Earth is composed of 3 layers
... earth’s surface -broken into more than a dozen slabs of rock called plates that rest on layer of the upper mantle -these plates carry earth’s oceans & continents ...
... earth’s surface -broken into more than a dozen slabs of rock called plates that rest on layer of the upper mantle -these plates carry earth’s oceans & continents ...
An Introduction to the Seafloor and Plate Tectonics
... relative to others: divergent, convergent, and transform (or strike-slip) margins. The following diagram shows the movement of one plate with respect to another for the three types of margins, and plates are bound on all sides by one or more of these types: Divergent Margins ...
... relative to others: divergent, convergent, and transform (or strike-slip) margins. The following diagram shows the movement of one plate with respect to another for the three types of margins, and plates are bound on all sides by one or more of these types: Divergent Margins ...
Name
... the stability of a slope can be caused by; an absence of vegetation, erosion of the toe of a slope by running water, or weakening of the slope by water saturation from snowmelt or heavy rains. The shaking of the ground by earthquakes or volcanic activity can often trigger landslides. ...
... the stability of a slope can be caused by; an absence of vegetation, erosion of the toe of a slope by running water, or weakening of the slope by water saturation from snowmelt or heavy rains. The shaking of the ground by earthquakes or volcanic activity can often trigger landslides. ...
Continental drift and plate tectonics
... floor sinks back into the mantle through deep-ocean trenches. Deep-ocean trenches are deep underwater canyons formed where the oceanic crust bends downward. ...
... floor sinks back into the mantle through deep-ocean trenches. Deep-ocean trenches are deep underwater canyons formed where the oceanic crust bends downward. ...
Convection in the Mantle and The Theory of Plate Tectonics
... plates (pieces of the lithosphere) move apart. • Most divergent boundaries occur along a midocean ridge where sea-floor spreading occurs. ...
... plates (pieces of the lithosphere) move apart. • Most divergent boundaries occur along a midocean ridge where sea-floor spreading occurs. ...
Causes of Plate Motion - Downey Unified School District
... Section Assessment 2. How might a convection current cause a convergent boundary? A sinking region of a mantle convection current could suck an oceanic plate downward into a subduction zone. The weight of a subducting plate helps pull the trailing lithosphere into the subduction zone in a process ca ...
... Section Assessment 2. How might a convection current cause a convergent boundary? A sinking region of a mantle convection current could suck an oceanic plate downward into a subduction zone. The weight of a subducting plate helps pull the trailing lithosphere into the subduction zone in a process ca ...
Mountain Building Mountain Building
... • Several hypotheses have been proposed for the formations of Earth’s mountain belts • None explain all observations as well as plate tectonics • Most – but not all – mountain building occurs at convergent plate boundaries ...
... • Several hypotheses have been proposed for the formations of Earth’s mountain belts • None explain all observations as well as plate tectonics • Most – but not all – mountain building occurs at convergent plate boundaries ...
8.3 Causes of Plate Movements
... causes responsible for the movement of tectonic plates: Convection currents in the upper mantle Ridge push Slab Pull ...
... causes responsible for the movement of tectonic plates: Convection currents in the upper mantle Ridge push Slab Pull ...
The Theory of Plate Tectonics
... The edges of the plates meet at lines called plate boundaries. When rocks slip past each other along these boundaries faults, or breaks in the Earth’s crust occur. Three types of boundaries: transform boundary – place where two plates slip past each other, moving in opposite directions (frequent Ear ...
... The edges of the plates meet at lines called plate boundaries. When rocks slip past each other along these boundaries faults, or breaks in the Earth’s crust occur. Three types of boundaries: transform boundary – place where two plates slip past each other, moving in opposite directions (frequent Ear ...
Printer-friendly Version - Solid Earth Discussions
... temperature but the hot one does not, then the heat flow through it does not change. Surely the temperature difference across the engine changes, and that alters the rate of heat flow. p.140 l.25 Why "steady and sustained force", when the previous paragraphs explains why Swedan thinks it’s unsteady? ...
... temperature but the hot one does not, then the heat flow through it does not change. Surely the temperature difference across the engine changes, and that alters the rate of heat flow. p.140 l.25 Why "steady and sustained force", when the previous paragraphs explains why Swedan thinks it’s unsteady? ...
KEY - UNIT 7 REVIEW 1. Describe Pangaea. When all continents
... KEY - UNIT 7 REVIEW 1. Describe Pangaea. When all continents were fused together into one super continent 2. Describe Continental Drift. When continents broke away from being one land mass and moved to where they are currently 3. Who is given credit for both Pangaea and Continental Drift? What evid ...
... KEY - UNIT 7 REVIEW 1. Describe Pangaea. When all continents were fused together into one super continent 2. Describe Continental Drift. When continents broke away from being one land mass and moved to where they are currently 3. Who is given credit for both Pangaea and Continental Drift? What evid ...
Document
... in mid 1900s), one of the first to suggest that convection of the "substratum" under the continents and oceans could provide the missing mechanism for Wegener's continental drift: upwelling beneath mid-ocean ridges and descent beneath oceanic trenches Hugo Benioff: California geophysicist, had a kna ...
... in mid 1900s), one of the first to suggest that convection of the "substratum" under the continents and oceans could provide the missing mechanism for Wegener's continental drift: upwelling beneath mid-ocean ridges and descent beneath oceanic trenches Hugo Benioff: California geophysicist, had a kna ...
Plate Tectonics Summary - Leigh
... The locations of the plate boundaries can be seen by mapping the locations of the Earth’s volcanoes and earthquakes. Divergent plate boundaries are where two plates move apart. Early on this divergence creates a rift zone (or rift valley on land) where the surface breaks and drops as the two plates ...
... The locations of the plate boundaries can be seen by mapping the locations of the Earth’s volcanoes and earthquakes. Divergent plate boundaries are where two plates move apart. Early on this divergence creates a rift zone (or rift valley on land) where the surface breaks and drops as the two plates ...
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... • Continental slope: steep, boundary between continental and oceanic crust. Submarine canyons. To 3,000 - 4,000 M depth. • Continental rise: sediment accumulation. Turbidity currents. Mud and sand. • Abyssal plain: 4,500 - 6,000 M depth. Oceanic crust below. Mostly flat and soft sediment. Mangane ...
... • Continental slope: steep, boundary between continental and oceanic crust. Submarine canyons. To 3,000 - 4,000 M depth. • Continental rise: sediment accumulation. Turbidity currents. Mud and sand. • Abyssal plain: 4,500 - 6,000 M depth. Oceanic crust below. Mostly flat and soft sediment. Mangane ...
Geology :: 9. Convergent and transform fault plate margins
... be brittle. With a rapid sinking rate of 8 cm/ year, calculations show that the lithosphere retains some brittle properties down to a depth of 700 km. This is probably the reason that a few earthquake foci are as deep as 700 km. ...
... be brittle. With a rapid sinking rate of 8 cm/ year, calculations show that the lithosphere retains some brittle properties down to a depth of 700 km. This is probably the reason that a few earthquake foci are as deep as 700 km. ...
Plate Tectonics Study Guide – Key
... Why is there a high risk of earthquakes along the Pacific Coast of the United States? What landform is formed on top of a mantle plume hot spot? Which is more dense: old oceanic crust or young oceanic crust? Why? What are the two types of crust? What is an island arc and how is it related to plate t ...
... Why is there a high risk of earthquakes along the Pacific Coast of the United States? What landform is formed on top of a mantle plume hot spot? Which is more dense: old oceanic crust or young oceanic crust? Why? What are the two types of crust? What is an island arc and how is it related to plate t ...
Earth and Space Science 2015 Semester 2 Exam Review Part 1 Convection
... Compare the three types of plate boundaries. ...
... Compare the three types of plate boundaries. ...
Plate Tectonics Study guide - Grants Pass School District 7
... 5. _____ Process when the oceanic plates slide under continental plate. ...
... 5. _____ Process when the oceanic plates slide under continental plate. ...
Chapter 3: Plate Tectonics
... through subduction and sink into the mantle. • Oceanic-continental collision: because oceanic crust is more dense, it can be subducted and cause the continental crust to bend and fold, making mountains and/or volcanoes. • Continental-continental collision: the two landmasses collide, bend, fold, etc ...
... through subduction and sink into the mantle. • Oceanic-continental collision: because oceanic crust is more dense, it can be subducted and cause the continental crust to bend and fold, making mountains and/or volcanoes. • Continental-continental collision: the two landmasses collide, bend, fold, etc ...
Chapter 6: Plate Tectonics
... surface features o They also interact with other Earth systems to affect Earth’s climate 6.2 Structure of Earth Indirect studies of Earth’s interior (such as earthquake monitoring) have provided insight as to how plate tectonic processes work o The Mohorovicic discontinuity (“Moho”), the boundary ...
... surface features o They also interact with other Earth systems to affect Earth’s climate 6.2 Structure of Earth Indirect studies of Earth’s interior (such as earthquake monitoring) have provided insight as to how plate tectonic processes work o The Mohorovicic discontinuity (“Moho”), the boundary ...
– Circle the response that best answers the question.
... If the statement is true, write true. If it is false, change the underlined word or words to make the statement true. 11 Continental crust is made of rocks such as granite. 12 Slow movements of mantle rock called radiation transfer heat in the mantle. 13 The single landmass that broke apart 250 mil ...
... If the statement is true, write true. If it is false, change the underlined word or words to make the statement true. 11 Continental crust is made of rocks such as granite. 12 Slow movements of mantle rock called radiation transfer heat in the mantle. 13 The single landmass that broke apart 250 mil ...
9.4 Testing Plate Tectonics 9.5 Mechanisms of Plate Motions
... • Scientists found a close link between deep-focus earthquakes and ocean trenches. • The absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory. ...
... • Scientists found a close link between deep-focus earthquakes and ocean trenches. • The absence of deep-focus earthquakes along the oceanic ridge system was shown to be consistent with the new theory. ...
PLATE TECTONICS He thought that continents were an only piece
... • Transform boundaries: the San Andreas Fault zone in California, that it connects the East Pacific Rise with the South Gord. Plate tectonic and ocean trenches have in common the process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate called s ...
... • Transform boundaries: the San Andreas Fault zone in California, that it connects the East Pacific Rise with the South Gord. Plate tectonic and ocean trenches have in common the process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate called s ...
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.