Name - www .alexandria .k12 .mn .us
... 8. Plate Tectonics Theory has been widely accepted since the ___________’s. It states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly __________________________. 9. Click on “Con ...
... 8. Plate Tectonics Theory has been widely accepted since the ___________’s. It states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly __________________________. 9. Click on “Con ...
Mid-Ocean Ridges
... Deep OceanTrenches occur where two oceanic plates meet; the denser of the two plates will subduct and melt. The magma from the melted palte will rise back to the surface and form an Island Arc Island arc’s are chains of volcanic islands that form on the top plate, parallel to a deep ocean trench. EX ...
... Deep OceanTrenches occur where two oceanic plates meet; the denser of the two plates will subduct and melt. The magma from the melted palte will rise back to the surface and form an Island Arc Island arc’s are chains of volcanic islands that form on the top plate, parallel to a deep ocean trench. EX ...
Studyguide_PTtest
... ~ The theory Harry Hess put forth – What did he find? What other evidence added to the idea that the seafloor was spreading? (new crust formed at mid-ocean ridge – younger closer to ridge, older farther away; trenches & subduction zones; magnetic striping of seafloor) ~ The 4 basic layers of the Ear ...
... ~ The theory Harry Hess put forth – What did he find? What other evidence added to the idea that the seafloor was spreading? (new crust formed at mid-ocean ridge – younger closer to ridge, older farther away; trenches & subduction zones; magnetic striping of seafloor) ~ The 4 basic layers of the Ear ...
Practice Questions: Plate Tectonics
... 11. Which observation about the Mid-Atlantic Ridge region provides the best evidence that the seafloor has been spreading for millions of years? A) The bedrock of the ridge and nearby seafloor is igneous rock. B) The ridge is the location of irregular volcanic eruptions. C) Several faults cut acros ...
... 11. Which observation about the Mid-Atlantic Ridge region provides the best evidence that the seafloor has been spreading for millions of years? A) The bedrock of the ridge and nearby seafloor is igneous rock. B) The ridge is the location of irregular volcanic eruptions. C) Several faults cut acros ...
Plate Boundaries - Clinton Public Schools
... develop on both sides of the rift; the central blocks slide ...
... develop on both sides of the rift; the central blocks slide ...
subduction dynamics and mantle tomography beneath japan
... shown on the map represent the location of the three cross-sections. 2.3 Numerical method and model setup Mantle convection is governed by the coupling between fluid flow and energy transport and the numeric calculations are performed in a 3-D cut through a sphere on a non-deforming grid, by solving ...
... shown on the map represent the location of the three cross-sections. 2.3 Numerical method and model setup Mantle convection is governed by the coupling between fluid flow and energy transport and the numeric calculations are performed in a 3-D cut through a sphere on a non-deforming grid, by solving ...
Sinking Slabs and Convection Connections
... if any, correlation between hot spots and plate direction. For a relatively small number of hot spots on spreading ridges, the plate moves away from the hot spots (e.g., Iceland, Galapagos, or Afar at the base of the Red Sea). Many more are distributed beneath oceanic plates or continents. Geologic ...
... if any, correlation between hot spots and plate direction. For a relatively small number of hot spots on spreading ridges, the plate moves away from the hot spots (e.g., Iceland, Galapagos, or Afar at the base of the Red Sea). Many more are distributed beneath oceanic plates or continents. Geologic ...
Chapter 9 Plate Tectonics
... accurately showed the shapes of the continents. Once people had these accurate maps, they began to notice that some continents fit together like pieces of a puzzle In 1915, Alfred Wegener proposed the hypothesis of continental drift Continental Drift all the continents had at one time been j ...
... accurately showed the shapes of the continents. Once people had these accurate maps, they began to notice that some continents fit together like pieces of a puzzle In 1915, Alfred Wegener proposed the hypothesis of continental drift Continental Drift all the continents had at one time been j ...
Document
... The Theory of Plate Tectonics • The Earth’s is constantly changing • The Earth’s crust is divided into 8 large plates (and several small plates) • Almost all major earthquake or volcano activity occurs along the plate boundaries • Because each plate moves as a unit, the interiors of the plates are ...
... The Theory of Plate Tectonics • The Earth’s is constantly changing • The Earth’s crust is divided into 8 large plates (and several small plates) • Almost all major earthquake or volcano activity occurs along the plate boundaries • Because each plate moves as a unit, the interiors of the plates are ...
Ch02%20outline
... Oceanic-oceanic convergence • When two oceanic slabs converge, one descends beneath the other • Often forms volcanoes on the ocean floor • If the volcanoes emerge as islands, a volcanic island arc is formed (Japan, Aleutian islands, Tonga islands) ...
... Oceanic-oceanic convergence • When two oceanic slabs converge, one descends beneath the other • Often forms volcanoes on the ocean floor • If the volcanoes emerge as islands, a volcanic island arc is formed (Japan, Aleutian islands, Tonga islands) ...
The Seafloor
... – Hot water dissolves materials as it passes through rock – Black color: finegrained metals that precipitate in “cool” ocean water – 400°C sulfurous H2O – Chemosynthesis • Bacteria feed on H2S Hydrothermal vents at a mid-ocean ridge. ...
... – Hot water dissolves materials as it passes through rock – Black color: finegrained metals that precipitate in “cool” ocean water – 400°C sulfurous H2O – Chemosynthesis • Bacteria feed on H2S Hydrothermal vents at a mid-ocean ridge. ...
... plates. Be sure to explain where the energy comes from to make this process happen. The inner core is so hot that it heats up the other layers. The “puttylike” layer of the asthenosphere slowly moves – as particles get heated from core they spread out & become less dense – and they rise. They then c ...
Handout 1 (2-3) pink Chapter 10 Section 2 Directed Reading Pages
... 9. In addition to volcanoes, what also occurs frequently in the Pacific Ring of Fire? TYPES OF PLATE BOUNDARIES (page 249-251) 10. What happens to magma at divergent boundaries? ...
... 9. In addition to volcanoes, what also occurs frequently in the Pacific Ring of Fire? TYPES OF PLATE BOUNDARIES (page 249-251) 10. What happens to magma at divergent boundaries? ...
california – geologic history and
... A. Geologic movements developing great North American Cordillera 1. Mountain chain extending from Alaska to Guatemala Plate tectonics A. A general theory describing movements of continental and oceanic crustal plates B. Earth’s Lithosphere (composed of crust and upper mantle materials) broken into l ...
... A. Geologic movements developing great North American Cordillera 1. Mountain chain extending from Alaska to Guatemala Plate tectonics A. A general theory describing movements of continental and oceanic crustal plates B. Earth’s Lithosphere (composed of crust and upper mantle materials) broken into l ...
Vocabulary Activity - Stout Middle School
... Use the clues to help you unscramble the words given. Write your answer in the spaces provided. 1. the tectonic process that takes place along mid-ocean ridges: AES RFOOL REGIDANSP ...
... Use the clues to help you unscramble the words given. Write your answer in the spaces provided. 1. the tectonic process that takes place along mid-ocean ridges: AES RFOOL REGIDANSP ...
!GLG 101-Illustrated Vocabulary-Chapter 18 !Plate Tectonics
... *along an oceanic ridge where seafloor spreading is occurring, lava emerges where the oceanic plates are pulling apart and opening up fissures. !subduction zone *when two crustal plates converge, one crustal plate often dives beneath the other at an angle between 30 degrees and 60 degrees from the h ...
... *along an oceanic ridge where seafloor spreading is occurring, lava emerges where the oceanic plates are pulling apart and opening up fissures. !subduction zone *when two crustal plates converge, one crustal plate often dives beneath the other at an angle between 30 degrees and 60 degrees from the h ...
Chapters 1(review)
... What is a “marine magnetic anomaly?” In what ways do these anomalies help provide evidence to support plate tectonics? How can we use these anomalies to determine the velocity of a plate? **(see question 8 under “Questions for Review” on page 408.)** ...
... What is a “marine magnetic anomaly?” In what ways do these anomalies help provide evidence to support plate tectonics? How can we use these anomalies to determine the velocity of a plate? **(see question 8 under “Questions for Review” on page 408.)** ...
Structure of the Earth
... Glossopteris – found in Africa, Australia, India, South America and Antarctic ...
... Glossopteris – found in Africa, Australia, India, South America and Antarctic ...
Mechanisms of Plate Motion
... • Hot spots are created by mantle plumes. • Mantle plumes are hot currents that rise all the way from the core through the mantle. • Mantle plumes can come up under the crust and burn their way through to create hot spot volcanoes. ...
... • Hot spots are created by mantle plumes. • Mantle plumes are hot currents that rise all the way from the core through the mantle. • Mantle plumes can come up under the crust and burn their way through to create hot spot volcanoes. ...
Convergent plate boundaries
... in common - plate collisions! Take a look at the differences between the three examples on this page. ...
... in common - plate collisions! Take a look at the differences between the three examples on this page. ...
I. Divergent Boundaries A. Moving apart B. Sea Floor spreading at
... d. Recorded in rocks as they form at oceanic ridges 1) Record across ocean ridges confirms seafloor spreading 2) new basalt added to ocean floor, equal amounts to edges of plates 3) Paleomagnetic time scale shows rates of spreading a) North Atlantic Ridge is spreading about 2 cm/year b) East Pacific ...
... d. Recorded in rocks as they form at oceanic ridges 1) Record across ocean ridges confirms seafloor spreading 2) new basalt added to ocean floor, equal amounts to edges of plates 3) Paleomagnetic time scale shows rates of spreading a) North Atlantic Ridge is spreading about 2 cm/year b) East Pacific ...
Name: - Cobb Learning
... 8. Plate Tectonics Theory has been widely accepted since the ___________’s. It states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly _________________. 9. Continents over time B ...
... 8. Plate Tectonics Theory has been widely accepted since the ___________’s. It states that Earth’s outer layer or _________________ is broken up into ________________. These plates hold ______________________ and _____________________. They are constantly _________________. 9. Continents over time B ...
10. Crustal Structure of the Japan Trench: The Effect of Subduction
... continental crust occurs because of the subduction process, causing a landward retreat of the leading edge of the continental margin (Kulm et al., 1977). The leading edge of the continental block lies somewhere between profiles P-7 and P-8. ...
... continental crust occurs because of the subduction process, causing a landward retreat of the leading edge of the continental margin (Kulm et al., 1977). The leading edge of the continental block lies somewhere between profiles P-7 and P-8. ...
Plate Tectonics Wholly, completely
... a) Oceanic-Continental Convergence When an oceanic plate pushes into and subducts under a continental plate, the overriding continental plate is lifted up and a mountain ________ is created. Even though the oceanic plate as a whole sinks smoothly and continuously into the subduction trench, the deep ...
... a) Oceanic-Continental Convergence When an oceanic plate pushes into and subducts under a continental plate, the overriding continental plate is lifted up and a mountain ________ is created. Even though the oceanic plate as a whole sinks smoothly and continuously into the subduction trench, the deep ...
Plate_tectonics_Ss_2014
... a) Oceanic-Continental Convergence When an oceanic plate pushes into and subducts under a continental plate, the overriding continental plate is lifted up and a mountain ________ is created. Even though the oceanic plate as a whole sinks smoothly and continuously into the subduction trench, the deep ...
... a) Oceanic-Continental Convergence When an oceanic plate pushes into and subducts under a continental plate, the overriding continental plate is lifted up and a mountain ________ is created. Even though the oceanic plate as a whole sinks smoothly and continuously into the subduction trench, the deep ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.