A2 : Plate Tectonics (essay outline)
... 6. The subducted part of the oceanic plate melts under great heat and pressure upon entering the asthenosphere. So, the oceanic crust is being destroyed. ...
... 6. The subducted part of the oceanic plate melts under great heat and pressure upon entering the asthenosphere. So, the oceanic crust is being destroyed. ...
Plate_tectonics_2 - Red Hook Central Schools
... 1. Two oceanic plates- resulting in a subduction zone and an island arc. Ex. Aleutian Islands and trench 2. An oceanic plate and a continental plate – resulting in a subduction zone and coastal mountains ...
... 1. Two oceanic plates- resulting in a subduction zone and an island arc. Ex. Aleutian Islands and trench 2. An oceanic plate and a continental plate – resulting in a subduction zone and coastal mountains ...
Pacific Northwest
... 13. A _______ is a concentrated area of major, long-term volcanic activity fed by a rising plume of magma. This area can cause landmass changes within a tectonic plate and is not necessarily associated with a plate boundary. The island of Hawai'i is a classic example. A. transform boundary B. mid-oc ...
... 13. A _______ is a concentrated area of major, long-term volcanic activity fed by a rising plume of magma. This area can cause landmass changes within a tectonic plate and is not necessarily associated with a plate boundary. The island of Hawai'i is a classic example. A. transform boundary B. mid-oc ...
Earth`s Tectonic Plates – Lesson Plan-WA
... divergent –where plates move apart, convergent – where plates come together and transform – where plates slide past each other. At divergent plate boundaries, mid-oceanic ridges and rises and rift valleys are created, along with new oceanic crust. There are three ways that plates can collide at conv ...
... divergent –where plates move apart, convergent – where plates come together and transform – where plates slide past each other. At divergent plate boundaries, mid-oceanic ridges and rises and rift valleys are created, along with new oceanic crust. There are three ways that plates can collide at conv ...
Unit 1: Structure of the Earth
... • Center of the Earth; under extreme pressure • Composition: iron and nickel • Relative Temperature: 2,000oC to 5,000oC • Density: 10 to 13 times denser than water ...
... • Center of the Earth; under extreme pressure • Composition: iron and nickel • Relative Temperature: 2,000oC to 5,000oC • Density: 10 to 13 times denser than water ...
Document
... 1. The 3 layers listed above (crust, mantle, and core) are divided based on their composition, or what they are made up of. 2. We also can divide the layers based on their physical properties, or how they behave. a. Lithosphere—outermost rigid layer of Earth that is composed of the crust and upper m ...
... 1. The 3 layers listed above (crust, mantle, and core) are divided based on their composition, or what they are made up of. 2. We also can divide the layers based on their physical properties, or how they behave. a. Lithosphere—outermost rigid layer of Earth that is composed of the crust and upper m ...
Chapter 10: Section 1 Continental Drift
... • rifting the process by which Earth’s crust breaks apart; can occur within continental crust or oceanic crust • Slow movements of tectonic plates change the size and shape of the continents over millions of years. • All of the continents that exist today contain large areas of stable rock, called c ...
... • rifting the process by which Earth’s crust breaks apart; can occur within continental crust or oceanic crust • Slow movements of tectonic plates change the size and shape of the continents over millions of years. • All of the continents that exist today contain large areas of stable rock, called c ...
Moving and Shaking: Tectonic Plates and Geological Events
... floor. Push your left hand slightly under your right hand. This motion demonstrates what happens when one plate slides under the other. This is referred to as a subduction zone (sub- means to go under). The part of the plate that slides underneath melts due to high temperature and becomes magma. Thi ...
... floor. Push your left hand slightly under your right hand. This motion demonstrates what happens when one plate slides under the other. This is referred to as a subduction zone (sub- means to go under). The part of the plate that slides underneath melts due to high temperature and becomes magma. Thi ...
Moving and Shaking: Tectonic Plates and Geological Events
... floor. Push your left hand slightly under your right hand. This motion demonstrates what happens when one plate slides under the other. This is referred to as a subduction zone (sub- means to go under). The part of the plate that slides underneath melts due to high temperature and becomes magma. Thi ...
... floor. Push your left hand slightly under your right hand. This motion demonstrates what happens when one plate slides under the other. This is referred to as a subduction zone (sub- means to go under). The part of the plate that slides underneath melts due to high temperature and becomes magma. Thi ...
11 Sea Floor
... 1. Passive Margin = where oceanic plate is fused to continental plate and large amount of sediment is deposited. ...
... 1. Passive Margin = where oceanic plate is fused to continental plate and large amount of sediment is deposited. ...
Physiography of the Seafloor
... • Troughs perpendicular to mid ocean ridge segments, which they offset. • 10-100 km wide, up to 3500 km long • Up to a few km relief ...
... • Troughs perpendicular to mid ocean ridge segments, which they offset. • 10-100 km wide, up to 3500 km long • Up to a few km relief ...
Inferred Properties about Earth`s Interior
... outer core: orange stiffer mantle: purple (upper and lower) asthenosphere (top part of upper mantle):blue rigid mantle: yellow MOHO: yellow (darken slightly) Crust: greenShade in LIGHTLY with colored pencil. 3. See board for example. 4. Now we are ready to practice reading this chart. ...
... outer core: orange stiffer mantle: purple (upper and lower) asthenosphere (top part of upper mantle):blue rigid mantle: yellow MOHO: yellow (darken slightly) Crust: greenShade in LIGHTLY with colored pencil. 3. See board for example. 4. Now we are ready to practice reading this chart. ...
Continental Drift
... the continents were once joined together came from the close fit between the west coast of Africa and the east coast of South America. Studies have shown that the fit between the continents is actually in the range of 95% along the continental shelves. ...
... the continents were once joined together came from the close fit between the west coast of Africa and the east coast of South America. Studies have shown that the fit between the continents is actually in the range of 95% along the continental shelves. ...
3 Types of heat transfer 2. Conduction
... transfer of heat through large scale fluid flow. flow caused by density differences due to temperature differences ...
... transfer of heat through large scale fluid flow. flow caused by density differences due to temperature differences ...
Chapter 1 Introduction
... http://www.geology.um.maine.edu/geodynamics/analogwebsite/UndergradProjects2005/Perry/html/index.html ...
... http://www.geology.um.maine.edu/geodynamics/analogwebsite/UndergradProjects2005/Perry/html/index.html ...
Task - Science - Grade 8 - The Development of Scientific Theories
... bottom of the ocean things like the dynamic process of sea floor spreading (a mechanism for moving the crustal plates). Wegener’s simple vision was developed into a theory of how the Earth works which is known as Plate Tectonics. Scientists continue to refine that theory as more evidence is collecte ...
... bottom of the ocean things like the dynamic process of sea floor spreading (a mechanism for moving the crustal plates). Wegener’s simple vision was developed into a theory of how the Earth works which is known as Plate Tectonics. Scientists continue to refine that theory as more evidence is collecte ...
Is there Hydrocarbon Potential in the Oceanic Crust Basins Offshore
... At divergent plate boundaries, continental rifts occur as the plates move apart from each other. At continental rifts, the crust is extended and faulted and as a result splits apart. At this location, a volcanic ridge is formed as hot mantle material wells up to fill the void left by the separating ...
... At divergent plate boundaries, continental rifts occur as the plates move apart from each other. At continental rifts, the crust is extended and faulted and as a result splits apart. At this location, a volcanic ridge is formed as hot mantle material wells up to fill the void left by the separating ...
Task - Science - Grade 8 - The Development of Scientific Theories
... bottom of the ocean things like the dynamic process of sea floor spreading (a mechanism for moving the crustal plates). Wegener’s simple vision was developed into a theory of how the Earth works which is known as Plate Tectonics. Scientists continue to refine that theory as more evidence is collecte ...
... bottom of the ocean things like the dynamic process of sea floor spreading (a mechanism for moving the crustal plates). Wegener’s simple vision was developed into a theory of how the Earth works which is known as Plate Tectonics. Scientists continue to refine that theory as more evidence is collecte ...
Plate Tectonics and Sedimentation: Where do sediments
... crust heated from below, thermally expands and thins creation of tension fractures (= normal faults) extension causes collapse of thinned crust (= horsts & grabens) creation of long, narrow, fault-bounded central rift valley thick sequences of continental deposits due to rapid subsidence and high re ...
... crust heated from below, thermally expands and thins creation of tension fractures (= normal faults) extension causes collapse of thinned crust (= horsts & grabens) creation of long, narrow, fault-bounded central rift valley thick sequences of continental deposits due to rapid subsidence and high re ...
Plate Tectonics and Geology
... The inner core is made of solid iron The closest model of the inner core we have is an iron nickel ...
... The inner core is made of solid iron The closest model of the inner core we have is an iron nickel ...
3rd Nine Weeks Study Guide Earth + Space 6.6B Calculate density
... slabs of rock, or plates, that move with respect to each other. ...
... slabs of rock, or plates, that move with respect to each other. ...
Sea-Floor Spreading Lab
... increased. New crust is being created along the divergent plate boundaries and forcing the older crust towards the coastlines. The observation of the oldest crust being far from the boundary and the newest crust being right along it supports the idea that the plates are diverging. These two pieces o ...
... increased. New crust is being created along the divergent plate boundaries and forcing the older crust towards the coastlines. The observation of the oldest crust being far from the boundary and the newest crust being right along it supports the idea that the plates are diverging. These two pieces o ...
Answers - MrTubb
... 5. Lithospheric plates the size of continents and oceans are constantly moving as a result of activity in the Earth's mantle. Approximately how fast do these plates move? A. a few meters per year B. a few kilometers per year C. a few centimeters per year D. a few hundred kilometers per year ...
... 5. Lithospheric plates the size of continents and oceans are constantly moving as a result of activity in the Earth's mantle. Approximately how fast do these plates move? A. a few meters per year B. a few kilometers per year C. a few centimeters per year D. a few hundred kilometers per year ...
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.