Chapter 3 Notes - Todd S. Thuma Homepage
... b. Ridges are centers of seafloor spreading c. Mid-Atlantic Ridge split Pangea 1) Laurasia North America and Europe 2) Gondwanaland South America and Africa 3. Seafloor spreading continues to enlarge basin a. Cools & shrinks denser rock sinks deeper away from ridge b. Sediment gradually builds ...
... b. Ridges are centers of seafloor spreading c. Mid-Atlantic Ridge split Pangea 1) Laurasia North America and Europe 2) Gondwanaland South America and Africa 3. Seafloor spreading continues to enlarge basin a. Cools & shrinks denser rock sinks deeper away from ridge b. Sediment gradually builds ...
Name
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Quiz 4 material 104
... and melts at the oceanic ridges and creates new seafloor that moves like a conveyor belt symmetrically away from the ridge and as the seafloor becomes older, colder and denser it eventually sinks back into the Earth's interior at subduction zones where the oceanic crust is recycled (this model of pl ...
... and melts at the oceanic ridges and creates new seafloor that moves like a conveyor belt symmetrically away from the ridge and as the seafloor becomes older, colder and denser it eventually sinks back into the Earth's interior at subduction zones where the oceanic crust is recycled (this model of pl ...
Convergent Boundaries: Here crust is destroyed and recycled back
... When two oceanic plates converge one is usually subducted under the other and in the process a deep oceanic trench is formed. The Marianas Trench, for example, is a deep trench created as the result of the Phillipine Plate subducting under the Pacific Plate. Oceanic-oceanic plate convergence also re ...
... When two oceanic plates converge one is usually subducted under the other and in the process a deep oceanic trench is formed. The Marianas Trench, for example, is a deep trench created as the result of the Phillipine Plate subducting under the Pacific Plate. Oceanic-oceanic plate convergence also re ...
Plate Tectonics Quiz Study Guide
... 29. What the 4 main pieces of evidence that led scientist to identify the Jan 26, 1700 date for the last megathrust earthquake to hit Washington? ...
... 29. What the 4 main pieces of evidence that led scientist to identify the Jan 26, 1700 date for the last megathrust earthquake to hit Washington? ...
Chapter 4 - TeacherWeb
... The region where an oceanic plate sinks down into the asthenosphere at a convergent boundary usually between continental and oceanic plates ...
... The region where an oceanic plate sinks down into the asthenosphere at a convergent boundary usually between continental and oceanic plates ...
Study Guide: Plate Tectonics
... tectonics, on which layer do plates float? 50. Which layer is made up the crust and part of the mantle? 51. Overall, which layer is the thickest? Use the diagram below to answer questions ...
... tectonics, on which layer do plates float? 50. Which layer is made up the crust and part of the mantle? 51. Overall, which layer is the thickest? Use the diagram below to answer questions ...
Volcanoes and Igneous Activity Earth - Chapter 4
... returned to the mantle • Surface expression of descending plate is an ocean trench ...
... returned to the mantle • Surface expression of descending plate is an ocean trench ...
Handout 2.3-2 Standard 2 Objective 3.a, b, d, and e
... 8. What happens during the collision of two plates whose edges consist of oceanic lithosphere? • The denser plate subducts beneath the other oceanic plate. ...
... 8. What happens during the collision of two plates whose edges consist of oceanic lithosphere? • The denser plate subducts beneath the other oceanic plate. ...
Oceanic Crust
... subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
... subducts underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
Layers of the Earth
... level of the asthenosphere, just like The thicker continental crust displaces ice displacing water. more of the asthenosphere than does oceanic crust. ...
... level of the asthenosphere, just like The thicker continental crust displaces ice displacing water. more of the asthenosphere than does oceanic crust. ...
third quarter - New Haven Science
... by convection currents in the hot liquid mantle beneath the crust. 4. The presence of plant and animal fossils of the same age found around different continent shores, along with the matching coastline shapes of continental land masses, provides evidence that the continents were once joined. 5. At t ...
... by convection currents in the hot liquid mantle beneath the crust. 4. The presence of plant and animal fossils of the same age found around different continent shores, along with the matching coastline shapes of continental land masses, provides evidence that the continents were once joined. 5. At t ...
THIRD QUARTER II. UNIT 5: PLATE TECTONICS Time
... by convection currents in the hot liquid mantle beneath the crust. 4. The presence of plant and animal fossils of the same age found around different continent shores, along with the matching coastline shapes of continental land masses, provides evidence that the continents were once joined. 5. At t ...
... by convection currents in the hot liquid mantle beneath the crust. 4. The presence of plant and animal fossils of the same age found around different continent shores, along with the matching coastline shapes of continental land masses, provides evidence that the continents were once joined. 5. At t ...
World Geography 3200 / 3202: Unit 1 – Plate Tectonics Name: In
... 1.1.1 Explain how compressional forces are caused. (k) 1.1.2 Explain how tensional forces are caused. (k) 1.1.3 Relate selected plate movements to compressional and tensional forces. (a) ...
... 1.1.1 Explain how compressional forces are caused. (k) 1.1.2 Explain how tensional forces are caused. (k) 1.1.3 Relate selected plate movements to compressional and tensional forces. (a) ...
File
... North American South American Eurasian African Pacific [largest] Indian/ Australian Antarctica Nazca ...
... North American South American Eurasian African Pacific [largest] Indian/ Australian Antarctica Nazca ...
Plate Tectonics
... Oceanic ridges are continuous elevated zones on the floor of all major ocean basins. The rifts at the crest of ridges represent divergent plate boundaries. Rift valleys are deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or on land. Seaflo ...
... Oceanic ridges are continuous elevated zones on the floor of all major ocean basins. The rifts at the crest of ridges represent divergent plate boundaries. Rift valleys are deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or on land. Seaflo ...
Don’t Break Your Plate
... When two continental plates meet head-on, neither one subducts. Plates tend to buckle and rise up/sideways to form mountain ranges ...
... When two continental plates meet head-on, neither one subducts. Plates tend to buckle and rise up/sideways to form mountain ranges ...
Earth Science Honors
... the older the island Pacific plate moves over hot spot - volcanic mountains form Evidence plates moved ...
... the older the island Pacific plate moves over hot spot - volcanic mountains form Evidence plates moved ...
Plate Tectonics Continental Drift Around 1912, a German scientist
... 5. The idea that the sea floor spread away from mid-oceanic ridges and was subducted beneath a continent or island arc as a result of mantle convection was proposed by Harry Hess in the early 1960s. 6. Sea-floor spreading explains processes at the mid-oceanic ridges as the result of rising mantle: t ...
... 5. The idea that the sea floor spread away from mid-oceanic ridges and was subducted beneath a continent or island arc as a result of mantle convection was proposed by Harry Hess in the early 1960s. 6. Sea-floor spreading explains processes at the mid-oceanic ridges as the result of rising mantle: t ...
plates - bethwallace
... • If you look at a map of the world, you may notice that some of the continents could fit together like pieces of a puzzle. ...
... • If you look at a map of the world, you may notice that some of the continents could fit together like pieces of a puzzle. ...
Lab 2a_Plate Tectonics (preliminary)
... (3) There are 14 plates that make up our Earth’s crust, 8 of these are considered “major plates,” name them (Fig. 3-10 will help): ...
... (3) There are 14 plates that make up our Earth’s crust, 8 of these are considered “major plates,” name them (Fig. 3-10 will help): ...
Earth Science Name Web Inquiry—Plate Tectonics/Earth`s Interior
... e. Recognize that lithospheric plates constantly move and cause major geological events on the earth’s surface. f. Explain the effects of physical processes (plate tectonics, erosion, deposition, volcanic eruption, gravity) on geological features including oceans (composition, currents, and tides). ...
... e. Recognize that lithospheric plates constantly move and cause major geological events on the earth’s surface. f. Explain the effects of physical processes (plate tectonics, erosion, deposition, volcanic eruption, gravity) on geological features including oceans (composition, currents, and tides). ...
Convergent boundary
... As two plates continue to move apart, the rock in the seafloor grows older as its distance from the rift zone increases, and as it ages, it cools and becomes denser and is buried under marine sediments that are deposited on the seafloor. ...
... As two plates continue to move apart, the rock in the seafloor grows older as its distance from the rift zone increases, and as it ages, it cools and becomes denser and is buried under marine sediments that are deposited on the seafloor. ...
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.