 is ten times greater than 5.0 Forms where two parallel down faults have formed a tro ...
Slide 1 - Duplin County Schools
Slide 1 - Duplin County Schools

... The ___________________ oceanic divergent boundary. It is located Atlantic Ocean. It is an along the floor of the ________ immensely long mountain chain that extends for about 10,000 miles (16,000 km). Most of ...
Seismic waves - Civil Engineering, IISc
Seismic waves - Civil Engineering, IISc

... Earthquakes are not randomly distributed over the Earth's surface. They are observed to be concentrated in specific zones. Volcanoes and mountain ranges also found in these zones. Theory of plate tectonics which combines many of the ideas about continental drift explains the reasons for these seismo ...
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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.
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