lecture notes
... Subduction is the process at a trench whereby one part of the sea floor plunges below another and down into the asthenosphere As the rocks scrape past each other, they generate earthquakes In the asthenosphere the sea fl.oor melts and the molten material rises, melting through the overlying plat ...
... Subduction is the process at a trench whereby one part of the sea floor plunges below another and down into the asthenosphere As the rocks scrape past each other, they generate earthquakes In the asthenosphere the sea fl.oor melts and the molten material rises, melting through the overlying plat ...
Plate Tectonics
... Boundary between two plates that are sliding past each other Located at mid-ocean ridges, and most famously, California at the San Andreas ...
... Boundary between two plates that are sliding past each other Located at mid-ocean ridges, and most famously, California at the San Andreas ...
7-3 Lecture PDF
... This layer is hot and flows like plastic (meaning that it can be molded or change shape without breaking) ...
... This layer is hot and flows like plastic (meaning that it can be molded or change shape without breaking) ...
Introduction to Plate Tectonics
... • So the lithosphere is actually made of several massive (huge) chunks called tectonic plates ...
... • So the lithosphere is actually made of several massive (huge) chunks called tectonic plates ...
Plate Tectonics
... Ridge Push/Slab Pull • Ridge Push – MOR is higher than the ocean floor because the lithosphere near the ridge is thinner and hotter and gravity causes the plate to slide away and outward. • Slab Pull – Subducting oceanic lithosphere is denser than the surrounding asthenosphere. Gravity pull the pla ...
... Ridge Push/Slab Pull • Ridge Push – MOR is higher than the ocean floor because the lithosphere near the ridge is thinner and hotter and gravity causes the plate to slide away and outward. • Slab Pull – Subducting oceanic lithosphere is denser than the surrounding asthenosphere. Gravity pull the pla ...
Passing Plates I
... asthenosphere. The asthenosphere is made up of a mixture of gases. These plates would move in relation to each other above hotter deeper zones. Along the boundaries of these shifting plates you have some of the world's most active volcanoes or plate-boundary volcanoes. ...
... asthenosphere. The asthenosphere is made up of a mixture of gases. These plates would move in relation to each other above hotter deeper zones. Along the boundaries of these shifting plates you have some of the world's most active volcanoes or plate-boundary volcanoes. ...
Earthquake Depth Data - Hillview Middle School
... 5. The boundary between the Nazca and Pacific plate is part of the East Pacific Rise. If new rock (sea floor) is being formed at the East Pacific Rise, which trench (Tonga or Chile) should contain the oldest rock? Why? (Complete sentences) ...
... 5. The boundary between the Nazca and Pacific plate is part of the East Pacific Rise. If new rock (sea floor) is being formed at the East Pacific Rise, which trench (Tonga or Chile) should contain the oldest rock? Why? (Complete sentences) ...
Plate Tectonics
... • Major regions of volcanic activity in the interior of plates away from plate boundaries. ...
... • Major regions of volcanic activity in the interior of plates away from plate boundaries. ...
!GLG 101-Illustrated Vocabulary-Chapter 18 !Plate Tectonics
... *a spreading ridge where two crustal plates are moving apart; this underwater ridge goes straight up the middle of the Atlantic Ocean !oceanic crust *the crust of the Earth beneath the oceans; typically only 2 to three miles thick. !oceanic-contintental plate boundary *if this is a convergent bounda ...
... *a spreading ridge where two crustal plates are moving apart; this underwater ridge goes straight up the middle of the Atlantic Ocean !oceanic crust *the crust of the Earth beneath the oceans; typically only 2 to three miles thick. !oceanic-contintental plate boundary *if this is a convergent bounda ...
Power Point File 5 - KFUPM Faculty List
... • coupled: currents in the mantle raft the overlying plates around. Traction stresses at the base of the plates would be critical. • decoupled: plates move due to internal body forces, and influence the shallow convection current pattern in the mantle. ...
... • coupled: currents in the mantle raft the overlying plates around. Traction stresses at the base of the plates would be critical. • decoupled: plates move due to internal body forces, and influence the shallow convection current pattern in the mantle. ...
To get a better understanding of this whole process, I would like you
... c. Transform boundaries -- where crust is neither produced nor destroyed as the plates slide horizontally past each other. d. Plate boundary zones -- broad belts in which boundaries are not well defined and the effects of plate interaction are unclear. Divergent Boundaries 2. Give a thorough descrip ...
... c. Transform boundaries -- where crust is neither produced nor destroyed as the plates slide horizontally past each other. d. Plate boundary zones -- broad belts in which boundaries are not well defined and the effects of plate interaction are unclear. Divergent Boundaries 2. Give a thorough descrip ...
Plate Boundaries
... Plate Tectonics—the theory supported by a wide range of evidence that considers the earth’s crust and upper mantle to be composed of several large, thin, relatively rigid plates that move relative to one another. Slip on faults that define the plate boundaries commonly results in earthquakes. Severa ...
... Plate Tectonics—the theory supported by a wide range of evidence that considers the earth’s crust and upper mantle to be composed of several large, thin, relatively rigid plates that move relative to one another. Slip on faults that define the plate boundaries commonly results in earthquakes. Severa ...
S05_4359_Exam01
... _____25. A measure of the violence of ground shaking based on damage done to human-made structures, surface changes, and felt reports, which varies with distance and ground conditions is called the Earthquake: A. Magnitude; B. Hypocenter, C. Epicenter, D. Focus, E. Intensity, or F. Moment. _____26. ...
... _____25. A measure of the violence of ground shaking based on damage done to human-made structures, surface changes, and felt reports, which varies with distance and ground conditions is called the Earthquake: A. Magnitude; B. Hypocenter, C. Epicenter, D. Focus, E. Intensity, or F. Moment. _____26. ...
Tectonic Lithospheric Plate Boundaries
... You have learned that lithospheric plates move due to convection, slab pulling and ridge pushing –basically gravity and heat. You have also categorized many different mountains according to their shape. Let’s find out how these shapes came to be. Interact with pages 100 and 101. Use the outline prov ...
... You have learned that lithospheric plates move due to convection, slab pulling and ridge pushing –basically gravity and heat. You have also categorized many different mountains according to their shape. Let’s find out how these shapes came to be. Interact with pages 100 and 101. Use the outline prov ...
Bell Activity #11
... The Core The layer of the Earth that extends from below the mantle to the center of the Earth is the core. Scientists think that the Earth’s core is made mostly of ...
... The Core The layer of the Earth that extends from below the mantle to the center of the Earth is the core. Scientists think that the Earth’s core is made mostly of ...
Skinner Chapter 4
... between a convergent margin where subduction is occurring and a convergent margin where continental collision is occurring. 44. What is the source of the energy that drives plate motion? 45. What is a hot spot? 46. Why was Wegener's hypothesis of continental drift not widely accepted when it was fir ...
... between a convergent margin where subduction is occurring and a convergent margin where continental collision is occurring. 44. What is the source of the energy that drives plate motion? 45. What is a hot spot? 46. Why was Wegener's hypothesis of continental drift not widely accepted when it was fir ...
Exam 1
... d. on continental margins 15. Plates move horizontally (slide) past each other along a. transform faults b. convergent plate boundaries c. divergent plate boundaries d. island arc systems 16. Seafloor spreading is continuing at a rate of approximately a. 1 to 10 cm/yr b. 1 to 10 m/yr c. 1 to 10 km/y ...
... d. on continental margins 15. Plates move horizontally (slide) past each other along a. transform faults b. convergent plate boundaries c. divergent plate boundaries d. island arc systems 16. Seafloor spreading is continuing at a rate of approximately a. 1 to 10 cm/yr b. 1 to 10 m/yr c. 1 to 10 km/y ...
Plate Tectonic Theory
... magnetic profile of the earth at that time Magnetic field switches every so often though. Pattern mirrors on ocean floor as well ...
... magnetic profile of the earth at that time Magnetic field switches every so often though. Pattern mirrors on ocean floor as well ...
Chapter 17 Review game
... Briefly explain plate tectonics? The Earth’s upper crust is broken into large slabs called “Plates”. These plates move around due to convection cells that are occurring underneath them in the Mantle. These plates interact with each other at plate boundaries. There are frequently volcanoes and earth ...
... Briefly explain plate tectonics? The Earth’s upper crust is broken into large slabs called “Plates”. These plates move around due to convection cells that are occurring underneath them in the Mantle. These plates interact with each other at plate boundaries. There are frequently volcanoes and earth ...
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.