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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 6 · 24 questions

TOPIC PRACTICE

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  1. Continental drift focused on continents and plate tectonics on plates
  2. Both are only weather theories
  3. Both reject fossils
  4. Oceans have no place in both
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  1. Rejecting all evidences without reading
  2. Memorizing only the word Pangaea
  3. Accepting evidences and stating limitation of mechanism
  4. Treating the theory only as a story
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  1. East-west division
  2. Vertical up-down division
  3. River-based division
  4. Division into northern and southern super landmasses
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  1. Pangaea was landmass and Panthalassa was the ocean surrounding it
  2. Pangaea was ocean and Panthalassa was mountain
  3. Both were fossil organisms
  4. Both are modern countries
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  1. Biological evidence
  2. Structural geological evidence
  3. Political evidence
  4. Atmospheric evidence
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  1. Because evidences from different fields strengthen the same conclusion
  2. Because it is only a subject of history
  3. Because geography is not needed in it
  4. Because all evidences are of the same type
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  1. Because it challenged fixed continents and the mechanism was unclear
  2. Because it gave no new idea
  3. Because it called Earth flat
  4. Because it denied oceans
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  1. Insufficient driving force and problem of movement through oceanic floor
  2. Complete absence of fossils and absence of Pangaea
  3. Absence of coastal fit and absence of rock evidence
  4. Absence of climatic evidence and absence of tillite
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  1. Information of present weather
  2. Evidence related to ancient climate
  3. Political weather report
  4. Marine traffic information
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  1. They show similar ancient cold conditions on now separated lands
  2. They increase modern heat
  3. They separate rivers from sea
  4. They only build cities
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  1. Because coastal evidence should be supported by rock fossil and climate evidences
  2. Because coastal fit has no use
  3. Because maps are prohibited in geography
  4. Because coasts are never visible
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  1. Some oceanic gaps developed due to separation of continents
  2. All oceans dried in one day
  3. Oceans formed only from clouds
  4. Oceans are permanently mountains
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  1. They may once have been close or connected
  2. They are currently the same continent
  3. They have no ocean
  4. They are only icebergs
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  1. So that Wegener's original evidences and later evidences are distinguished
  2. So that the question becomes short
  3. So that options become fewer
  4. So that oceans disappear
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  1. Concept of dynamic Earth and mobile continents
  2. Final proof of fixed Earth
  3. Creation of modern weather apps
  4. River cleaning plan
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  1. They are all modern federations
  2. They are considered fragments of the old southern supercontinent
  3. They are the same island today
  4. They are all at the North Pole
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  1. Ordered mention of coastal fit rock similarity fossil distribution and glacial evidence
  2. Only the word Pangaea
  3. Only Wegener's name
  4. Only one map
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  1. Because many of his evidences later proved important in the right direction
  2. Because he gave no idea
  3. Because he called continents fixed
  4. Because he called Panthalassa a country
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  1. River bend
  2. Mountain building
  3. Urbanization
  4. Deforestation
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  1. Similar rock structure and glacial evidence in the same region
  2. Modern name of a river
  3. Population of a city
  4. Daily weather temperature
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  1. Tidal force
  2. Glacial force
  3. Vegetation force
  4. Alluvial force
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  1. Volcanic ash force
  2. Pole-fleeing force
  3. Sea wave force
  4. River deposit force
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  1. The theory had diverse evidences but lacked an adequate physical mechanism
  2. The theory had no evidence
  3. The theory was based only on agriculture
  4. The theory did not mention Pangaea
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  1. It was an evidence-based idea with a flawed mechanism that guided Earth science
  2. It was a superstition without evidence
  3. It was only naming of oceans
  4. It was modern satellite measurement

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