Pangea - Mrs. LeFevre`s Class
... Australia, and Antarctica) were one gigantic continent which scientists call Pangaea (pan-gee-uh). The name Pangaea is derived from the Ancient Greek words “pan” meaning "entire," and “Gaia” meaning "Earth." Continental drift, the process by which the continents broke apart and spread out across t ...
... Australia, and Antarctica) were one gigantic continent which scientists call Pangaea (pan-gee-uh). The name Pangaea is derived from the Ancient Greek words “pan” meaning "entire," and “Gaia” meaning "Earth." Continental drift, the process by which the continents broke apart and spread out across t ...
Continental Drift Reading
... theory of continental drift. Since the mapping of the Atlantic Ocean, people had noticed that the coastlines of South America and Africa looked as though they would fit like adjacent pieces of a jigsaw puzzle. Although his formal profession was meteorology, Wegener had always been curious about the ...
... theory of continental drift. Since the mapping of the Atlantic Ocean, people had noticed that the coastlines of South America and Africa looked as though they would fit like adjacent pieces of a jigsaw puzzle. Although his formal profession was meteorology, Wegener had always been curious about the ...
Asymmetric ocean basins - Dipartimento di Scienze della Terra
... (Doglioni et al., 2007); in our research we tested whether a worldwide asymmetry holds for oceanic rifts as well. For this purpose, we extracted sections across the S-wave tomographic model of the Earth’s lithosphere-asthenosphere system (Shapiro and Ritzwoller, 2002). The sections are perpendicular ...
... (Doglioni et al., 2007); in our research we tested whether a worldwide asymmetry holds for oceanic rifts as well. For this purpose, we extracted sections across the S-wave tomographic model of the Earth’s lithosphere-asthenosphere system (Shapiro and Ritzwoller, 2002). The sections are perpendicular ...
Feedback between mountain belt growth and plate convergence
... consumes a significant amount of the driving force available for plate tectonics by increasing frictional forces between downgoing and overriding plates. Keywords: plate convergence, mountain building, resistive stresses, plate motion. INTRODUCTION A central tenet of plate tectonics states that Eart ...
... consumes a significant amount of the driving force available for plate tectonics by increasing frictional forces between downgoing and overriding plates. Keywords: plate convergence, mountain building, resistive stresses, plate motion. INTRODUCTION A central tenet of plate tectonics states that Eart ...
Name Class___________ Date
... _____6. Dust and ash entering the atmosphere as a result of volcanic eruptions can affect Earth’s (1) tide (2) orbit (3) weather _____7. Which is an example of Earth’s hydrosphere? (1) ocean (2) tree (3) rock _____8. Movement of Earth’s crust along transform plate boundaries produces (1) cold fronts ...
... _____6. Dust and ash entering the atmosphere as a result of volcanic eruptions can affect Earth’s (1) tide (2) orbit (3) weather _____7. Which is an example of Earth’s hydrosphere? (1) ocean (2) tree (3) rock _____8. Movement of Earth’s crust along transform plate boundaries produces (1) cold fronts ...
Pangaea to Plate Tectonics Report
... 1955, the continental drift theory was very unpopular at the time of publication because scientists had not come up with an adequate explanation for how continents were able to move. In fact, seafloor spreading and plate tectonic theories, which brought continental drift theory into acceptance, had ...
... 1955, the continental drift theory was very unpopular at the time of publication because scientists had not come up with an adequate explanation for how continents were able to move. In fact, seafloor spreading and plate tectonic theories, which brought continental drift theory into acceptance, had ...
deep-ocean basin
... ridges adjust to changes in the direction of plate motions, they break into segments that are bounded by faults. ...
... ridges adjust to changes in the direction of plate motions, they break into segments that are bounded by faults. ...
A free plate surface and weak oceanic crust
... upper boundary, in which (double-sided) subduction can reinitiate from a stagnant lid mode. The implementation of continents might help to solve this problem; the models presented here only contain oceanic lithosphere, neglecting the presence of continents. Continents would provide another source of ...
... upper boundary, in which (double-sided) subduction can reinitiate from a stagnant lid mode. The implementation of continents might help to solve this problem; the models presented here only contain oceanic lithosphere, neglecting the presence of continents. Continents would provide another source of ...
List of review questions and info about the final
... Remind yourself what solidus and liquidus mean and how to read simple phase diagrams. What is the relationship between chemical composition and mineralogical structure? Why is the continental crust dominated by framework silicates and sheet silicates, the oceanic crust by framework silicates and cha ...
... Remind yourself what solidus and liquidus mean and how to read simple phase diagrams. What is the relationship between chemical composition and mineralogical structure? Why is the continental crust dominated by framework silicates and sheet silicates, the oceanic crust by framework silicates and cha ...
Earthquakes Assessment
... 28. How do the oceans remove CO2 from the atmosphere? a. Large aquatic mammals breathe in CO2 when they surface. b. Photoplankton removes CO2 by photosynthesis. c. CO2 dissolves in the top layer of water. d. Both b and c 29. How do ocean currents regulate the Earth’s temperature? a. They move heat f ...
... 28. How do the oceans remove CO2 from the atmosphere? a. Large aquatic mammals breathe in CO2 when they surface. b. Photoplankton removes CO2 by photosynthesis. c. CO2 dissolves in the top layer of water. d. Both b and c 29. How do ocean currents regulate the Earth’s temperature? a. They move heat f ...
Lab 4 Dynamic Ocean Floor - Western Oregon University
... fact that the ocean basins are geologically young, ephemeral features. Based upon this discovery, a revolutionary theory called plate tectonics has been developed that helps to explain and interrelate earthquakes, mountain building, and other geologic events and processes. The theory of plate tecton ...
... fact that the ocean basins are geologically young, ephemeral features. Based upon this discovery, a revolutionary theory called plate tectonics has been developed that helps to explain and interrelate earthquakes, mountain building, and other geologic events and processes. The theory of plate tecton ...
High School Science Proficiency Review #3 Earth Science
... 7. Which information indicates that new seafloor rock is forming along the mid‐ocean ridge and then moving horizontally away from the ridge? A. Most volcanoes are located under ocean wa‐ ter and found near the continental shelves. B. Paleomagnetic studies of the ocean floor demonstrate that t ...
... 7. Which information indicates that new seafloor rock is forming along the mid‐ocean ridge and then moving horizontally away from the ridge? A. Most volcanoes are located under ocean wa‐ ter and found near the continental shelves. B. Paleomagnetic studies of the ocean floor demonstrate that t ...
Layers of the Earth (Density`s affect on Earth)
... B. Composition: Mostly Silicon (Si--2.3 g/cm3), Oxygen (O---1.4 g/cm3), Iron (Fe--- 7.8 g/cm3), and Magnesium (Mg--- 1.7 g/cm3). C. Size: 2900 Km thick D. Temperature: 870-2200ºC E. Average Density: 4.4 g/cm3 ...
... B. Composition: Mostly Silicon (Si--2.3 g/cm3), Oxygen (O---1.4 g/cm3), Iron (Fe--- 7.8 g/cm3), and Magnesium (Mg--- 1.7 g/cm3). C. Size: 2900 Km thick D. Temperature: 870-2200ºC E. Average Density: 4.4 g/cm3 ...
Bedrock - NH Division of Forests and Lands
... rocks are those that have formed from the cooling and crystallization of molten rock. Molten rock found below the Earth’s surface, within the lithosphere of the Earth, is known as magma, while molten rock that has erupted onto the ocean floor or onto the surface of a continent is known as lava. Igne ...
... rocks are those that have formed from the cooling and crystallization of molten rock. Molten rock found below the Earth’s surface, within the lithosphere of the Earth, is known as magma, while molten rock that has erupted onto the ocean floor or onto the surface of a continent is known as lava. Igne ...
Are Students Guiding Your Lesson Plans
... • I have had the opportunity to attend PD for many different subjects and topics. • I have been able to establish a large “bank” of strategies to apply in many different situations. • I have created several curriculum plans which has given me my lots of opportunity to “fine tune.” • I have establish ...
... • I have had the opportunity to attend PD for many different subjects and topics. • I have been able to establish a large “bank” of strategies to apply in many different situations. • I have created several curriculum plans which has given me my lots of opportunity to “fine tune.” • I have establish ...
Auckland Islands Formation Volcanoes and
... e.g. volcanoes of Auckland city as well as the Auckland Islands. ...
... e.g. volcanoes of Auckland city as well as the Auckland Islands. ...
Nance Chapter 11 Lecture PPT
... the distribution of colder (seismically fast) material (blue) and hotter (seismically slow) material (red) to the core-mantle boundary based on seismic tomography. • The distribution of colder material suggests that the subducting slabs beneath both areas penetrate the main transition zone and exten ...
... the distribution of colder (seismically fast) material (blue) and hotter (seismically slow) material (red) to the core-mantle boundary based on seismic tomography. • The distribution of colder material suggests that the subducting slabs beneath both areas penetrate the main transition zone and exten ...
Metaphorical Thinking Exemplars
... When you slice a cake or a pie, that would be an example of a divergent boundary because the cake is spreading apart. The cake would represent the Earth and its layers. When you cut into a cake (like a divergent boundary) it shows how there are cracks in the Earth’s crust because of the crust spread ...
... When you slice a cake or a pie, that would be an example of a divergent boundary because the cake is spreading apart. The cake would represent the Earth and its layers. When you cut into a cake (like a divergent boundary) it shows how there are cracks in the Earth’s crust because of the crust spread ...
Unit One Power Point (saved as ppt)
... Unit 1.4: Continental Drift & Plate Tectonics • Not all plate boundaries coincide with continents • Some plates only oceanic crust • Some plate have both crusts ...
... Unit 1.4: Continental Drift & Plate Tectonics • Not all plate boundaries coincide with continents • Some plates only oceanic crust • Some plate have both crusts ...
Day Starter Quizzes
... where an oceanic plate is forced beneath a second plate where an oceanic plate grinds past a second plate where a continental plate grinds past a second plate where an oceanic plate moves away from a second plate ...
... where an oceanic plate is forced beneath a second plate where an oceanic plate grinds past a second plate where a continental plate grinds past a second plate where an oceanic plate moves away from a second plate ...
EARTHQUAKES !!!
... 2) Caused MAINLY by the breaking of rock due to moving tectonic plates. 3) EQ occur Mainly on plate boundaries & volcanoes 3) EQ CAN occur anywhere at any time. 4) EQ occur at least 1 per minute somewhere in the world. Approximately 20 Earthquakes have occurred while you have written this. • http:// ...
... 2) Caused MAINLY by the breaking of rock due to moving tectonic plates. 3) EQ occur Mainly on plate boundaries & volcanoes 3) EQ CAN occur anywhere at any time. 4) EQ occur at least 1 per minute somewhere in the world. Approximately 20 Earthquakes have occurred while you have written this. • http:// ...
MOVEMENT OF EARTH’S CRUST
... comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans (oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust). ...
... comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans (oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust). ...
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.