Plate Tectonics - My Teacher Pages
... liquid by the circulation of currents from one region to another Convection cell is a circular-moving loop of matter (gas or liquid) involved in convection movement ...
... liquid by the circulation of currents from one region to another Convection cell is a circular-moving loop of matter (gas or liquid) involved in convection movement ...
Chapter-2_PracticeTest
... 24. Examine the diagram below that shows seismic waves passing through Earth from an earthquake. a) Explain why no S waves were detected at station X. b) What are shadow zones? c) What shape are shadow zones on a spherical Earth? d) Are shadow zones predictable? ...
... 24. Examine the diagram below that shows seismic waves passing through Earth from an earthquake. a) Explain why no S waves were detected at station X. b) What are shadow zones? c) What shape are shadow zones on a spherical Earth? d) Are shadow zones predictable? ...
deep-ocean trench
... They felt it would have been impossible for huge solid chunks of land to have plowed through the ocean floor. ...
... They felt it would have been impossible for huge solid chunks of land to have plowed through the ocean floor. ...
Plate Tectonics Webquest
... where the ocean floor was being ripped in two lengthwise along the ridge crest. New magma from deep within the Earth rises easily through these weak zones and eventually erupts along the crest of the ridges to create new oceanic crust. This process, was later called _____________ _____________. 13. ...
... where the ocean floor was being ripped in two lengthwise along the ridge crest. New magma from deep within the Earth rises easily through these weak zones and eventually erupts along the crest of the ridges to create new oceanic crust. This process, was later called _____________ _____________. 13. ...
Earth`s Different Layers
... that the lithosphere is broken into many large and small slabs of rock called tectonic plates (tehk-TAHN-ihk). Scientists do not know exactly how or when in Earth’s history these giant plates formed. Tectonic plates fit together like a jigsaw puzzle that makes up the surface of Earth. You could comp ...
... that the lithosphere is broken into many large and small slabs of rock called tectonic plates (tehk-TAHN-ihk). Scientists do not know exactly how or when in Earth’s history these giant plates formed. Tectonic plates fit together like a jigsaw puzzle that makes up the surface of Earth. You could comp ...
plate tectonics
... – As the plates bump into each other, boundaries form! – Plates move in different directions because there are many conv. cells within the Mantle! ...
... – As the plates bump into each other, boundaries form! – Plates move in different directions because there are many conv. cells within the Mantle! ...
Note on Plate tectonics
... Magnetic Clues - in iron bearing basalt rock of ocean floors; sea floor rocks show many magnetic reversals; magnetic alignment of rocks flip flops back & forth parallel to the ...
... Magnetic Clues - in iron bearing basalt rock of ocean floors; sea floor rocks show many magnetic reversals; magnetic alignment of rocks flip flops back & forth parallel to the ...
Types of Plate Boundaries
... thickens and crustal rocks are folded and faulted. Large amounts of uplift push rock high into the sky, forming mountain ranges such as the Alps or the ...
... thickens and crustal rocks are folded and faulted. Large amounts of uplift push rock high into the sky, forming mountain ranges such as the Alps or the ...
YEAR 7 SCIENCE HOMEWORK /YOU ARE A SCIENTIST 1
... The lithosphere is the outside layer of the Earth. It consists of pieces of crust, called plates, which move very slowly over the surface of the Earth. The lithosphere is made of solid rock. The continents are part of these plates. The asthenosphere is the part of the Earth which moves the plate ...
... The lithosphere is the outside layer of the Earth. It consists of pieces of crust, called plates, which move very slowly over the surface of the Earth. The lithosphere is made of solid rock. The continents are part of these plates. The asthenosphere is the part of the Earth which moves the plate ...
Types of Plate Boundaries
... thickens and crustal rocks are folded and faulted. Large amounts of uplift push rock high into the sky, forming mountain ranges such as the Alps or the ...
... thickens and crustal rocks are folded and faulted. Large amounts of uplift push rock high into the sky, forming mountain ranges such as the Alps or the ...
A possible result of plates moving along a transform boundary is
... What is a possible result of plates moves along a transform boundary? ...
... What is a possible result of plates moves along a transform boundary? ...
ES Ch 3 Quiz Review `13
... B. Continental Drift (Section 3-1 of Dynamic Earth text, “Evidence for Continental Drift” notes) • Know the meaning and origin of the theory of continental drift and the evidence Wegener used to support the idea. Be able to describe specific examples and how the evidence supports the idea of contine ...
... B. Continental Drift (Section 3-1 of Dynamic Earth text, “Evidence for Continental Drift” notes) • Know the meaning and origin of the theory of continental drift and the evidence Wegener used to support the idea. Be able to describe specific examples and how the evidence supports the idea of contine ...
Year 3 Plate Tectonics
... More than 100 million years ago, the Andes began to form by the uplifting and folding of sedimentary rocks accumulated along the edge of the continental plate. Massive layers of rock got folded by compressional forces as a result and formed a narrow belt along the western edge of the continent. Duri ...
... More than 100 million years ago, the Andes began to form by the uplifting and folding of sedimentary rocks accumulated along the edge of the continental plate. Massive layers of rock got folded by compressional forces as a result and formed a narrow belt along the western edge of the continent. Duri ...
Why are plate margins hazardous? Ground
... creating basaltic (like a basalt) magma – this creates volcanoes which help create new oceanic crust. This is happening to form the mid-Atlantic Ridge. If it happens in a continent then rift valleys form – this is happening in East Africa and causes the volcanoes in Uganda such as Mount Elgon next t ...
... creating basaltic (like a basalt) magma – this creates volcanoes which help create new oceanic crust. This is happening to form the mid-Atlantic Ridge. If it happens in a continent then rift valleys form – this is happening in East Africa and causes the volcanoes in Uganda such as Mount Elgon next t ...
Crust - UNLV Geoscience
... – The plates move with respect to one another and thus continents are mobile (imbedded in plates) – Continents are relatively old, ocean basins ...
... – The plates move with respect to one another and thus continents are mobile (imbedded in plates) – Continents are relatively old, ocean basins ...
Practical 3 - Tectonic forces 1 Slab pull and viscosity of the
... F IG . 2 – Bathymetry of the ocean floor due to the cooling of the lithosphere. 1. Derive the literal expression, written using integrals, of the isostatic equilibrium between the mid-oceanic ridge and the oceanic plate at a distance l from the ridge at the compensation depth d. ...
... F IG . 2 – Bathymetry of the ocean floor due to the cooling of the lithosphere. 1. Derive the literal expression, written using integrals, of the isostatic equilibrium between the mid-oceanic ridge and the oceanic plate at a distance l from the ridge at the compensation depth d. ...
File
... the motion of a hot material under the crust changes the crust of the Earth. These are called plate tectonics and they never stop moving! ...
... the motion of a hot material under the crust changes the crust of the Earth. These are called plate tectonics and they never stop moving! ...
File
... 10. You learned about divergent boundaries when you read about seafloor spreading. Seafloor spreading is when a mid-ocean ridge forms when ________________________ plates separate. ...
... 10. You learned about divergent boundaries when you read about seafloor spreading. Seafloor spreading is when a mid-ocean ridge forms when ________________________ plates separate. ...
File
... underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
... underneath the continental lithosphere • Oceanic lithosphere heats and dehydrates as it subsides • The melt rises forming volcanism • E.g. The Andes ...
Divergent Margins
... 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 ...
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.