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Subjects

Geography

Continental Drift Theory and its evidence

In Class 11 Geography, this topic explains the Continental Drift Theory within the chapter “Distribution of Oceans and Continents.” Students learn Alfred Wegener’s idea that the continents were once joined as Pangaea and gradually moved apart. They examine evidence such as the matching shapes of coastlines, similar fossils, continuous rock formations, mountain belts, and past glacial deposits found on continents now far apart. The topic also introduces the theory’s limitations and its importance in the later development of plate tectonics.

Medium · Level 5 · 25 questions

Practice questions

01According to Wegener the initial stage of continental drift was linked with which joined landmass?

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02What does the concept of Panthalassa clarify?

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03The position of the Tethys Sea shows which geological division?

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04What does Gondwanaland mean in Wegener's theory?

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05Why was the matching of African and South American coasts useful for Wegener?

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06What is the main reason for not treating jigsaw fit as complete proof alone?

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07Rocks of similar age found on both sides of an ocean are what type of evidence?

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08What conclusion follows from continuity of mountain ranges in continental drift?

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09Why does the importance of Mesosaurus fossil increase?

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10The distribution of Glossopteris is most associated with which old landmass?

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11What does the occurrence of fossils like Lystrosaurus on separate landmasses indicate?

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12Study of tillite strengthens which aspect of continental drift?

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13Which idea is strengthened by similar glacial deposits on southern continents?

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14Similar direction of old glacial striations helps explain what?

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15The presence of coal in Antarctica supports which type of explanation?

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16The example of placer deposits is placed under which type of evidence?

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17What is indicated by comparing placer gold in Ghana with source areas in Brazil?

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18With what did Wegener link pole fleeing force for continental movement?

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19Wegener's tidal force was related to the attraction of what?

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20Why was Wegener's theory mainly criticised?

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21Why was Wegener's idea of continents drifting over ocean floor later considered weak?

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22Which weakness of Continental Drift Theory did plate tectonics better address?

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23How did the discovery of sea floor spreading help Wegener's idea?

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24If a question gives both fossil and old climate evidences what would be the combined conclusion?

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25Which option correctly matches evidence and example?

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