Simulating Mantle Convection and Seismic Anisotropy with Data
... well to 1000 km depth, especially in the northern part of South America that has a better seismic coverage than the southern part. ...
... well to 1000 km depth, especially in the northern part of South America that has a better seismic coverage than the southern part. ...
Plate Tectonics Vocabulary Word Search
... ______________ current - The driving force of plate tectonics in which hot, plastic like material from the mantle rises to the lithosphere, moves horizontally, cools and sinks back to the mantle. ...
... ______________ current - The driving force of plate tectonics in which hot, plastic like material from the mantle rises to the lithosphere, moves horizontally, cools and sinks back to the mantle. ...
Click here for the "Dynamic Earth Vocabulary"
... A zone where one tectonic plate moves under another tectonic plate at a convergent plate boundary. The denser plate always moves under the less dense plate. A deep, underwater trough (ditch) created by one plate subducting (moving beneath) another plate at a convergent boundary. A theory posed in 19 ...
... A zone where one tectonic plate moves under another tectonic plate at a convergent plate boundary. The denser plate always moves under the less dense plate. A deep, underwater trough (ditch) created by one plate subducting (moving beneath) another plate at a convergent boundary. A theory posed in 19 ...
Term and Lanform - Madison Public Schools
... Theory of Plate Tectonics Text pg. 202 - 205 Occurs at midocean ridges. Ridges are at a higher elevation than at the subduction zone. The oceanic lithosphere slides downhill due to the force of gravity as rock cools and becomes more dense. ...
... Theory of Plate Tectonics Text pg. 202 - 205 Occurs at midocean ridges. Ridges are at a higher elevation than at the subduction zone. The oceanic lithosphere slides downhill due to the force of gravity as rock cools and becomes more dense. ...
Unit 3: Forces Within - Lemon Bay High School
... Oceanic lithosphere is destroyed at __________________ . Plate Tectonics and The Nature of Volcanic Eruptions The thermal convection that drives plate motion is caused by _____________________ . A magma’s viscosity is directly related to its __________________ . As the temperature of lava increases, ...
... Oceanic lithosphere is destroyed at __________________ . Plate Tectonics and The Nature of Volcanic Eruptions The thermal convection that drives plate motion is caused by _____________________ . A magma’s viscosity is directly related to its __________________ . As the temperature of lava increases, ...
Intro to Earth
... theory did not adequately explain the forces that caused the plates to move Major breakthrough in the development of a complete theory of the earth’s dynamics occurred in the early 1960’s, when the topography of the ocean floors was mapped and magnetic and seismic characteristics were determined ...
... theory did not adequately explain the forces that caused the plates to move Major breakthrough in the development of a complete theory of the earth’s dynamics occurred in the early 1960’s, when the topography of the ocean floors was mapped and magnetic and seismic characteristics were determined ...
Topography of the Ocean Floor Notes
... • Produced by sea floor spreading at divergent plate boundaries ...
... • Produced by sea floor spreading at divergent plate boundaries ...
MB Chapter 02
... Plate Boundaries and Geologic Processes • The lithosphere is fragmented into fourteen major tectonic plates • Plates are moving across the Earth's surface in different directions and at different velocities. • Many geologic processes, such as plutonism, volcanism, and earthquakes result from the in ...
... Plate Boundaries and Geologic Processes • The lithosphere is fragmented into fourteen major tectonic plates • Plates are moving across the Earth's surface in different directions and at different velocities. • Many geologic processes, such as plutonism, volcanism, and earthquakes result from the in ...
Intro to Continenial Drift
... Mechanisms of Plate Motion Causes of Plate Motion Mantle Convection • Mantle plumes are masses of hotter-thannormal mantle material that ascend toward the surface, where they may lead to igneous activity. • The unequal distribution of heat within Earth causes the thermal convection in the mantle ...
... Mechanisms of Plate Motion Causes of Plate Motion Mantle Convection • Mantle plumes are masses of hotter-thannormal mantle material that ascend toward the surface, where they may lead to igneous activity. • The unequal distribution of heat within Earth causes the thermal convection in the mantle ...
Plate Tectonics - NagelBeelmanScience
... occurred. However the theory of a ‘super continent’ originally was not accepted by scientists. Continental drift was being discussed during the time Wegener introduced his Pangaea theory. ...
... occurred. However the theory of a ‘super continent’ originally was not accepted by scientists. Continental drift was being discussed during the time Wegener introduced his Pangaea theory. ...
Plate Tectonics
... •This type of volcanic cone is often found associated with other volcanoes, and commonly where plates have been completely subducted and the melted material is in its last gasps. ...
... •This type of volcanic cone is often found associated with other volcanoes, and commonly where plates have been completely subducted and the melted material is in its last gasps. ...
File
... 19. Using the key at the bottom of the map, name two tectonic features that can be found along the west coast of the United States. ...
... 19. Using the key at the bottom of the map, name two tectonic features that can be found along the west coast of the United States. ...
Learning Assessment #1
... provided with the handout. Also make sure that on your cross section you have labeled or indicated the following: • The names of the tectonic plates (place the name label them above the cross section and make sure you indicate with a vertical line the edges of the plate that extends from the plate b ...
... provided with the handout. Also make sure that on your cross section you have labeled or indicated the following: • The names of the tectonic plates (place the name label them above the cross section and make sure you indicate with a vertical line the edges of the plate that extends from the plate b ...
The Restless Earth
... • You have 10 seconds… to draw the 4 layers of the earth • You have 20 seconds… to give two differences between oceanic and continental crust • You have 30 seconds… to draw and label a destructive subduction margin ...
... • You have 10 seconds… to draw the 4 layers of the earth • You have 20 seconds… to give two differences between oceanic and continental crust • You have 30 seconds… to draw and label a destructive subduction margin ...
Theory of Plate Tectonics PowerPoint
... boundary, a subduction zone is formed when one oceanic plate, which is denser as a result of cooling, descends below another oceanic plate. • The process of subduction creates an ocean trench. ...
... boundary, a subduction zone is formed when one oceanic plate, which is denser as a result of cooling, descends below another oceanic plate. • The process of subduction creates an ocean trench. ...
Plate Tectonics Tectonics
... Africa fit almost perfectly. Not at the shoreline, but at the true edge of the continental margin (at the bottom of the continental slope). South America and Africa were joined in the past and split apart when the Atlantic Ocean opened ...
... Africa fit almost perfectly. Not at the shoreline, but at the true edge of the continental margin (at the bottom of the continental slope). South America and Africa were joined in the past and split apart when the Atlantic Ocean opened ...
The Origin of Continents and Oceans
... The layer of solid rock that surrounds the Earth and a thin layer of molten rock beneath it. ...
... The layer of solid rock that surrounds the Earth and a thin layer of molten rock beneath it. ...
Ocean-Continent Convergent Plate Boundaries - PAMS
... The movement of crust and magma causes earthquakes. A map of earthquake epicenters at subduction zones is ...
... The movement of crust and magma causes earthquakes. A map of earthquake epicenters at subduction zones is ...
plate tectonics - Madison County Schools
... • Earth’s crust is broken into many jagged pieces. The surface is like the shell of a hard-boiled egg that has been rolled. The pieces of Earth’s crust are called plates. Plates carry continents, oceans floors, or both. ...
... • Earth’s crust is broken into many jagged pieces. The surface is like the shell of a hard-boiled egg that has been rolled. The pieces of Earth’s crust are called plates. Plates carry continents, oceans floors, or both. ...
PLATE TECTONICS The Earth`s Crust is in Motion
... A plume of hot magma rises from deep within the mantle pushing up the crust and causing pressure forcing the continent to break and separate. Lava flows and earthquakes would be seen. ...
... A plume of hot magma rises from deep within the mantle pushing up the crust and causing pressure forcing the continent to break and separate. Lava flows and earthquakes would be seen. ...
Chapter 4 Plate tectonics Review Game
... Pillow lava and other forms of hardened lava are scattered across the ocean floor, this is evidence that molten material constantly erupts from the mid-ocean ridge ...
... Pillow lava and other forms of hardened lava are scattered across the ocean floor, this is evidence that molten material constantly erupts from the mid-ocean ridge ...
Plate Boundaries Lithospheric plates move as coherent units
... square kilometers of new seafloor. This mechanism has created the floor of the Atlantic Ocean during the past 160 million years and is appropriately called seafloor spreading. Because seafloor spreading is the dominant process associated with divergent boundaries, these zones are sometimes referred ...
... square kilometers of new seafloor. This mechanism has created the floor of the Atlantic Ocean during the past 160 million years and is appropriately called seafloor spreading. Because seafloor spreading is the dominant process associated with divergent boundaries, these zones are sometimes referred ...
Notes - Plate Tectonics
... 1. Age of Sea Floor Crust – The crust near a MOR is the youngest and gets older as you move farther away from the ridge - the oldest seafloor is about 260 million years (the oldest continental crust is 4.4 billion years old) ...
... 1. Age of Sea Floor Crust – The crust near a MOR is the youngest and gets older as you move farther away from the ridge - the oldest seafloor is about 260 million years (the oldest continental crust is 4.4 billion years old) ...
9.2 & 9.3 Plate Tectonics and Actions
... Example: Mid-Atlantic Ridge (runs the length of the Atlantic Ocean separating N & S American Plates from the Eurasian & African Plates ...
... Example: Mid-Atlantic Ridge (runs the length of the Atlantic Ocean separating N & S American Plates from the Eurasian & African Plates ...
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.