Plate tectonics and Volcanoes
... Features: A ridge of underwater mountains Example: Mid-ocean Ridge ...
... Features: A ridge of underwater mountains Example: Mid-ocean Ridge ...
Plate Boundaries
... Continental Plates collide producing very high non-volcanic mountain chains. The “boundary” between these plates becomes welded –this area is called the suture zone. Earthquakes are numerous. Continental crust is too bouyant to go into the mantle (so there is no subduction). ...
... Continental Plates collide producing very high non-volcanic mountain chains. The “boundary” between these plates becomes welded –this area is called the suture zone. Earthquakes are numerous. Continental crust is too bouyant to go into the mantle (so there is no subduction). ...
Jordan`s Science Rap
... Crust, mantle, core That’s not all that I heard Crust is the thinnest And mantle is the thickest Don’t forget poor little core The core is the hottest The hottest of them all ...
... Crust, mantle, core That’s not all that I heard Crust is the thinnest And mantle is the thickest Don’t forget poor little core The core is the hottest The hottest of them all ...
Science 10 - Mr. Laura/ Ms. Reynolds Fleetwood Park Secondary
... 1. Tectonic plates make up the lithosphere, which floats on the asthenosphere • The ____________is the crust and upper portion of the mantle. • The ____________is the molten layer of the upper mantle. 2. There are about 12 major tectonic plates and many smaller ones. • Tectonic plates are all moving ...
... 1. Tectonic plates make up the lithosphere, which floats on the asthenosphere • The ____________is the crust and upper portion of the mantle. • The ____________is the molten layer of the upper mantle. 2. There are about 12 major tectonic plates and many smaller ones. • Tectonic plates are all moving ...
Week 2 background reading
... are referred to as Constructive Plate Margins. This may be a divergence of two plates of oceanic crust, or two plates of continental crust. It is due to the divergence of two convection cells, which brings magma from the asthenosphere towards the surface. The pressure from the rising magma lea ...
... are referred to as Constructive Plate Margins. This may be a divergence of two plates of oceanic crust, or two plates of continental crust. It is due to the divergence of two convection cells, which brings magma from the asthenosphere towards the surface. The pressure from the rising magma lea ...
Mariana Ocean Trench case study
... Location: The Mariana trench is located in the Pacific Ocean. It forms the boundary between two tectonic plates. Formation: The Pacific Plate (Denser), is subducted (thrust) beneath the Mariana Plate that lies to the west. Both plates are Oceanic plates. They are found along destructive margins. As ...
... Location: The Mariana trench is located in the Pacific Ocean. It forms the boundary between two tectonic plates. Formation: The Pacific Plate (Denser), is subducted (thrust) beneath the Mariana Plate that lies to the west. Both plates are Oceanic plates. They are found along destructive margins. As ...
Benchmark 3 Answer Key
... Sea floor spreading- makes mid ocean ridges (2 oceanic plates dividing) Rift valley (2 continental plates dividing) 15. What geological event takes place at transform boundaries? Major earthquakes 16. What geological features are created at convergent boundaries with subduction? Volcanic islands, vo ...
... Sea floor spreading- makes mid ocean ridges (2 oceanic plates dividing) Rift valley (2 continental plates dividing) 15. What geological event takes place at transform boundaries? Major earthquakes 16. What geological features are created at convergent boundaries with subduction? Volcanic islands, vo ...
The Theory of Plate Tectonics
... • Two types of crust: Oceanic and Continental • Plates are usually made of both types • Plates: Chunks of lithosphere “floating” around on the asthenosphere ...
... • Two types of crust: Oceanic and Continental • Plates are usually made of both types • Plates: Chunks of lithosphere “floating” around on the asthenosphere ...
Plate Tectonics
... Wilson’s theory came to be known as the theory of Plate Tectonics. This theory explains the formation, movement and subduction of the Earth’s crust. No plate can move without affecting the other plates surrounding it. As the plates move, they collide, pull apart, or grind past each other, causing ch ...
... Wilson’s theory came to be known as the theory of Plate Tectonics. This theory explains the formation, movement and subduction of the Earth’s crust. No plate can move without affecting the other plates surrounding it. As the plates move, they collide, pull apart, or grind past each other, causing ch ...
Crust - Mrs. Bock
... The middle mantle "flows" because of convection currents. Convection currents are caused by the very hot material at the deepest part of the mantle rising, then cooling and sinking again --repeating this cycle over and over. ...
... The middle mantle "flows" because of convection currents. Convection currents are caused by the very hot material at the deepest part of the mantle rising, then cooling and sinking again --repeating this cycle over and over. ...
No Slide Title
... • eg. the shape of the west coast of Africa and the east coast of South America are remarkably similar and were perhaps once joined ...
... • eg. the shape of the west coast of Africa and the east coast of South America are remarkably similar and were perhaps once joined ...
d12 Oceanic-oceanic, oceanic-continental, and - e
... Oman).3 In the case of continental-continental convergence one of the plates passes under the other and in so doing doubles the thickness of the continental crust (example: Himalayan) but it does not subduct further into the mantle.4 Locally, a plate margin can be: (1) a constructive margin (marked ...
... Oman).3 In the case of continental-continental convergence one of the plates passes under the other and in so doing doubles the thickness of the continental crust (example: Himalayan) but it does not subduct further into the mantle.4 Locally, a plate margin can be: (1) a constructive margin (marked ...
plate tectonics study guide
... asthenosphere — a portion of the mantle which lies under the lithosphere. This zone consists of easily deformed rock “Plastic like layer “ continental drift — Alfred Wegener’s hypothesis proposing large horizontal motions of continents. This idea has been replaced by the theory of plate tectonics. ...
... asthenosphere — a portion of the mantle which lies under the lithosphere. This zone consists of easily deformed rock “Plastic like layer “ continental drift — Alfred Wegener’s hypothesis proposing large horizontal motions of continents. This idea has been replaced by the theory of plate tectonics. ...
Plate Tectonics, Earthquakes, Volcanoes Study Guide 1. The
... Which island is the youngest? 14. Which of the following are landscape features associated with volcanoes? a. ...
... Which island is the youngest? 14. Which of the following are landscape features associated with volcanoes? a. ...
Lecture 5b (Plate Tectonics)
... “Know more about surface of Venus than of Earth” Expected “ocean crust” (spreading ridge, subduct zone) See “continental crust” (mountains, strike-slip faults) Explanation: “Venus' surface so hot that is naturally buoyant” ...
... “Know more about surface of Venus than of Earth” Expected “ocean crust” (spreading ridge, subduct zone) See “continental crust” (mountains, strike-slip faults) Explanation: “Venus' surface so hot that is naturally buoyant” ...
The plate tectonic revolution part II.
... Review of last class Why isn’t the Earth expanding? Plate boundaries, earthquakes and volcanoes What causes plate tectonics? How fast do plates move? Earth evolution: the supercontinent cycle The Snowball Earth hypothesis ...
... Review of last class Why isn’t the Earth expanding? Plate boundaries, earthquakes and volcanoes What causes plate tectonics? How fast do plates move? Earth evolution: the supercontinent cycle The Snowball Earth hypothesis ...
Plate Tectonics
... • What are the major differences in plate tectonic settings between the U.S. eastern and western coasts? • Will the tectonic cycle ever stop? Why or why not? • Why is most seismic and volcanic energy released along the Pacific rim? • Does plate tectonics play a role in shaping your local ...
... • What are the major differences in plate tectonic settings between the U.S. eastern and western coasts? • Will the tectonic cycle ever stop? Why or why not? • Why is most seismic and volcanic energy released along the Pacific rim? • Does plate tectonics play a role in shaping your local ...
The Crust - Fort Bend ISD
... convection currents move in the liquid. • When the convection currents flow in the asthenosphere they also move the crust. • The crust gets a free ride with these currents, like the cork in this illustration. ...
... convection currents move in the liquid. • When the convection currents flow in the asthenosphere they also move the crust. • The crust gets a free ride with these currents, like the cork in this illustration. ...
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.