Chapter 28 PPt
... each other. One result of two plates converging is subduction. A deep oceanic trench marks the boundary between a subducting and an overriding plate at a convergent boundary. ...
... each other. One result of two plates converging is subduction. A deep oceanic trench marks the boundary between a subducting and an overriding plate at a convergent boundary. ...
Geology study cards
... compared to a continental plate. An ocean (spin hands in a circular motion) plate can push under a continental plate through the process of subduction. ...
... compared to a continental plate. An ocean (spin hands in a circular motion) plate can push under a continental plate through the process of subduction. ...
Layers of the Earth PowerPoint
... due to the fact that their energy is being converted into kinetic energy (the energy of movement). Once these molecules spread out, their volume increases causing their density to decrease. Therefore, the hot liquid floats to the top and the cooler water, which has decreased in volume and increased ...
... due to the fact that their energy is being converted into kinetic energy (the energy of movement). Once these molecules spread out, their volume increases causing their density to decrease. Therefore, the hot liquid floats to the top and the cooler water, which has decreased in volume and increased ...
1 Crustal Structure, Isostasy, and Rheology Introduction This lecture
... crust is provided. The emphasis is on layer thickness and densities and there is little discussion of composition. The second and third topics are the vertical and horizontal force balances due to variation in crustal thickness. The vertical force balance, isostasy, provides a remarkably accurate de ...
... crust is provided. The emphasis is on layer thickness and densities and there is little discussion of composition. The second and third topics are the vertical and horizontal force balances due to variation in crustal thickness. The vertical force balance, isostasy, provides a remarkably accurate de ...
Snack Tectonics-Honors
... How did model 2 demonstrate subduction? What is subduction? Why is the oceanic plate subducted? What happened between the graham crackers in the third model? What features are formed when 2 continental plates converge? What happened between the graham crackers in the fourth model? Did they move easi ...
... How did model 2 demonstrate subduction? What is subduction? Why is the oceanic plate subducted? What happened between the graham crackers in the third model? What features are formed when 2 continental plates converge? What happened between the graham crackers in the fourth model? Did they move easi ...
Template - 2 Round J..
... What do the oceanic and continental crust as well as the upper mantle make up? ...
... What do the oceanic and continental crust as well as the upper mantle make up? ...
3rd Term Exam 8th Grade Study Guide
... A. The plates will rub against each other, C. causing shearing and creating fault lines in the interior of the plates B. The plates will rub against each other, D. causing one plate to subduct underneath the other plate and forming a deep trench along the boundary. ...
... A. The plates will rub against each other, C. causing shearing and creating fault lines in the interior of the plates B. The plates will rub against each other, D. causing one plate to subduct underneath the other plate and forming a deep trench along the boundary. ...
Unit 2: Plate Tectonics Test Review
... New ocean floor is added at ___ boundaries, where the sea floor spreads apart. ...
... New ocean floor is added at ___ boundaries, where the sea floor spreads apart. ...
Unit 2 Review
... New ocean floor is added at ___ boundaries, where the sea floor spreads apart. ...
... New ocean floor is added at ___ boundaries, where the sea floor spreads apart. ...
Click www.ondix.com to visit our student-to
... California may end up where Vancouver is, today. One of the most prominent signs that molten material resides below the crust and mantle is the display of volcanoes. Magma seeks out weak spots on the crust where it could seep out. Volcanoes are mostly present at fault lines especially at the ocean r ...
... California may end up where Vancouver is, today. One of the most prominent signs that molten material resides below the crust and mantle is the display of volcanoes. Magma seeks out weak spots on the crust where it could seep out. Volcanoes are mostly present at fault lines especially at the ocean r ...
Continental Drift and Sea Floor Spreading
... • Continental drift is a theory explaining how continents move over time • Mountains are created in random places on earth by random forces • All volcanoes are created by plates colliding • The oldest crust on Earth is found under the ocean ...
... • Continental drift is a theory explaining how continents move over time • Mountains are created in random places on earth by random forces • All volcanoes are created by plates colliding • The oldest crust on Earth is found under the ocean ...
Document
... • plates move about 5 cm per year • Plate movement is powered by: – downward pull of descending plates leading edge – friction of asthenosphere convection currents – outward push of new seafloor at spreading centers ...
... • plates move about 5 cm per year • Plate movement is powered by: – downward pull of descending plates leading edge – friction of asthenosphere convection currents – outward push of new seafloor at spreading centers ...
Plate Tectonics: What Happens when Plates Collide
... As the 12 major plates of the earth’s crust move due to the convection of heated magma in the mantle, this causes many events. Where two plates slide past one another laterally enormous amounts of built up pressure is released in the form of earthquakes. This is illustrated by the TRANSFORM fault ab ...
... As the 12 major plates of the earth’s crust move due to the convection of heated magma in the mantle, this causes many events. Where two plates slide past one another laterally enormous amounts of built up pressure is released in the form of earthquakes. This is illustrated by the TRANSFORM fault ab ...
plate tectonic theory
... If oceanic crust is being destroyed, where do you think it goes? What happens to the crust after it is destroyed? Where does new crust come from? Think about these questions, and then read on to learn the answers! Scientists in the Spotlight: Harry Hess and Seafloor Spreading Harry Hess was a geologi ...
... If oceanic crust is being destroyed, where do you think it goes? What happens to the crust after it is destroyed? Where does new crust come from? Think about these questions, and then read on to learn the answers! Scientists in the Spotlight: Harry Hess and Seafloor Spreading Harry Hess was a geologi ...
Seafloor Features and Plate Tectonics Workshop
... Seafloor Features and Plate Tectonics Teacher Professional Development Workshop June 14 – 16, 2016 from 9:00 AM – 3:00 PM College of Charleston ...
... Seafloor Features and Plate Tectonics Teacher Professional Development Workshop June 14 – 16, 2016 from 9:00 AM – 3:00 PM College of Charleston ...
day 1 Objective and HW
... Learning Target: Evaluate evidence of the past and current movements of continental and oceanic crust and the theory of plate tectonics to explain the ages of crustal rocks. Success Criteria: Identify the three general categories of plate boundaries recognized by scientists: convergent, divergent, ...
... Learning Target: Evaluate evidence of the past and current movements of continental and oceanic crust and the theory of plate tectonics to explain the ages of crustal rocks. Success Criteria: Identify the three general categories of plate boundaries recognized by scientists: convergent, divergent, ...
Layer Earth:Stress - Jamestown School District
... Sorenson Video decompressor are needed to see this picture. ...
... Sorenson Video decompressor are needed to see this picture. ...
Mena Pfest - Mrs. Pfest`s Science Place
... called plates that extend down into the solid part of the upper mantle. Earth’s plates continue to move, resulting in earthquakes Earthquakes and volcanoes occur more frequently at plate boundaries. The concentration of volcanoes and earthquakes in particular areas on earth supports the theory of pl ...
... called plates that extend down into the solid part of the upper mantle. Earth’s plates continue to move, resulting in earthquakes Earthquakes and volcanoes occur more frequently at plate boundaries. The concentration of volcanoes and earthquakes in particular areas on earth supports the theory of pl ...
1.3 Japan and South-East Asia
... distribution of volcanoes. Is this a strong relationship? Explain. ...
... distribution of volcanoes. Is this a strong relationship? Explain. ...
File
... A. The process of moving materials from their source to another location through weathering. B. The breaking down of rock soil and minerals. C. Magma coming up from the Earth’s mantle through openings in the crust. 2. Wind carrying abrasive materials blows against a rock formation, wearing it down o ...
... A. The process of moving materials from their source to another location through weathering. B. The breaking down of rock soil and minerals. C. Magma coming up from the Earth’s mantle through openings in the crust. 2. Wind carrying abrasive materials blows against a rock formation, wearing it down o ...
Plate Tectonics A . Alfred Wegner 1. Continental drift hypothesis a
... 2. Oceanic ridge – seafloor that is elevated along well developed divergent boundaries 3. Rift valleys – deep faulted structures found along the axes of some segments 4. Seafloor spreading – The process in which the ocean floor is extended when two plates move apart, forming a ...
... 2. Oceanic ridge – seafloor that is elevated along well developed divergent boundaries 3. Rift valleys – deep faulted structures found along the axes of some segments 4. Seafloor spreading – The process in which the ocean floor is extended when two plates move apart, forming a ...
Unit Rationale - (Secondary) Teacher
... mathematician and scientist. I have always looked at the world with a sense of wonder and wanting to know more with every question that pops into my head. I want to inspire this interest and questioning nature in my students as it can enrich their lives in many ways. On the practical side promoting ...
... mathematician and scientist. I have always looked at the world with a sense of wonder and wanting to know more with every question that pops into my head. I want to inspire this interest and questioning nature in my students as it can enrich their lives in many ways. On the practical side promoting ...
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.