Plate Tectonics and the Rock Cycle
... mantle. The lithosphere is approximately 70 km thick under the oceans and perhaps 100-150 km thick under the continents. The lithosphere overlies the plastic asthenosphere. Oceanic lithosphere forms at ocean ridges from rising molten rock; it descends back into the asthenosphere in subduction zones. ...
... mantle. The lithosphere is approximately 70 km thick under the oceans and perhaps 100-150 km thick under the continents. The lithosphere overlies the plastic asthenosphere. Oceanic lithosphere forms at ocean ridges from rising molten rock; it descends back into the asthenosphere in subduction zones. ...
Plate Tectonics
... • Crustal plate margins are the areas where two or more crustal plates meet or interact. There are three main types of margins: • (a) Destructive / Zone of Convergence • (b) Constructive / Zone of Divergence • (c) Conservative / Transform Fault Margin/ ...
... • Crustal plate margins are the areas where two or more crustal plates meet or interact. There are three main types of margins: • (a) Destructive / Zone of Convergence • (b) Constructive / Zone of Divergence • (c) Conservative / Transform Fault Margin/ ...
Plate Tectonics - Hope Valley Library
... currents take place in our mantle. Hotter rock rises(lower density) closer to the surface of the Earth. It cools, and sinks. This creates a endless cycle of currents in the mantle. This is what slowly makes the plates move. ...
... currents take place in our mantle. Hotter rock rises(lower density) closer to the surface of the Earth. It cools, and sinks. This creates a endless cycle of currents in the mantle. This is what slowly makes the plates move. ...
Plate Tectonics Web Quest
... also see the movement in reverse! 1. Count the major plates. How many are there?___________________ 2. The theory of plate tectonics (meaning "plate structure") was developed in the 1960's. This theory explains the movement of the Earth's plates (which has since been documented scientifically) and a ...
... also see the movement in reverse! 1. Count the major plates. How many are there?___________________ 2. The theory of plate tectonics (meaning "plate structure") was developed in the 1960's. This theory explains the movement of the Earth's plates (which has since been documented scientifically) and a ...
Unit 3 Plate Tectonics, Volcanoes and Earthquakes
... New sea floor is formed. Youngest rock along the ridge. Age increases as you move away from ridge ...
... New sea floor is formed. Youngest rock along the ridge. Age increases as you move away from ridge ...
Xtra_credit_MC_chapt_5_2014.txt Xtra_credit_MC_chapt_5_2014.txt
... 1. Which plate is NOT adjacent to the Pacific plate? a) Australian plate b) North American plate c) Nazca Plate d) African Plate 2. Subdividing the layers of the earth by their chemical (composition) properties, then the layers of the earth are: a) crust, mantle, core b) lithosphere, asthenosphere, ...
... 1. Which plate is NOT adjacent to the Pacific plate? a) Australian plate b) North American plate c) Nazca Plate d) African Plate 2. Subdividing the layers of the earth by their chemical (composition) properties, then the layers of the earth are: a) crust, mantle, core b) lithosphere, asthenosphere, ...
Earth`s Layers
... Journey to the Center of the Earth (Discover June 2007) The deepest exploration ever: The Kola bore hole (about twice the size of a softball) the Russians drilled in the 70s and 80s reached a depth of 7.6 miles into the continental crust of Russia. They hit temps of 356 degrees F. But only reached ...
... Journey to the Center of the Earth (Discover June 2007) The deepest exploration ever: The Kola bore hole (about twice the size of a softball) the Russians drilled in the 70s and 80s reached a depth of 7.6 miles into the continental crust of Russia. They hit temps of 356 degrees F. But only reached ...
U 4 Lesson 6 Plate Tectonics
... What causes tectonic plates to move? • The mechanism called ridge push suggests that as lithosphere sinks, the plates are pushed away from the mid-ocean ridge. • The crust along the mid-ocean ridge is less dense. As it cools, it becomes denser and sinks into the mantle, pulling it away from the ridg ...
... What causes tectonic plates to move? • The mechanism called ridge push suggests that as lithosphere sinks, the plates are pushed away from the mid-ocean ridge. • The crust along the mid-ocean ridge is less dense. As it cools, it becomes denser and sinks into the mantle, pulling it away from the ridg ...
final_examgq - Chemistry at Winthrop University
... 8. [True or False] The Hawaiian Islands are a textbook example of a volcanic island arc formed from subduction. 9. [True or False] High pressure systems are generally associated with the development of large weather systems like warm fronts and cold fronts. 10. [True or False] Seismic P-waves can’t ...
... 8. [True or False] The Hawaiian Islands are a textbook example of a volcanic island arc formed from subduction. 9. [True or False] High pressure systems are generally associated with the development of large weather systems like warm fronts and cold fronts. 10. [True or False] Seismic P-waves can’t ...
pHeT – Plate Tectonics
... 1. At the top of the simulator, click on the Plate Motion tab. At the top click on “Manual Mode”. At the bottom, click on “Both” and “Show labels” and “Show Seawater” WHENEVER possible! Drag the Continental Crust Icon to both sides of the plate boundary. Two red knobs should appear. Drag one of the ...
... 1. At the top of the simulator, click on the Plate Motion tab. At the top click on “Manual Mode”. At the bottom, click on “Both” and “Show labels” and “Show Seawater” WHENEVER possible! Drag the Continental Crust Icon to both sides of the plate boundary. Two red knobs should appear. Drag one of the ...
Section 10.3
... Earth’s crust is made of different types of rock that are less dense than the mantle. It’s hard to imagine rocks floating on other rocks, but this is what happens inside Earth! ...
... Earth’s crust is made of different types of rock that are less dense than the mantle. It’s hard to imagine rocks floating on other rocks, but this is what happens inside Earth! ...
Year 10 exams: tectonics revision
... At this plate boundary, the plates move together very slowly. As they rub together this causes a lot of friction. Friction leads to earthquakes, and can also cause volcanoes because of the heat. ...
... At this plate boundary, the plates move together very slowly. As they rub together this causes a lot of friction. Friction leads to earthquakes, and can also cause volcanoes because of the heat. ...
Dynamic Crust 2017 NOTES due Friday
... of the deep ocean floor show that basaltic oceanic crust becomes progressively younger as you approach the mid ocean ridge ...
... of the deep ocean floor show that basaltic oceanic crust becomes progressively younger as you approach the mid ocean ridge ...
Chapter 22.1: Earth’s Structure
... In Notebook … 1. Draw and label a diagram of Earth that shows its 3 major layers. 2. What is each layer made up of? (Rock? Metals? Gas? Something else?) 3. What happens to temperatures as you move from the surface to the center? 4. What happens to pressure as you move from the surface to the center ...
... In Notebook … 1. Draw and label a diagram of Earth that shows its 3 major layers. 2. What is each layer made up of? (Rock? Metals? Gas? Something else?) 3. What happens to temperatures as you move from the surface to the center? 4. What happens to pressure as you move from the surface to the center ...
Living in an Active Zone - Penyrheol Comprehensive School Moodle
... • Two oceanic plates move away from each other shield volcanoes form creating mid ocean ridges e.g. mid Atlantic ridge. • When two continental plate move apart a rift valleys are formed. Shield volcanoes found here e.g. Iceland ...
... • Two oceanic plates move away from each other shield volcanoes form creating mid ocean ridges e.g. mid Atlantic ridge. • When two continental plate move apart a rift valleys are formed. Shield volcanoes found here e.g. Iceland ...
7th Grade Earth Science State and District Outcomes Summary
... Standard 3: Earth Systems Science ...
... Standard 3: Earth Systems Science ...
Chapter 22.1: Earth`s Structure
... 3. The asthenosphere – which is in the mantle 4. The core 5. The crust 5. Oceanic crust is denser (but thinner) 6. The upper mantle (and the crust make up the ...
... 3. The asthenosphere – which is in the mantle 4. The core 5. The crust 5. Oceanic crust is denser (but thinner) 6. The upper mantle (and the crust make up the ...
Chapter 22.1: Earth`s Structure
... 3. The asthenosphere – which is in the mantle 4. The core 5. The crust 5. Oceanic crust is denser (but thinner) 6. The upper mantle (and the crust make up the ...
... 3. The asthenosphere – which is in the mantle 4. The core 5. The crust 5. Oceanic crust is denser (but thinner) 6. The upper mantle (and the crust make up the ...
Chapter 2
... The lithosphere currently consists of 12 large plates. The seven largest plates are: North American Plate. South American Plate. African Plate. Pacific Plate. Eurasian Plate. Australian-Indian Plate. Antarctic Plate. ...
... The lithosphere currently consists of 12 large plates. The seven largest plates are: North American Plate. South American Plate. African Plate. Pacific Plate. Eurasian Plate. Australian-Indian Plate. Antarctic Plate. ...
Word format
... The mid-Atlantic ridge is an example of a spreading ridge. As a result of the process of (1) _________ that occurs at this ridge, the youngest oceanic crust in the north Atlantic must be located (2) ____________: A. (1) seafloor spreading (2) along the ridge itself B. (1) seafloor spreading (2) alon ...
... The mid-Atlantic ridge is an example of a spreading ridge. As a result of the process of (1) _________ that occurs at this ridge, the youngest oceanic crust in the north Atlantic must be located (2) ____________: A. (1) seafloor spreading (2) along the ridge itself B. (1) seafloor spreading (2) alon ...
Forces of Change
... Canyons Cliffs caverns Humans are both Builders AND Breakers of Landforms Islands and Mountains ...
... Canyons Cliffs caverns Humans are both Builders AND Breakers of Landforms Islands and Mountains ...
Plate Movement Lab KEY: Part I
... Plate Movement Lab: Part II – Conclusion Questions A. Divergent Plate Boundary 1. Describe what the asthenosphere looked like after the oceanic plates were pushed apart. It resembles a ridge or mountain chain. 2. What would happen to the molten material as it cools? It would harden and create ne ...
... Plate Movement Lab: Part II – Conclusion Questions A. Divergent Plate Boundary 1. Describe what the asthenosphere looked like after the oceanic plates were pushed apart. It resembles a ridge or mountain chain. 2. What would happen to the molten material as it cools? It would harden and create ne ...
Layers of the Earth
... waves that travel through the Earth’s interior during an earthquake. • Altered by the type of material that it travels through. ...
... waves that travel through the Earth’s interior during an earthquake. • Altered by the type of material that it travels through. ...
volcanic
... Once plate collides with another One plate destroys another One plate goes beneath another One plate divides another ...
... Once plate collides with another One plate destroys another One plate goes beneath another One plate divides another ...
geol_15_activity_2
... 6. Lithospheric Plates: Color the primary lithospheric plates. Part 2: Tectonic Plate Spreading Rates We can calculate an average rate of seafloor spreading by measuring the distance between MOR's, then divide the distance by the and age of seafloor rocks collected there (e.g. such as from ODP cores ...
... 6. Lithospheric Plates: Color the primary lithospheric plates. Part 2: Tectonic Plate Spreading Rates We can calculate an average rate of seafloor spreading by measuring the distance between MOR's, then divide the distance by the and age of seafloor rocks collected there (e.g. such as from ODP cores ...
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.