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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.

Hard · Level 3 · 25 questions

Practice questions

01Why is comparing continental shelf margins considered more useful than only comparing coastlines in continental drift?

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02How does the hypothesis of Pangaea connect many evidences in Wegener's theory?

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03If rocks of similar age are found on both sides of the Atlantic what is the strongest meaning in support of Wegener?

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04Why is Mesosaurus fossil considered not just ordinary fossil evidence but a strong clue?

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05What is the most appropriate analysis of Glossopteris fossils in the context of Gondwanaland?

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06What conclusion is formed by reading tillite deposits together on southern continents?

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07Why is the study of direction of glacial striations important in continental drift?

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08How should the presence of coal in Antarctica be read in continental drift?

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09The use of placer gold deposits in Wegener's evidences was based on which logic?

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10What was the main criticism of Wegener's pole fleeing force?

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11On what basis did Wegener propose tidal force and what was its limitation?

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12Why was the idea of continents directly drifting over ocean floor considered doubtful?

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13At what level did plate tectonics improve Wegener's idea?

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14Why was the discovery of sea floor spreading important in the debate on continental drift?

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15India separating from Gondwanaland and moving northward relates to which larger conclusion?

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16Why cannot India Eurasia collision and Himalayan formation be explained only by Wegener's forces?

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17The importance of the sedimentary region of Tethys Sea in Himalayan context is linked with what?

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18What is the most scientific way to understand Laurasia and Gondwanaland?

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19Why does reliability of the theory increase by taking coastline fit and fossil evidence together?

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20Why is independence of geological and biological evidence important in continental drift?

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21If Panthalassa is called a plant fossil what would be the correct criticism?

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22Which combined evidence is most consistent in support of Gondwanaland?

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23In which situation does coastline fit evidence become stronger?

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24What is the main difference while separating Wegener's hypothesis from modern plate tectonics?

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25What is the correct way to link continental drift with paleoclimatic evidence?

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