Introduction to plate tectonics and earthquakes powerpoint. Pangaea the idea of pangaea and some of the evidence behind it. Plate tectonics the earths crust is divided into plates which are moved in various directions. If youre behind a web filter, please make sure that the domains. Continental drift and plate tectonics powerpoint, notes, a. Create a timeline of the events leading to the theory of plate tectonics. Generally, an ebook can be downloaded in five minutes or less. Feb 11, 2016 selection file type icon file name description size revision time user. The presentation about plate tectonics is divided into 3 separate discussions. Abraham ortelius 1596 continents fit like jigsaw puzzle ortelius suggested that the americas were torn away from europe and africa. Plates of the earth, property of interior rocks and how they affect interaction among the plates 3. Plate tectonics plate tectonics earth layers history of plate tectonics plate movement and margins passive margins, spreading margins, and the ring of. The platelike sections that move as distinct masses cause much of the earths seismic activity at the boundary of these plates.
When using the powerpoint slides as a learning resource, it is important to read the notes that accompany. And yet, the theory of plate tectonics represents a fairly young science. A free powerpoint ppt presentation displayed as a flash slide show on id. Plate tectonic theory dan mckenzie lives 1942 english geophysicist 1968 theory of plate tectonics is a combination of two earlier ideas. Dec 16, 2011 a great powerpoint about plate tectonics. Introduction to plate tectonics smith and pun chapter 1 2 tectonics is the study of the origin and arrangement of the broad structural features of earths surface including. This plate motion causes them to collide, pull apart, or scrape against each other. Ppt plate tectonics powerpoint presentation free to. Continental drift, sea floor spreading and plate tectonics.
Powerpoint presentation physical geology, 10e csun. Plates are in constant motion and are continually changing shape and size. The connection of deepfocus earthquakes and oceanic trenches is further evidence. Geological features of convergent plate boundaries. Plate tectonics, our major paradigm for how the earth works, was established in the 1960ies following decades of observational research that culminated in key discoveries such as geomagnetic. Stresses relax in the lower portion of the plate where creep processes dominate, but still behaves coherently with the plate. View plate tectonic ppts online, safely and virusfree. Earthquakes and volcanoes help locating plate boundaries. Free powerpoint presentations about plate tectonics for.
Today, these theories serve as the foundation upon. The father of plate tectonics, alfred wegener proposed continental drift in 1912, but was ridiculed by fellow scientists. Mar 21, 2020 the concept of plate tectonics was formulated in the 1960s. 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.
Chapter new chapter plate tectonics the big idea the movement of tectonic plates causes geologic changes on earth. Plate tectonics 1 plate tectonics 2 the theory of plate tectonics states. Plate tectonics history of plate tectonics and continental drift 1. Pacific hemisphere plate tectonics, 80 ma to present. Math science social studies history specialty holidays seasonal.
This is a ks3 lesson on the plate tectonics theory. According to the theory, earth has a rigid outer layer, known as the lithosphere, which is typically about 100 km 60 miles thick and overlies a plastic moldable, partially molten layer called the asthenosphere. The theory has caused a revolution in the way we think about the earth. The contribution of hess hess measured the oceans to the deepest points to date, 10. Folds and faults mountain ranges continents earthquake belts the basic premise of plate tectonics is that the earths surface is divided into a few large, thick. Plate tectonics plate tectonics a relatively new area of study. Connors plate tectonic powerpoint slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Selection file type icon file name description size revision time user. The plate like sections that move as distinct masses cause much of the earths seismic activity at the boundary of these plates. In 1977, after decades of tediously collecting and mapping ocean sonar data, scientists began to see a fairly accurate picture of the seafloor emerge. Physical geology examines the materials and processes of the earth. The lithosphere is broken up into seven very large continental and oceansized plates, six or seven mediumsized regional. History of plate tectonics plate tectonic theory had its beginnings in 1915 when alfred wegener proposed his theory of continental drift. Plate tectonics earths surface composed thick plates that move.
Unit 6 plate tectonics ms lee earth science part 2. This website and its content is subject to our terms and conditions. Tectonic plates powerpoint presentation teacher made twinkl. The original definition of plate tectonics has recently been modified to include a description of the driving force as a theory of global tectonics powered by subduction in which the lithosphere is divided into a mosaic of plates, which move on and sink into weaker ductile asthenosphere. If youre seeing this message, it means were having trouble loading external resources on our website. May 11, 2017 earths history should include pre plate tectonic and plate tectonic phases beginning less than a billion years ago, according to a team of geoscientists in the journal geology. The layered earth plate tectonic movements past and future duration. We do not inherit the earth from our ancestors, we borrow it from our children.
Each type of interaction causes a characteristic set of earth structures or tectonic features. The adobe flash plugin is needed to view this content. Plate tectonic theory timeline timetoast timelines. Ch 10 plate tectonics explain how sea floor spreading provides a mechanism for continental drift theory of plate tectonics types of plate boundaries causes of plate movements. Since the development of the theory, geologists have had to reexamine almost every aspect of. Describe some of the events and pieces of evidence that led to the theory of plate tectonics. Divergent plate boundary of oceanic plates and continental plates conti. Geology is an evolving science the theory of plate tectonics was just accepted in the 1960s.
Only shallowfocus earthquakes occur along divergent and transform fault boundaries. The evolution of plate tectonics article pdf available in philosophical transactions of the royal society a mathematical physical and engineering sciences 37622. The plate tectonics powerpoint and bundle is the third of three powerpoints which puts wegeners continental drift and the evidence of seafloor spreading together into todays theory of plate tectonics. The structure of the earth, plate tectonics and landforms. The tharpheezen map illustrated the geological features that characterize the seafloor and became a crucial factor in the acceptance of the theories of plate tectonics and continental drift. Anyways, i hope that both you and your students enjoy your download. The americas, eurasia, and africa fit together like a jigsaw puzzle. Plate tectonics ppt plate tectonics structural geology. Ppt plate tectonics powerpoint presentation free to download id. Earth science reference table your best friend in earth science. Temperature range from 5000 f to 7,0000 f, depending how deep you are. Plate tectonics ppt free download as powerpoint presentation.
The lithosphere lithosphere is comprised of the upper mantle and the crust, the outer shell of the earth. A good fit exists between the plate tectonics model and the global distribution of earthquakes. Heat and plate tectonics inside the earth the part of earth we live on is called the crust. Plate tectonics geological and geophysical evidence of plates and plate dynamics gps data allow us to track plate motions a rich geologic record of plate motions over time magnetic stripes geologic evidence of past movement is in the continents paleomag record of movement of plates through different latitudes inclination age and character internal structure, metamorphic grade, etc. A pdf guide to plate tectonics and earthquakes is also available. Divergent boundaries how is the rock pulled at divergent boundaries. Intense geologic activity is concentrated at plate boundaries. Convection currents and evidence of plate tectonics. Abraham ortelius, was the one who came up with the continental drift theory. The lithosphere is broken up into seven very large continental and oceansized plates, six or seven mediumsized. The first presentation you should view is plate tectonic. Earth science plate tectonics interactive powerpoint by the. If you continue browsing the site, you agree to the use of cookies on this website. Plate tectonics plate tectonics is a unifying model that attempts to explain the origin of patterns of deformation in the crust, earthquake distribution, supercontinents, and midocean ridges and that provides a mechanism for the earth to cool.
This powerpoint is designed to help make teaching your ks2 class about tectonic plates as easy as can be. This guide is an outline of the plate tectonic and earthquake seismology powerpoint presentations. The theory explains the how and why behind mountains, volcanoes, and earthquakes, as well as how, long ago, similar animals could have lived at the same time on what are now widely separated continents. History of ocean basins, in which he developed his idea of seafloor spreading, a forerunner of plate tectonics. The guide contains links to totle introduction to plate tectonics and earthquakes teaching resources and a table of contents of teaching resources on this topic. Formed 30 yrs ago, incorporating seismology and paleontology seismology the study of earthquakes.
The lithosphere is divided into ten major plates and a number of smaller plates. Plate tectonics is a theory explaining the structure of the earths crust and the interaction of plates that move slowly over underlying mantle. This is a 20 slide editable powerpoint that focuses on continental drift and plate boundary actions. May be used either as learning aids for teachers of earth science or edited by earth science teachers for classroom use. Powerpoint presentation fault breaks in earths crust where rocks have slipped past each other. The concept of plate tectonics was formulated in the 1960s. In this 3d lesson plan, learn about the general distribution of fold mountains, volcanoes, and earthquakes, and how their distribution is related to movements at plate boundaries. Historical geology examines the origin and evolution of our planet through time. The lithosphere lithosphere is comprised of the upper mantle and the.
Powerpoint presentations introducing fundamental concepts and observations of plate tectonics and earthquakes. However, the lesson can be used with a gcse group as well. Continental drift and plate tectonics university of iceland. Does the entire lithospheric plate transmit stress in the same way. These presentations are large files so downloading may require tens of seconds or even a minute. Wegener proposed that the continents plowed through crust of ocean basins, which would explain why the outlines of many coastlines like south america and africa look like they fit together like a puzzle. Ppt plate tectonic theory powerpoint presentation free. 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. Aug 06, 2012 powerpoint presentations introducing fundamental concepts and observations of plate tectonics and earthquakes. Plate tectonics in this 3d lesson plan, learn about the general distribution of fold mountains, volcanoes, and earthquakes, and how their distribution is related to movements at plate boundaries powerpoint. Just remember, the real deal is much larger and much more detailed, with over 250 slides. This ppt includes the three types of lithospheric plate boundaries and examples, major and mino.
Plate tectonics is the theory that earths outer layer is made up of plates, which have moved throughout earths history. Plate tectonics powerpoint, notes and exam by stephanie. Convergent, divergent, and transform boundaries are illustrated with. The earth is composed of layers of different composition and physical properties, principally the solid central core, the fluid peripheral core, the viscous mantle, and the solid. Earths history should include preplate tectonic and plate tectonic phases beginning less than a billion years ago, according to a team of geoscientists in the journal geology. Plate tectonics is the central unifying theory for geology and geophysics. Rock gets thin in the middle as it is pulled apart. Science cosmology and astronomy earth geological and climatic history plate tectonics. It would take another 50 years for the concept to be accepted. His evidence was that some parts of the world like.
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