Find out everything you need to know about it here. Which statement best supports the theory of continental drift quizlet? Abundant evidence supports the major contentions of the seafloor-spreading theory. Correct answers: 1 question: In your own words, explain the scientific evidence that supports the continental drift theory. On the other hand, tectonic movement destroys crust during interaction of the plates. They based their idea of continental drift on several lines of evidence: fit of the continents paleoclimate indicators truncated geologic features and fossils. 2. Dark Matter earned its name because it does not interact at all with the Electromagnetic Force. . Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Fossils - certain fossils preserved in rocks of the same age but from different continents. As magma rises it forces the crust to rise at the ridge. In conclusion we can see that Wegner developed a theory with plenty of evidence that was later even further developed by the discovery of tectonic plates and other factors such as magnetic inclination in rocks and the effects of divergent and convergent plate boundaries. Why do you think Buddhisms ideas about ending suffering might have appealed to the ancient Chinese? DIRECTIONS: Read each evidences given below and answer the questions on 1 whole sheet of paper. Glossopteris was Fossil from fern. Today, the theory of continental drift has been replaced by the science of plate tectonics.The theory of continental drift is most associated with the scientist Alfred Wegener.In the early 20th century, Wegener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 . Wegener specifically used rock composition and mountain ranges to provide evidence of continental drift. what two pieces of evidence did wegener discover that supported the idea of Pangaea? The Himalayas. What types of evidence best supports the theory of plate tectonics? 1. Molten rock material from Earths mantle rises upward to the crests, cools, and is later pushed aside by new intrusions. Wegener said that continents move around on Earth's surface and that they were once joined together as a single supercontinent. What evidence did Wegner use to support his theory of continental drift? Africa has some of the greatest history, and physical geography. Alfred Wegener is credited with developing the continental drift hypothesis. Darwins finches from the Galapagos Islands. If you take a look at the map before the continents drifted away, you find that Mesosaurus is located in the southern parts of Africa and North America. Embryos of four different species. Glossopteris ferns had very heavy seeds that could not move by wind or drift on ocean currents. 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. Access to steamboat The "Wallace Line". Q. In the 1900's, Alfred Wegener presented an argument supporting continental drift. By basing it on evidence, Wegener stated that the mesosaurus can also be found in other continents. As the divergent plates move apart and new magma rises from the mantle it will record the current alignment of the North Pole. You also have the option to opt-out of these cookies. Subjects . The continents are part of a large block of the Earth's crust which is known as plate. Mountains created by colliding continents. The present continents appear to fit together as pieces of a larger landmass. Have no time to work on your essay? By Staff Writer Last Updated March 29, 2020 According to National Geographic, sea floor spreading and plate tectonics indicate that the continents do move or shift, which supports continental drift theory. The Wallace Line. The cookies is used to store the user consent for the cookies in the category "Necessary". What are 4 evidences that support continental drift? This theory has explained the origin of continents and ocean basins. The direction of their magnetization is the same as the direction of Earths magnetic field at the time and place of crystallization. Paleoclimate Data. Enter a Melbet promo code and get a generous bonus, An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. Some of the fossil evidence discovered on the continents includes mesosaurus, lystosaurus, cygnognathus and glossopteris. Do now: Draw a convection current and explain why this happens? Continental drift describes one of the earliest ways geologists thought continents moved over time. Fossil records are strong evidence that the continents do drift. Privacy Policy 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. How does coal in Greenland support the idea of continental drift? Dark Matter accounts for 84% of all the matter in the universe. Another piece of evidence is that fossils of plants, animals and invertebrates have been found on separate continents. It seems likely, though it is still unproven, that this breakup of a single landmass and the drifting of its fragments is merely the latest in a series of similar occurrences throughout geologic time. There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents (2) the occurrence of earthquakes and (3) continental and ocean floor features including mountains volcanoes faults and trenches. The global inspection reveals an imbalance of areas of lands and sea and almost infinite variation of shapes which illustrates the continental and oceanic areas. Fossil EvidenceSee also how to tell which nitrogen is most basic Fossils of similar types of plants and animals in rocks of a similar age have been found on the shores of different continents suggesting that the continents were once joined. The continents were once joined in a super-continent and have moved over time. coal found in cold regions, glacial evidence found in warm regions. This essay wont pass a plagiarism check! Wegener used fossil evidence to support his continental drift hypothesis. His ideas attracted much attention in the 1920s and generated much controversy. List four pieces of evidence for Wegeners hypothesis of continental drift? Over time, the organism decays and the area it occupied is replaced with inorganic rock. 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. What two pieces of evidence did Wegener discover that supported the idea of Pangaea quizlet? Continents are stationary and do not move. It has affected the global climate, the worlds geographical positions and the evolution of animals. What is the five evidence of continental drift? . You can order a unique, plagiarism-free paper written by a professional writer. Despite Wegeners effort to try to prove his theory of continental drift, it was never accepted. Again, for this creature to swim from Africa to Antarctica would have been impossible. The continents we see today are fragments of that supercontinent. If these continents were once united around the south polar region, this glaciation would become explicable as a unified sequence of events in time and space. A graphic of Gondwana. Holmes' theories have continued to be . He was limited by the technology of his time and more evidence to support his claim wasnt available till scientific technology improved and evidence was found of plate tectonics. Grooves and rock deposits left by ancient glaciers are found today on different continents very close to the equator. First samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached and the sediment cover is thinner near the ridge. Oceanic plates are thinner and found under the ocean, they are denser (3.0kgm) than continental plates and consist of basaltic rock. Ultimately, Africa has a beautiful context of life and history behind its luscious trees. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils. Through the theory of continental drift, humans have been able to figure out how the earths crust moves and the causes of volcanoes, earthquakes, oceanic trenches, formation of mountain ranges and other geological occurrences. 4 What is evidence use to prove continental drift? As they are the same density, they break when they collide and are forced upwards instead. Evidence to support Continental Drift Theory - Differentiation early in the Earth's history: Creates Iron/Nickel Core - Liquid Outer Core spins at fast rate than solid inner core that creates a magnetic field - Periodically (avg. In the early part of the 20th century scientists began to put together evidence that the continents could move around on Earths surface. Not consenting or withdrawing consent, may adversely affect certain features and functions. Fossils of the Mesosaurus, an ancient freshwater reptile found in the southern parts of South America and Africa, also indicate that the two continents could have once been one solid continent that drifted apart, since the reptile could not have swum across the ocean. Rocks of Same Age Across the Oceans: The belt of ancient rocks of 2,000 million years from Brazil coast matches with those from western Africa. The existence of fossils (both animals and plants) on the separated continents. As a result of movement of the supercontinent, Pangaea split into two super landmasses namely Laurasia and Gondwanaland. 2022 Sept 27 [cited 2023 Mar 1]. What evidence supports the idea that all the continents were once joined together? Mountains are typically formed when two opposite land masses collide with each other triggering the rock found at the point of collision to fold or bulge upwards. 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. Which is an example of geological fit evidence? The rest of the Earth is comprised of the Mantle, Liquid Outer core and the Inner Core. 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. What are the three pieces of evidence for continental drift? However we now know that it is not just the continents that move so a more correct term is plate tectonics . What does Pangaea mean in Greek? This cookie is set by GDPR Cookie Consent plugin. Gondwanaland contained all the masses in the southern hemisphere such as Africa, Antarctica, South America and Australia. 2. How is plate tectonics supported by the apparent fit of the continental coastline? Apparent Fit. Fossils are the stongest evidences of plate tectonics. So, his theory is proved by the fact that the freshwater reptiles could not swim across the ocean waters, hence, their distribution on every continent. What evidence supports the idea that all the continents were once joined together? This is a reptile that comes from the Early Permian of South Africa and South America. B. Continental drift describes one of the earliest ways geologists thought continents moved over time. South America and Africa contain fossils of animals found only on those two continents, with corresponding geographic ranges. 6014 , CY. Mesosaurus are fossils originating from aquatic freshwater reptiles. How did Alfred Wegener come up with the idea of continental drift? 3. This indicates that the continents were once fixed together and drifted apart over time. Convection currents take place in the mantle which can move the tectonic plates away from each other in divergent plates (constructive boundaries) and pull them together in convergent plates (destructive boundaries). ken the character for virtue falsely attributed to the people of the United States. The technical storage or access that is used exclusively for anonymous statistical purposes. The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user. 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. Some of the fossil evidence discovered on the continents includes mesosaurus, lystosaurus, cygnognathus and glossopteris. Fossils of similar types of plants and animals in rocks of a similar age have been found on the shores of different continents, suggesting that the continents were once joined. It suggested that those land areas had in the past been connected. 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. Evidence of Continental Drift. Now, looking at the current map after drifting of the continents, Cygnognathus is situated in Africa and South America. According to the modern day map, these continents are far apart. There are also several smaller plates such as the Scotia, Nazca and Cocos. This essay is available online and was probably used by another student. 2. The fossils of these organisms are found on lands that are now far apart. Evidence for Continental Drift. 1. What is thought to influence the overproduction and pruning of synapses in the brain quizlet? 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 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. What are six pieces of evidence for the continental drift theory? What evidence indicated scientists that the continents were once connected? To support his theory Wegener pointed to matching rock formations and similar fossils in Brazil and West Africa. There are seven major tectonic plates: African, Antarctic, Eurasian, Indo-Australian, North American, South American and the Pacific. Ferns had very heavy seeds that could not move by wind or drift on several of... Matter accounts for 84 % of all the continents that move so a more term! 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