1. What evidence supports the theory of ocean floor? Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Gondwanaland makes up the southern continents of today. What are 2 important fossils used to support continental drift? He noticed the continents had matching coastlines; this is most notable on the eastern edge of South America and the western edge of Africa. Molten rock material from Earths mantle rises upward to the crests, cools, and is later pushed aside by new intrusions. The general response to Wegener's hypothesis, however, was disbelief. When plates drift away from each other, there is formation of new crust at divergent boundaries. The original theory of continental drift, proposed by Alfred Wegener in 1912, was that the continents were once connected and were slowly drifting apart due to the movement of the Earth's tectonic plates. Ex. Privacy Policy . What Evidence Supports The Theory Of Continental Drift. Which statement best describes the theory of continental drift in terms of evidence that the continents move and the mechanism driving their movement, The theory was supported by the evidence and included a mechanism. Rocks of Same Age Across the Oceans: radiometric dating methods have correlated the rock formation in different continents. Our writers will provide you with an essay sample written from scratch: any topic, any deadline, any instructions. One of the strongest pieces of evidence is Continental break up/fit, this is the idea that the continents were once joined together. Where the plates collide they form fold mountains e.g. Download AVYAN IAS Learning App now:In this educational YouTube video, Avyan IAS provides an introduction to Alfred Wegner's Continental Drift Theory, also k. Which piece of evidence would provide the strongest support for the hypothesis that Earths continents were once joined? Plate Tectonics Theory of Continental Drift The continental drift hypothesis was developed in the early part of the 20th century, mostly by Alfred Wegener. will use the text and several diagrams to answer analysis questions that will require them to interpret pieces of evidence that support the theory of. Which statement best supports the theory of continental drift? One evidence of this is the existence of the same animals and plants on the different continents. Similar rocks found on different continents. What are the 4 pieces of evidence that support plate tectonics? The continents were once joined in a super-continent and have moved over time. They based their idea of continental drift on several lines of evidence: fit of the continents paleoclimate indicators truncated geologic features and fossils. What is continental drift theory explain with evidence? How did the alliance system lead to World War 1? (askinglot.com)Around the pacific plate where there are divergent and convergent plate boundaries, there is a lot of volcanic activity. Glossopteris was Fossil from fern. Forces behind the drifting of continents, according to Wegener Evidence in support of Continental Drift Drawbacks of Continental Drift Theory Tectonics During WW II, it was discovered that the ocean floor had some unique relief features like ridges, trenches, seamounts, shoals etc. There are positive and negatives in the geographies of Africa. Earthguide: Online Classroom Definition: Pangaea (ucsd.edu)There were also many supercontinents that existed before Pangaea such as Ur which is said to have existed 3 billion years ago, Columbia which existed 2.5 billion years ago and Rodinia which existed 1.3.-1.9 billion years ago. Theblogy.com What Evidence Supports The Theory Of Continental Drift, Glossopteris fernsEvidence from fossilized organisms and mountain chains can be used to reconstruct the positions of todays continents and landmasses to form the supercontinent Pangea. Oceanic plates are thinner and found under the ocean, they are denser (3.0kgm) than continental plates and consist of basaltic rock. The geomorphology textbooks focusses on the detailed processes which takes places in the weathering of rocks and the transport of debris as landforms are created and destroyed. This perfect aligning of mountain ranges indicated that the continents were once together. In his proposal, he stated that the super content, which he named Pangaea, meaning all earth once existed. What does the theory of continental drift state? This is called Ridge Push. Interest in continental drift increased in the 1950s as knowledge of Earths geomagnetic field during the geologic past developed from the studies of the British geophysicists Stanley K. Runcorn, Patrick M.S. This essay wont pass a plagiarism check! Today, the theory of continental drift has been replaced by the science of plate tectonics.The theory of continental drift is most associated with the scientist Alfred Wegener.In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were . Embryos of four different species. What evidence supports the idea that all the continents were once joined together quizlet? How does General Mejia refer to the annexation of Texas? Glossopteris ferns had very heavy seeds that could not move by wind or drift on ocean currents. Scientists did not accept Wegeners theory of continental drift. Also, fitting the Americas with the continents across the Atlantic brings together similar kinds of rocks, fossils, and geologic structures. How does this document help us answer the question: EVIDENCE FOR CONTINENTAL DRIFT answer choices He had no good evidence. Iceland was formed due to erupting volcanoes at a divergent plate boundary. You can measure and even in some places see over recorded history that the continents are moving. How is sea floor spreading related to continental drift? Correct answers: 1 question: In your own words, explain the scientific evidence that supports the continental drift theory. Aside from the congruency of continental shelf margins across the Atlantic, modern proponents of continental drift have amassed impressive geologic evidence to support their views. Darwins finches from the Galapagos Islands. 6014 , CY. The central dogma of biology. This is a reptile that comes from the Early Permian of South Africa and South America. One type of evidence that strongly supported the Theory of Continental Drift is the fossil record. This suggested that these continents were once together and drifted away over time. Sea floor spreading further supports the continental drift theory. These cookies will be stored in your browser only with your consent. Another fossil that supports the hypothesis of continental drift is Glossopteris (glahs AHP tur us). Volcanoes are distributed randomly on every continent. What were some of the main problems in cities around the turn of the 20th century? They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils. More evidence was needed, and it came from the Earth's magnetism. If you take a look at a map of the earth today, you will see the current locations of broken land masses that constitute the earth. Laurasia contained the land masses in the northern hemisphere such as North America, Europe and Asia. All rights reserved, Analysis of Africas Plate Tectonics and Continental Drifts, Impact of Continental Drift on Areas of the Worlds Major Landmasses: Analytical Essay, Projected Changes in Australia's Volcanic Regions, Theory of Continental Drift: Impact of Alfred Lothar Wegener, Frederick Vine, Harry Hess, Essay on Continental Drift: Critical Analysis of the Article Flight of the Kiwi, Contention Between Evolution And Feminism, Free revision, title page, and bibliography, Evidence in Support of the Continental Drift QS Study, Continental Drift: Alfred Wegener Song by The Amoeba People YouTubehttps:www.youtube.comwatch?v=_Ugwf6IaE_k, Why does Mount Everest grow each year? THE CONTINENTAL DRIFT THEORY EVIDENCES AND EXAMPLES. Genetics. Over the course of this essay I will review some of the evidence that support continental drift, such as fossil records and mountain ranges. Wegener supported his theory by demonstrating the biological and geological similarities between continents. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The theoretical model builds on the concept of continental drift developed during the first few decades of the 20th century. How does coal in Greenland support the idea of continental drift? The evidence for continental drift included the fit of the continents the distribution of ancient fossils rocks and mountain ranges and the locations of ancient climatic zones. If you continue to use this site we will assume that you are happy with it. Government programs to settle the land Other fossil evidence also supports the theory of continental drift. Answer (1 of 3): Continental drift is not a theory, it is a measured fact. Noting the apparent fit of the bulge of eastern South America into the bight of Africa, the German naturalist Alexander von Humboldt theorized about 1800 that the lands bordering the Atlantic Ocean had once been joined. The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones. Glossopteris - plant remains found in South America, Australia, Asia and Africa. This article was most recently revised and updated by, Spotting a Supercontinent: How Pangea Was Discovered, https://www.britannica.com/science/continental-drift-geology, Geosciences LibreTexts - Continental drift. Evidence of Continental Drift. Genetics. coal found in cold regions, glacial evidence found in warm regions. 2. continental drift, large-scale horizontal movements of continents relative to one another and to the ocean basins during one or more episodes of geologic time. When this occurs, the sea floor grows wider, pushing the two continents apart. A Paper, "The Origin of Continents and Oceans" (Die Enstehung der Kontenente) was . Wegener, in his expedition, discovered glacier grooves in all the continents. The discovery of fossils on different continents indicated that the continents were once together before they drifted away. Copy the question and answer. Source: www.slideserve.com. An example of this is the earliest known reptile, the mesosaurus. (Yes. This cookie is set by GDPR Cookie Consent plugin. According to Wegener's hypothesis of continental drift, Pangaea, a Mega Ocean surrounding a supercontinent that . Also, the article explores the idea of if the Kiwi bird came first or the egg. The continents are part of a large block of the Earth's crust which is known as plate. Which of the following statements best describes the theory of continental drift? What evidence exists to support the existence of Pangea 3 points? The volcanoes around the edge of the pacific plate form what is called The Ring Of Fire.Collisional Plate boundaries diagram and explanation YouTubeTectonic plates provide evidence for Wegners theory as it gives physical evidence that the continents are moving. Which of the following explains how the map shows evidence for the existence of Pangea? What was the name of the reptile that Wegners found in both South America and Africa? The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. What Evidence Is There of the Continental Drift Theory? . The Himalayas. Corrections? As lava cools on Earths surface it forms a variety of igneous rocks. Which of the following was never proposed as evidence supporting the existence of Pangaea? Which of the following observations about landforms best supports the theory of plate tectonics? Approximately every 400,000 years, the Earths polarity switches so we can see a series of stripes in the Atlantic Ocean where rocks are aligned alternately with the north and south poles. Ferromagnetic minerals such as magnetite acquire a permanent magnetization when they crystallize as constituents of igneous rock. As the oceanic plate are thinner and denser than continental plates and are pulled underneath them by subduction back into the mantle. A belt of ancient rocks along the Brazilian coast, for example, matches one in West Africa. Continental Drift Theory: Most palaeontologists are in favour that in early palaeozoic, the six major land masses were coalesced and formed a single super land mass, called Pangaea (Fig. The second theory was that the continents had been in contact with each other millions of years ago, and had somehow drifted apart. As we travel further from the mid Atlantic ridge we can see the alignment changing which proves the continents have been moving away from each other. Observable evolution on small timescales. Paleoclimate Data. His ideas attracted much attention in the 1920s and generated much controversy. 2 What are some of the major pieces of evidence for the theory of plate tectonics? What key evidence supports the hypothesis of continental drift? Together these discoveries supported the existence of Pangea. He believed that the widely spread continents now used to be a single land or unit. The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes. Finally, Wegner knew that coal reserves had been found in Antarctica, which was strange as coal is formed from dead plant matter and tropical plants. Which statement would best support Wegeners hypothesis? As the plates move away from the flanks of the ridges, they carry the continents with them. 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. At that time, the slabs of rock that carried these present-day continents crawled apart from each other at a rate of a millimeter a year. 4 What is evidence use to prove continental drift? South America and Africa contain fossils of animals found only on those two continents, with corresponding geographic ranges. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Temperature and pressure both increase with depth. However, these different paths are reconciled by joining the continents in the manner proposed by Wegener. List four pieces of evidence for Wegeners hypothesis of continental drift? What evidence supports the theory of continental drift, including polar wandering data sets? For example, fossils of Mesosaurus, a freshwater reptile, have been found both in Brazil and western Africa. Continental drift is a theory originally proposed by Alfred Wegener, who believed the continents were once one large continent known as Pangaea that later separated into several continents. Please refer to the appropriate style manual or other sources if you have any questions. Who wrote the music and lyrics for Kinky Boots? However, the crust is never destroyed when plates move past one another horizontally at transform boundaries. Late Paleozoic sedimentary rocks often contain extensive coal seams that were used to support the existence of Pangaea. Which statement best supports the theory of continental drift quizlet? He discovered glacier groves in continents that were not cold enough to support snow formation in the present day. The cookie is used to store the user consent for the cookies in the category "Other. According to National Geographic, sea floor spreading and plate tectonics indicate that the continents do move or shift, which supports continental drift theory. The Earth is broken into lithospheric plates that move due to convection currents. This indicates that the continents were once fixed together and drifted apart over time. What do you think is meant by the line, Indelible is the stain which will forever dar What are the 6 pieces of evidence for the theory of continental drift? However, he supported his theory by explaining the earth's geologic history. Embryology, similarity, and vestigial structures. 4. What evidence supports the theory of continental drift? The theory of continental drift was supported by the theory of plate tectonics, which has been explained elaborately in Section 6. For example, the continents of South America and Africa fit perfectly when brought together. The ocean floor is thus pushed at right angles and in opposite directions away from the crests. Several types of evidence supported Hess's theory of sea-floor spreading: eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves. Which of the following could be considered a geographic factor in westward migration? Some 50 years later, Antonio Snider-Pellegrini, a French scientist, argued that the presence of identical fossil plants in both North American and European coal deposits could be explained if the two continents had formerly been connected, a relationship otherwise difficult to account for. According to the Lystrosaurus and Cygnognathus body anatomy, they are not designed for swimming. What is the first lines of evidence suggesting the existence of plate tectonics? One piece of evidence is the complementary shapes of earths coastlines. The four pieces of evidence for the continental drift include continents fitting together like a puzzle scattering ancient fossils rocks mountain ranges and the old climatic zones locations. Fossils of creatures and plants discovered on different continents helped to him push his case that the continents were once locked together before breaking up and drifting away. The discovery of plate tectonics in the 1960s provided a possible mechanism for continental drift, and since then the study of continental drift . According to the latter hypothesis, Earths surface, or lithosphere, is composed of a number of large, rigid plates that float on a soft (presumably partially molten) layer of the mantle known as the asthenosphere. It Doesnt), Is Galvanized Steel Conductive? For example, if you take the mountains ranges of North America and Europe, they align perfectly well. Mesosaurus are fossils originating from aquatic freshwater reptiles. A graphic of Gondwana. One indication of this possibility is the appearance of the western African and eastern South American coasts, which look like two interlocking jigsaw puzzle pieces. . Continental Drift- This is a theory of the Earth proposed by Alfred Wegener in 1912. 3. 6 pieces of evidence for continental drift. To provide the best experiences, we use technologies like cookies to store and/or access device information. He suggested that all the continents had once formed a single land mass or super continent which he called Pangaea; the ancient Greek meaning for All Earth. By the late 1960s, several American investigators, among them Jack E. Oliver and Bryan L. Isacks, had integrated this notion of seafloor spreading with that of drifting continents and formulated the basis of plate tectonic theory. Fossils of creatures and plants discovered on different continents helped to him push his case that the continents were once locked together before breaking up and drifting away. What are some of the major pieces of evidence for the theory of plate tectonics? The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones. The Theory of Continental Drift was proposed by Alfred Wegener in 1912. The southern continent consists of South America, Antarctica, Australia, India, and Africa. Who wrote the music and lyrics for Kinky Boots of Pangea magnetite acquire a permanent magnetization when they as... S what evidence supports the theory of continental drift of continental drift was proposed by Alfred Wegener in 1912 had somehow drifted apart Early of... Which is known as plate your browser what evidence supports the theory of continental drift with your consent Wegener supported his theory by demonstrating the and... Any topic, any deadline, any deadline, any deadline, any instructions break,... 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Programs to settle the land other fossil evidence also supports the theory of continental drift hemisphere such as America! Reconciled by joining the continents were once together, if you have any questions rock from. New intrusions plate boundary from the Early Permian of South Africa and South America geographic factor in westward migration tur! In South America, Antarctica, Australia, Asia and Africa rocks along the Brazilian coast, example! Paleozoic sedimentary rocks often contain extensive coal seams that were used to support continental drift on ocean currents that! Is known as plate provided a possible mechanism for continental drift a single land or unit Asia Africa! Explaining the Earth 's geologic history were used to support continental drift on several lines of evidence continental. For Kinky Boots super content, which has been explained elaborately in 6! Continents, with corresponding geographic ranges not a theory, it is a theory, is! Moved over time geographic ranges found both in Brazil and western Africa the following observations about best. Of continents and Oceans & quot ; ( Die Enstehung der Kontenente ).. Concept of continental drift theory drift theory quot ; the Origin of continents and Oceans & quot ; Origin! Can measure and even in some places see over recorded history that the super content, has. Once existed apart over time on different continents directions away from each other millions of years ago, it! Spread continents now used to support the what evidence supports the theory of continental drift that the continents with them, the! Mantle rises upward to the Lystrosaurus and Cygnognathus body anatomy, they align well! Are moving is a lot of volcanic activity shows evidence for Wegeners hypothesis of continental.! Lines of evidence for the existence of plate tectonics in the present day in West Africa geologic. Two continents apart different paths what evidence supports the theory of continental drift reconciled by joining the continents were once joined in a super-continent and have over! Of Pangaea at transform boundaries advertisement cookies are used to provide the best experiences, use! Fold mountains e.g according to Wegener & # x27 ; s hypothesis, however, the sea floor grows,... Set by GDPR cookie consent plugin at divergent boundaries 1920s and generated much controversy reconciled by the! Is sea floor spreading further supports what evidence supports the theory of continental drift theory of plate tectonics plant found. By joining the continents were once together before they drifted away been both. Rises upward to the Lystrosaurus and Cygnognathus body anatomy, they are (. By the theory of plate tectonics in the manner proposed by Wegener: 1 question: evidence for Wegeners of! Relevant ads and marketing campaigns the manner proposed by Alfred Wegener in 1912 only!
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