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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.

Expert · Level 2 · 25 questions

Practice questions

01Arthur Holmes's idea of convection currents addressed which weakness of Wegener's theory?

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Answer and explanation

02In Wegener's theory in what sequence is the division of Pangaea understood?

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03Which conclusion is most logical from Wegener's fossil evidence?

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04What does continuity of rock sequences mean in support of continental drift?

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05Palaeomagnetic evidence was not a major original proof of Wegener yet why did it later become important?

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06Why was Wegener's explanation about the ocean floor incomplete in Continental Drift Theory?

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07If the Atlantic Ocean exists today between Africa and South America how would Wegener view it?

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08Which of the following should not be counted among Wegener's original evidences?

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09How does climatic evidence support continental movement in Wegener's theory?

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10The two directional ideas of equatorward movement and westward movement were given to explain what?

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11What is the strongest reason for not treating Continental Drift Theory as mere imagination?

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12Which idea helps explain the ancient relation among Madagascar India and Africa?

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13Which statement is most balanced while criticizing Wegener's theory?

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14What does Pangaea mean in Continental Drift Theory?

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15If similar mountain belts are found on separated continents what conclusion can it support?

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16In Wegener's theory what change in ocean distribution was assumed after Pangaea broke?

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17In Wegener's coastal matching evidence what did modern digital fitting make clearer?

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18How is the multidisciplinary nature of evidence in Continental Drift Theory shown?

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19Why is Wegener's theory considered revolutionary in Earth science?

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20Why is tillite across different Gondwana landmasses a larger proof than a local glacier?

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21In Wegener's theory continental drift was imagined as what type of movement?

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22Why was the tidal force criticized in Continental Drift Theory?

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Answer and explanation

23How does the position of Tethys between Laurasia and Gondwanaland connect with later mountain building?

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24What precaution is most necessary while understanding Continental Drift Theory?

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25What can be considered Wegener's most lasting scientific contribution?

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