The Theory of Plate Tectonics
... convergent, divergent, and transform. convergent boundary: formed by the collision of two lithospheric plates. Plate ...
... convergent, divergent, and transform. convergent boundary: formed by the collision of two lithospheric plates. Plate ...
Structure of the Earth Crust
... into place for a long periods, allowing pressure to build below the crust. •When the pressure gets too great the plates come unstuck and move. This is an ...
... into place for a long periods, allowing pressure to build below the crust. •When the pressure gets too great the plates come unstuck and move. This is an ...
Plates
... coast of South America of the same plants and the same reptiles. Plant is called Glossopteris; Reptile is called Lystrosauris. He also found the same type of rock on the two coasts. ...
... coast of South America of the same plants and the same reptiles. Plant is called Glossopteris; Reptile is called Lystrosauris. He also found the same type of rock on the two coasts. ...
Position of the continents
... together • Look at your map of the world again, which continents seem as if they fit together well? ...
... together • Look at your map of the world again, which continents seem as if they fit together well? ...
plate tectonics
... Although subduction is believed to be the strongest force driving plate motions, it cannot be the only force since there are plates such as the North American Plate which are moving, yet are nowhere being subducted. Three Thoughts: Mantle Dynamics Large scale convection currents in the upper mant ...
... Although subduction is believed to be the strongest force driving plate motions, it cannot be the only force since there are plates such as the North American Plate which are moving, yet are nowhere being subducted. Three Thoughts: Mantle Dynamics Large scale convection currents in the upper mant ...
Ecosystems & Energy
... Plate Tectonics (Plate Handout) • Movement of plates (2-20 cm per yr) • Divergent plates: 2 plates moving apart from each other forms new plates, volcanoes • Convergent plates: 2 plates moving toward each other forms mountains • Transform plates: 2 plates slide past each other makes earthquak ...
... Plate Tectonics (Plate Handout) • Movement of plates (2-20 cm per yr) • Divergent plates: 2 plates moving apart from each other forms new plates, volcanoes • Convergent plates: 2 plates moving toward each other forms mountains • Transform plates: 2 plates slide past each other makes earthquak ...
Key to Investigation 2: Plate Tectonics
... 1b. It is the moving of plates rubbing against each other that cause earthquakes. Subduction zones are primarily the cause of volcanoes. Converging or colliding plates push up mountains. If plates are not locally interacting with each other, there is little geologic activity, such as in Central Aust ...
... 1b. It is the moving of plates rubbing against each other that cause earthquakes. Subduction zones are primarily the cause of volcanoes. Converging or colliding plates push up mountains. If plates are not locally interacting with each other, there is little geologic activity, such as in Central Aust ...
Continental Drift through Plate Tectonics
... 2. Explain the three types of evidence Wegener used to support his theory that continents move. 3. What is the main reason scientists rejected Wegener’s theory of continental drift? 4. Use Wegener’s theory of continental drift to explain why we find coal deposits in Antarctica? (Coal deposits can on ...
... 2. Explain the three types of evidence Wegener used to support his theory that continents move. 3. What is the main reason scientists rejected Wegener’s theory of continental drift? 4. Use Wegener’s theory of continental drift to explain why we find coal deposits in Antarctica? (Coal deposits can on ...
Plate Tectonics for Website
... Atlantic Ocean was created by this process. The mid-Atlantic Ridge is an area where new sea floor is being created. As the rift valley expands two continental plates have been constructed from the original one. The molten rock continues to push the crust apart creating new crust as it does. As the r ...
... Atlantic Ocean was created by this process. The mid-Atlantic Ridge is an area where new sea floor is being created. As the rift valley expands two continental plates have been constructed from the original one. The molten rock continues to push the crust apart creating new crust as it does. As the r ...
Plate Tectonics Review Guide new lithosphere
... 10. Compare and contrast the oceanic crust and the continental crust – be sure to include age, thickness (size) and density. ...
... 10. Compare and contrast the oceanic crust and the continental crust – be sure to include age, thickness (size) and density. ...
- Frost Middle School
... • There is more pressure than the mantle but less pressure than the inner core ...
... • There is more pressure than the mantle but less pressure than the inner core ...
Crust and Mantle vs. Lithosphere and Asthenosphere
... confusion results from the different ways scientists study the Earth. Lithosphere, asthenosphere, and mesosphere (we usually don't discuss this last layer) represent changes in the mechanical properties of the Earth. Crust and mantle refer to changes in the chemical composition of the Earth. Lithosp ...
... confusion results from the different ways scientists study the Earth. Lithosphere, asthenosphere, and mesosphere (we usually don't discuss this last layer) represent changes in the mechanical properties of the Earth. Crust and mantle refer to changes in the chemical composition of the Earth. Lithosp ...
Doug - Cal State LA - Instructional Web Server
... Harry Hess suggests new seafloor is created at mid-ocean ridges and is destroyed in deep ocean trenches ...
... Harry Hess suggests new seafloor is created at mid-ocean ridges and is destroyed in deep ocean trenches ...
divergent boundaries - Thomas C. Cario Middle School
... of lithosphere. Most transform faults join two segments of a mid-ocean ridge. Along these boundaries the seafloor moves in opposite directions. However, transform faults are not solely located in the ocean basin. Probably the most famous transform fault is Fault in California. Here the Pacific plate ...
... of lithosphere. Most transform faults join two segments of a mid-ocean ridge. Along these boundaries the seafloor moves in opposite directions. However, transform faults are not solely located in the ocean basin. Probably the most famous transform fault is Fault in California. Here the Pacific plate ...
Plate Tectonics
... Subduction and Convergence Occurs when a cooler, denser plate descends below a less dense plate. In the event of oceanic and oceanic plate convergence, a trench is formed. Subducted plate melts and becomes magma, rises to the surface, and erupts as ...
... Subduction and Convergence Occurs when a cooler, denser plate descends below a less dense plate. In the event of oceanic and oceanic plate convergence, a trench is formed. Subducted plate melts and becomes magma, rises to the surface, and erupts as ...
Name ______ Science Period ______ TEST Review Quarter 2
... 33. A(n) __________________________________ is a gap in the geologic record where some rock layers have been lost because of erosion. 34. A ______________________________________________________ is formed at a transform boundary. 35. A scientist find the absolute age of a sedimentary layer by findin ...
... 33. A(n) __________________________________ is a gap in the geologic record where some rock layers have been lost because of erosion. 34. A ______________________________________________________ is formed at a transform boundary. 35. A scientist find the absolute age of a sedimentary layer by findin ...
plates How many major sections is Earth`s crust divided into?
... How many major sections is Earth’s crust divided into? ...
... How many major sections is Earth’s crust divided into? ...
Earth’s Sub-Surface Processes
... CRUST: outer surface; can be oceanic or continental LITHOSPHERE: rigid interior of crust ...
... CRUST: outer surface; can be oceanic or continental LITHOSPHERE: rigid interior of crust ...
Outline
... • Transform plate boundaries occur between segments of the mid-ocean ridge • Can also occur on land (ex: San Andreas Fault) Hotspots and plate tectonics • Hotspots are stationary and have abundant volcanic activity • The lithospheric plate moves over the hotspot • Creates a row of volcanoes progress ...
... • Transform plate boundaries occur between segments of the mid-ocean ridge • Can also occur on land (ex: San Andreas Fault) Hotspots and plate tectonics • Hotspots are stationary and have abundant volcanic activity • The lithospheric plate moves over the hotspot • Creates a row of volcanoes progress ...
Plate tectonics theory
... The plate tectonics theory is a theory that explains how the earth’s crust is split into several plates that drift upon the mantel. On the edge of the plates the plates move together and away from each other and by doing so they either push magma to the surface, creating new land, or push solid rock ...
... The plate tectonics theory is a theory that explains how the earth’s crust is split into several plates that drift upon the mantel. On the edge of the plates the plates move together and away from each other and by doing so they either push magma to the surface, creating new land, or push solid rock ...
plate tectonics test
... Continental crust is always lighter. The long series of Peru-Chile Trenches off the west coast of South America is formed by the oceanic crust of the Nazca plate subducting beneath the continental crust of the South American plate. Ocean trenches can also be formed when two plates carrying oceanic c ...
... Continental crust is always lighter. The long series of Peru-Chile Trenches off the west coast of South America is formed by the oceanic crust of the Nazca plate subducting beneath the continental crust of the South American plate. Ocean trenches can also be formed when two plates carrying oceanic c ...
Chapter 1 The Growth of Oceanography
... • Continental margins are the submerged edges of the continents and consist of massive wedges of sediment eroded from the land and deposited along the continental edge. The continental margin can be divided into three parts: the Continental shelf, the Continental slope, and the Continental rise. • D ...
... • Continental margins are the submerged edges of the continents and consist of massive wedges of sediment eroded from the land and deposited along the continental edge. The continental margin can be divided into three parts: the Continental shelf, the Continental slope, and the Continental rise. • D ...
File
... c. Small mineral fragments located in the Earth’s core 11. Which of the following is accurate about the Earth? a. It contains oceanic, continental, and Jurassic crust b. It contains oceanic and continental crust c. It only contains continental crust 12. What is the relationship between temperature a ...
... c. Small mineral fragments located in the Earth’s core 11. Which of the following is accurate about the Earth? a. It contains oceanic, continental, and Jurassic crust b. It contains oceanic and continental crust c. It only contains continental crust 12. What is the relationship between temperature a ...
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.