Continental Drift - sciencewithskinner
... - Fossil evidence (coal deposits) indicate a matching tropical or subtropical swamps in the northern hemisphere 4. Seafloor spreading 5. Paleomagnetism ...
... - Fossil evidence (coal deposits) indicate a matching tropical or subtropical swamps in the northern hemisphere 4. Seafloor spreading 5. Paleomagnetism ...
Key concepts
... Key terms density crust granite basalt mantle core lithosphere asthenosphere mesosphere (lower mantle) outer core inner core convection conduction Alfred Wegener continental drift Pangea seafloor Spreading subduction zones Plate Tectonics divergent plate boundary convergent plate boundary transform ...
... Key terms density crust granite basalt mantle core lithosphere asthenosphere mesosphere (lower mantle) outer core inner core convection conduction Alfred Wegener continental drift Pangea seafloor Spreading subduction zones Plate Tectonics divergent plate boundary convergent plate boundary transform ...
Differential seafloor spreading of the North Atlantic and consequent
... (1) Université Rennes 1, Geosciences UMR-CNRS 6118, Rennes, France ([email protected]), (2) LMTG, Université de Toulouse, IRD, Toulouse, France ...
... (1) Université Rennes 1, Geosciences UMR-CNRS 6118, Rennes, France ([email protected]), (2) LMTG, Université de Toulouse, IRD, Toulouse, France ...
with Plate tectonics!
... at a divergent boundary in the ocean? What is created at a divergent boundary on a continent? Divergent boundaries in the ocean = mid-ocean ridges and volcanoes Divergent boundaries on ...
... at a divergent boundary in the ocean? What is created at a divergent boundary on a continent? Divergent boundaries in the ocean = mid-ocean ridges and volcanoes Divergent boundaries on ...
Slide 1
... in for dinner she had even the slightest idea what a monumental effect her son would have on the world as we understand it? ...
... in for dinner she had even the slightest idea what a monumental effect her son would have on the world as we understand it? ...
Plate Tectonics - Londonderry School District
... yet coal can only form from plants that grow in warm climates. ...
... yet coal can only form from plants that grow in warm climates. ...
Review / Study Sheet for the next Big Test: Layers
... Heat and pressure cause the plates to move – pressure pushes the asthenosphere to move plates Outer core because it’s made of liquid metal Fe and Ni Solid? Must be inner core Outer core is liquid Outer core is hottest – hotter than the surface of the sun Lithosphere True, we have convection currents ...
... Heat and pressure cause the plates to move – pressure pushes the asthenosphere to move plates Outer core because it’s made of liquid metal Fe and Ni Solid? Must be inner core Outer core is liquid Outer core is hottest – hotter than the surface of the sun Lithosphere True, we have convection currents ...
Geological Processes class Booklet
... moved apart to their present positions He based his idea on the close fit of coastlines, and the similar patterns of rocks and fossils, of continents separated by large oceans He was unable to convincingly explain how the continents could move The current theory of plate tectonics became widel ...
... moved apart to their present positions He based his idea on the close fit of coastlines, and the similar patterns of rocks and fossils, of continents separated by large oceans He was unable to convincingly explain how the continents could move The current theory of plate tectonics became widel ...
The Earth`s Structure - Warren County Schools
... rests on, often creating _________________valleys. Wind Erosion – wind carries sediment that creates a ___________________ effect ...
... rests on, often creating _________________valleys. Wind Erosion – wind carries sediment that creates a ___________________ effect ...
Mountains, Volcanoes and Earthquakes
... on the Richter scale. Like volcanoes, earthquakes mostly occur along plate boundaries. ...
... on the Richter scale. Like volcanoes, earthquakes mostly occur along plate boundaries. ...
Slide 1
... • Because of the temperature difference within the mantle, the “pudding” moves • Hotter mantle rises toward the surface of the earth • Cool mantle moves toward the center ...
... • Because of the temperature difference within the mantle, the “pudding” moves • Hotter mantle rises toward the surface of the earth • Cool mantle moves toward the center ...
Plate Boundaries
... the asthenosphere (and perhaps the upper mantle), convection currents are the driving force of plate movement. ...
... the asthenosphere (and perhaps the upper mantle), convection currents are the driving force of plate movement. ...
Key_Final_Exam_EESC116301_14U
... B. they pump water from a reservoir into an elevated tank during the night C. this system takes advantage of the higher potentiometric surface of the tank D. this system takes advantage of the higher potentiometric surface of the aquifer from which they ...
... B. they pump water from a reservoir into an elevated tank during the night C. this system takes advantage of the higher potentiometric surface of the tank D. this system takes advantage of the higher potentiometric surface of the aquifer from which they ...
Evidence for Sea-Floor Spreading
... oceanic crust sinks down into a trench and back into the mantle; a convergent plate boundary. ...
... oceanic crust sinks down into a trench and back into the mantle; a convergent plate boundary. ...
PlateInteractions
... 8. Between what two plates would seafloor spreading be happening? 9. What does this do to the size of the ocean ...
... 8. Between what two plates would seafloor spreading be happening? 9. What does this do to the size of the ocean ...
Part D: Plate Tectonics: Types of Boundaries: Divergent
... Finish the following sentence. Divergent boundaries occur along spreading centers where are moving created by ...
... Finish the following sentence. Divergent boundaries occur along spreading centers where are moving created by ...
Elaborating on a Preexisting Concept
... 19. If plates are moving apart two centimeters per year, that distance is so insignificant that it could never be noticed. ...
... 19. If plates are moving apart two centimeters per year, that distance is so insignificant that it could never be noticed. ...
Slide 1
... The earth's plates sit on a dense, hot, somewhat melted layer of the earth. The plates move very slowly, pressing against one another in some places and pulling apart in other places, sometimes scraping alongside each other as they do. Mountains form as two continental plates, or an ocean plate and ...
... The earth's plates sit on a dense, hot, somewhat melted layer of the earth. The plates move very slowly, pressing against one another in some places and pulling apart in other places, sometimes scraping alongside each other as they do. Mountains form as two continental plates, or an ocean plate and ...
oceanic crust - Science by Shaw
... destroyed somewhere else (trenches). Subduction: when two plates collide at a trench and one plate sinks down into the mantle. Earthquakes usually occur at subduction zones. If the rock melts and rises, volcanoes form. ...
... destroyed somewhere else (trenches). Subduction: when two plates collide at a trench and one plate sinks down into the mantle. Earthquakes usually occur at subduction zones. If the rock melts and rises, volcanoes form. ...
Internal structure of the earth
... noticed the same plant and animal fossils on different continents. Since these plants and animals could not swim he suggested these land masses must have been joined. ...
... noticed the same plant and animal fossils on different continents. Since these plants and animals could not swim he suggested these land masses must have been joined. ...
Lecture Exam 1
... boundaries conserve the crust. b. Divergent boundaries destruct, convergent boundaries construct, and transform boundaries conserve the crust. c. Divergent boundaries construct, and convergent and transform boundaries destruct the crust. d. Divergent boundaries conserve, and convergent and transform ...
... boundaries conserve the crust. b. Divergent boundaries destruct, convergent boundaries construct, and transform boundaries conserve the crust. c. Divergent boundaries construct, and convergent and transform boundaries destruct the crust. d. Divergent boundaries conserve, and convergent and transform ...
Location - plate tectonically COMPRESSED.pub
... progression (a, b, c) of normal and reversed polarity recorded in the mafic (rich in iron and magnesium) rocks which form along divergent plate boundaries - part of the evidence that gives credence to this Theory. The “Ring of Fire” on Figure 1 refers to the semi-circular ring of active volcanoes al ...
... progression (a, b, c) of normal and reversed polarity recorded in the mafic (rich in iron and magnesium) rocks which form along divergent plate boundaries - part of the evidence that gives credence to this Theory. The “Ring of Fire” on Figure 1 refers to the semi-circular ring of active volcanoes al ...
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.