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Plate Tectonics
Plate Tectonics

... underwater mountains that have a deep crack, called a rift valley, running through their center, known as the midocean ridges. A great deal of volcanic activity occurs at the mid-ocean ridges. Lava erupts from the rift valley. The hardened lava forms new ocean floor. In the 1960’s Harry Hess propose ...
Plate Tectonics
Plate Tectonics

... that have a deep crack, called a rift valley, running through their center, known as the mid-ocean ridges. A great deal of volcanic activity occurs at the mid-ocean ridges. Lava erupts from the rift valley. The hardened lava forms new ocean floor. This process is known as sea-floor spreading. ...
Modelessayplatetectheory 18.46KB 2017-03-29
Modelessayplatetectheory 18.46KB 2017-03-29

... Andreas fault – a visible crease in the Earth’s crust as the Pacific plate drags alongside the North American plate at a faster rate, leading to regular shallow focus earthquakes which threaten the cities of San Francisco and Los Angeles. Perhaps if we had formulated the theory of plate tectonics ea ...
Tectonics & Sedimentation
Tectonics & Sedimentation

... model is probable explanation, with a "taffy-like" thinning of the lower crust and the upper crust faulting in many places to produce the rift valley. This contrasts to "simple shear" model wherein a single, large detachment fault controls continental rifting. ...
Student Pre/Post Test - College of Arts and Sciences
Student Pre/Post Test - College of Arts and Sciences

... The youngest volcanic rock is most likely found at which location? a. b. c. d. ...
Student Google Slides Presentation
Student Google Slides Presentation

... tectonic plates. 2. Movement happens over millions of years and it’s called continental drift. 250 million years ago, all the continents were joined together to make a giant continent called Pangaea. 3. The plates’ movement happens very slowly. 4. The Red Sea was formed where the African and Arabian ...
GEOL 10 Environmental Geology Activity 5 Plate Boundaries and
GEOL 10 Environmental Geology Activity 5 Plate Boundaries and

... We will use the map Plate Boundaries (Bird, 2003). You will also benefit with a calculator and color pencils.  Part 1:  Plate Boundaries of the Earth, Mollweide Projection.  1. Identify the major plate boundaries on the chart using the following colors and symbols:  a. Divergent plate boundary (arro ...
What is the Earth made of?
What is the Earth made of?

... moving towards each other. This is usually a continental plate (a plate carrying land) and an oceanic plate (a plate carrying ocean). The oceanic plate is denser than the continental plate so, as they move together, the oceanic plate is forced underneath the continental plate. As the oceanic plate i ...
Plate Tectonics
Plate Tectonics

... • 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) ...
test - Scioly.org
test - Scioly.org

... and   ocean   floors.  a. Eustasy  b. Glacioisostasy  c. staticotasy  d. Isostasy  46.    T hree   principal   models   of   isostasy   are   used.    In   the   _____________   model   different   topographic   heights   are  accommodated   by   changes   in   cr ustal   thickness,   in   which   t ...
10-2 Directed Reading
10-2 Directed Reading

... 53. Is ridge push the main driving force of plate motion? Along with ridge push, what did scientists study for clues about forces that drive plate motion? _______________________________________________________________ _______________________________________________________________ _________________ ...
Interactive Dynamic Earth ANSWERS
Interactive Dynamic Earth ANSWERS

... 55. According to the website, when was the most recent “major event” along this fault? Click on “Plate Interactions Challenge.” Participate in the challenges as directed on the screen. After this, you will be finished for the day. ...
Rubrics for Earth Stations
Rubrics for Earth Stations

... *each boundary is accurately represented (6) _____ *each boundary is appropriately labeled (6) _____ *informative, neat & worthy of display (6) _____ *explanation relating extension, compression, & shearing to each boundary (3) _____ *description relating faulting, folding, & uplift to the movement ...
Plate Tectonics - TheVirtualNeal
Plate Tectonics - TheVirtualNeal

... creations. Some sound more useful than others. Each of the clues below indicates a two-word rhyming answer that describes one of professor Bankston’s creations. Write the words in the blank. a. the amount of force put on a given material, and a machine for ...
cos.anu.edu.au • Boxing clever • When push comes to shove
cos.anu.edu.au • Boxing clever • When push comes to shove

... lithosphere below the overlying plate, induces the generation of magmas at depth. These magmas rise to the earth’s surface where they form volcanic activity at the earth’s surface. Plate subduction is the process causing volcanism around the Pacific rim today. This process also has the side effect o ...
Ocean Basins
Ocean Basins

... a) two continental plates collide, form high mountain ranges e.g., Himalayas b) two ocean plates collide, form island arc and submarine trench e.g., Aleutian Islands, Aleutian Trench c) ocean and continental plates collide, form mountains and trench e.g., Andes and Peru-Chile Trench Subduction occur ...
PPT
PPT

... a) two continental plates collide, form high mountain ranges e.g., Himalayas b) two ocean plates collide, form island arc and submarine trench e.g., Aleutian Islands, Aleutian Trench c) ocean and continental plates collide, form mountains and trench e.g., Andes and Peru-Chile Trench Subduction occur ...
Crustal Scale Interpretation
Crustal Scale Interpretation

... such as western South America. We can this subduction erosion. It erodes the continental crust and returns some of the crust into the mantle. ...
Name: Section: Date: Plate Tectonics Learning Objectives
Name: Section: Date: Plate Tectonics Learning Objectives

... Name: _______________________________ ...
Phet Plate Tectonics Inquiry
Phet Plate Tectonics Inquiry

... Name: _______________________________ ...
Reading Science!
Reading Science!

... Transform boundaries occur when two plates slide horizontally past one another. Transform boundaries are different than the other boundary types. They do not usually form mountains, volcanoes, or trenches. However, movement along transform boundaries can trigger earthquakes. The San Andreas Fault in ...
PowerPoint Presentation - The Earth, Plate Tectonics
PowerPoint Presentation - The Earth, Plate Tectonics

... There are a dozen large lithospheric plates (smaller plates not shown). Some plates have continents; some don’t. All are in motion. Question: What evidence is there for these plate boundaries? ...
STRUCTURAL GEOLOGY Continental Drift and Seafloor Spreading
STRUCTURAL GEOLOGY Continental Drift and Seafloor Spreading

... The fault plane is the surface where the break has occurred. The hanging wall is the rock on the upper side of the fault plane and the footwall is the rock on the underside of the fault plane. Up thrown rock has moved upward and down thrown rock has moved down. The three types of faults are normal, ...
Weathering, Erosion, and Plate Tectonics
Weathering, Erosion, and Plate Tectonics

... volumes of heated and molten rock moving around the earth’s interior form massive solid plates that move extremely slowly across the earth’s surface.  Tectonic plates: huge rigid plates that are moved with convection cells or currents by floating on magma or molten rock. ...
File - Ian Whaley Dillman EES
File - Ian Whaley Dillman EES

... Roll your mouse over the image to find the definitions of the words below: Continental Crust - __The Earth’s crust that makes up the continents _____________ Mountain - ___A high and large mass of Earth that rises above the Earth’s surface with sloping sides__________________________________________ ...
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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.
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