Plate boundaries are divided into three types divergent, convergent and transform. Apr 22, 2017 how did the land masses of the earth come to be. Continental drift and plate tectonics worksheet crossword. A plate tectonic puzzle american museum of natural history. The stress required for crustal shortening to build. Tuzo wilson offered a fundamental reinterpretation of wegeners continental drift theory and became the first person to use the term plates to describe the division and pattern of relative movement between different regions of the earths surface i. The plate tectonics theory is based on the continental drift theory in that it explains how the supercontinent drifted apart into several plates. Plate tectonicscontinental drift and mountain building find, read and cite all the research you. Continental drift 1912 alfred wegener meteorologist theory. The theory encompasses the concepts of continental drift, developed by alfred wegener, and seafloor spreading. Alfred wegener and continental drift it was not until 1912 that the idea of moving continents was seriously considered as a fullblown scientific theory called continental drift introduced in two articles published by a 32yearold german meteorologist named alfred lothar wegener alfred lothar wegener 18801930 earned a. Powered by create your own unique website with customizable templates.
In the 1960s, geology was transformed by the paradigm of plate tectonics. Plate tectonics theory the upper most mantle, along with overlying crust, behaves as a strong, rigid layer. Early evidence for plate tectonics magma generation, igneous intrusions, metamorphism, volcanic action, earthquakes, faulting, and folding are usually the result of plate tectonic activity. This is consistent with the previously considered evidence for continental drift and validates the hypotheses of wegener and du toit. The continental drift hypothesiscontinents have moved slowly to notetaking worksheet. A combination of the seafloor spreading theory and the continental drift theory. Continental drift and plate tectonics kaiserscience. On the history of the continents a story of plate tectonics and earth. By the 1960s the building blocks were in place to support the new hypothesis, seafloor spreading, that would provide the mechanism for continental. The theory has caused a revolution in the way we think about the earth. This approach is meant to highlight the historical development of the theory of plate tectonics. Alfred wegenerfrom continental drift to plate tectonics article pdf available in resonance 106.
Choose from 500 different sets of plate tectonics continental drift questions flashcards on quizlet. Oct 31, 2008 continental drift and plate tectonics slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Continental drift and plate tectonics are two theories explaining the geological evolution of the earth, specifically its crust. See more ideas about earth science, plate tectonics and 6th grade science. Continental drift and plate tectonics university of iceland. This video is a great introduction to the hypothesis of continental drift and tectonic plates. On the driving forces of plate tectonics geophysical journal. In 1915, the german geologist and meteorologist alfred wegener 18801930 first proposed the theory of continental drift, which states that parts of the earths crust slowly drift atop a liquid core. Pdf continental drift and plate tectonics part 1 jakie. Mar 17, 2016 in the 20th century, researchers realized that the earths crust is not one piece, but is made up of many huge tectonic plates upon which the continents ride. Plate tectonics is the grand, unifying theory of earth sciences, combining the concepts of continental drift and seafloor spreading into one holistic theory that explains many of the major structural features of the earths surface. It explains that the continents drifted apart because of the constant interaction between the earths tectonic plates and the heat of the earths core. If you continue browsing the site, you agree to the use of cookies on this website.
Plate tectonics and continental drift fleagle major. From continental drift to plate tectonics 7 and therefore they could not sink to become ocean basins. Small pieces of crust terranes are important in building up. Plate tectonics it was from the continental drift theory, convection current theory and the theory of seafloor spreading, the theory of plate tectonics was formulated. Wegeners continental drift meets wilsons plate tectonics. These are front to back video notes for students to fill out as they watch continents adrift. Over time the continents moved to their present day locations.
Plate tectonics continental drift and mountain building pdf. The concept was independently developed by german geologist alfred wegener in 1912. The plain mans guide to plate tectonics sciencedirect. Animation of sea floor spreading worldwide earthquake patterns help us know where the edges of plates are located the earths plates wegener 18801930 continental drift was wegeners theory that all continents had once been joined together in a single landmass and have drifted apart since. Introduction explain continental drift theory along with the person who gave this theory. The continents are embedded in the plates and drift passively with them, which over millions of years results in significant changes in earths. Subduction zone oceanic crust is heavier than continental crust. One of the most important contributions to the development of plate tectonic theory was alfred wegeners 1915 publication of the origin of continents and oceans which outlined his theory of continental drift.
Australia see more ideas about earth, plate tectonics and earth science. Tectonic plates drift, collide and deform, and we approximate tectonic effects. Plate tectonics pt plate tectonics is the movement of lithospheric plates relative to each other. Learn plate tectonics continental drift questions with free interactive flashcards. Plate tectonics model describes the large scale motions of earths lithosphere.
Continental drift and plate tectonics quiz quizizz. Continental drift theory alfred wegener proposed that parts of earths crust slowly drift atop a. Frisch and meschede and blakey answer all these questions and more through the presentation and explanation of the geodynamic processes upon which the theory of continental drift is based and which have led to the concept of plate tectonics. Continental drift, largescale horizontal movements of continents relative to one another and to the ocean basins during one or more episodes of geologic time. Mar 21, 2020 german meteorologist alfred wegener is often credited as the first to develop a theory of plate tectonics, in the form of continental drift. He also proposed a tectonic cycle the wilson cycle. This concept was an important precursor to the development of the theory of plate tectonics, which incorporates it. Plate tectonics discussion if you finish your discussion you may scroll down to the bottom of this page and watch the video natural disaster historys most. Plate tectonics has been rigorously tested from numerous sub disciplines in geology. The presentation about plate tectonics is divided into 3 separate discussions. Continental drift plate tectonics jeopardy template. Pdf alfred wegenerfrom continental drift to plate tectonics. Frisch and meschede and blakey answer all these questions and more through the presentation and explanation of the geodynamic processes upon which the theory of continental drift is based and which have lead to the concept of plate tectonics. Feb 14, 20 this is a united learning video on plate tectonics and continental drift.
Third, and most fundamental, physicists discovered radiogenic heat, which contradicted the basic assumption. Plate tectonics continental drift and mountain building. Plate tectonics and continental drift infographic live. This is the name of the proposed supercontinent where all the earths continents were once joined together. Subduction zones are where mountainbuilding orogeny occurs 6. New ocean crust is created along midocean ridges 4. A theory proposed by alfred wegner that said all continents were once joined 300 million years ago in a single land mass called pangaea. Continental drift and plate tectonics free download as powerpoint presentation. What is the difference between continental drift and plate. The concept of interplay between mantle convection and tectonics goes back to about a century ago, with the proposal. Discuss here in your discussion, you need to bring out the reasons why continental drift theory faced resistance and the reasons why plate tectonics provides a better explanation for the earths structure. Plate tectonics, the study of the arrangements of continents and oceans on the surface of the earth, and their ongoing movements, separations, and collisions has revolutionized our understanding of earth history, and the biogeographical history of primate evolution.
The fossil record supports and gives credence to the theories of continental drift and plate tectonics. Learn continental drift theory plate tectonics with free interactive flashcards. Plate tectonics readingnotetaking guide plate boundaries pp. Continental drift, sea floor spreading and plate tectonics. Alfred wegener, in the first three decades of this century, and dutoit in the 1920s and 1930s gathered evidence that the continents had moved.
They based their idea of continental drift on several lines of evidence. Plate tectonics is the theory that explains the structure, composition and internal workings of the earth on a worldwide scale, while continental drift refers to the theory that the continents all used to be connected in one megacontinent which scientists dub pangaea. The sections, called plates, move on a plasticlike layer of the mantle. Pdf on jan 1, 2012, karoly nemeth and others published w. The difference between continental drift and plate. Since the development of the theory, geologists have had to reexamine almost every aspect of.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Choose from 500 different sets of continental drift theory plate tectonics flashcards on quizlet. Continental drift, sea floor spreading and plate tectonics plate tectonics is a theory developed in the late 1960s, to explain how the outer layers of the earth move and deform. The continental drift hypothesiscontinents have moved slowly to their current locations 1. Continental drift plate tectonics underlined words and phrases are to be filled in by students on the notetaking worksheet. The lithosphere is divided into moving segments that change. Continental drift theory alfred wegener, 1922 plate tectonics breakup of pangea. I make a distinction between plate tectonics and continental drift because i think continental drift specifically refers to wegeners hypothesis which didnt have a mechanism and therefore you cant really call it a valid theory because it wasnt accepted by other scientists and it did have some things wrong with it. An introduction to continental drift and plate tectonics. All continents were once connected as one large landmass now called pangaea. Video showing how convection cells inside the earth move tectonic plates on the earths surface. Earths crust and upper mantle are broken into sections. The development of the theory is an excellent example of the cumulative nature of science and the scientifc. That continent eventually separated and drifted apart, forming into the seven continents we have today.
In an ironical twist, continental drift now generalized to plate tectonics is almost universally accepted, but we. In some places, it slides under the continental crust and melts into the. Plate tectonics, and continental drift proprofs quiz. Some know that south america and africa were one connected, but how did they split apart. This was the time when reptiles and winged insects first appeared. Wegener supported his argument with five lines of evidence. Large pieces of the lithosphere that float on the asthenosphere are called. Jun 20, 20 continental drift and plate tectonics are two theories explaining the geological evolution of the earth, specifically its crust. Cartoon illustrating trench retreat and continental drift fig. Divergent boundary occurs when plates move away from each other, creating.
Bringing together a large mass of geologic and paleontological data, wegener postulated that throughout most of geologic time there was only one continent, which he called pangea, and the breakup of this continent heralded earths current continental. Some researchers propose that a mantle plume generally plays an active role in triggering continental breakup and subsequently driving plate drift e. Plate tectonics and continental drift tectonics is the study of the orig in and arran gement o f earths stru ctural fea tures w hich include not only folds and faults but also continents, mountains, and earthquake regions. Continental drift section 1 plate tectonics underlined words and phrases are to be filled in by students on the a. Continental drift theory continental drift is the hypothesis that all the continents had once been joined together in a single landmass. Convection current theory cct convection current theory forms the basis of sfst and pt. Continental drift, seafloor spreading and plate tectonics. Importantly, drift paths recorded by paleomagnetism culminate in the assembly of a supercontinent during the late paleozoic. According to the theory of continental drift, the world was made up of a single continent through most of geologic time. Sep 30, 2017 students explore the basics of wegeners theory of continental drift. Most earthquakes and volcanoes occur along plate boundaries 3. Is the idea that the continents are slowly drifting further away from each other. Break in earths crust where rocks have slipped past each other 9.
Continental drift and the theory of plate tectonics. Difference between continental drift and plate tectonics. The first comprehensive theory of continental drift was suggested by the german meteorologist alfred wegener in 1912. Continental drift activity packet free pdf file sharing.
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