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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 2 · 25 questions

TOPIC PRACTICE

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  1. It is correct because there was no evidence
  2. It is wrong because evidences existed but driving force was weak
  3. It is correct because Pangaea did not exist
  4. It is wrong because he explained only modern politics
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  1. In understanding Pangaea breakup and present continental distribution
  2. In daily weather forecast
  3. In measuring population density
  4. In knowing river salinity
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  1. With widening caused by separation of Africa and South America
  2. With northward drift of Tethys
  3. With Pangaea becoming an ocean
  4. With Gondwanaland remaining fixed
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  1. Rock similarity is based on age and structure of rocks while fossil similarity is based on ancient organisms
  2. Both are based only on air pressure
  3. Both are based only on modern cities
  4. Rock similarity is based only on organisms and fossil similarity only on rocks
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  1. Continents drifted over long geological time
  2. Similar fossils may indicate old connection
  3. Continents reached present positions in one day
  4. Pangaea was a joined landmass
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  1. Comparison of coastlines rocks fossils and climatic clues of different continents
  2. Study of only one city
  3. Measuring only present temperature
  4. Observing only commercial income
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  1. Urbanisation of Laurasia
  2. Glacial evidence linked with Gondwanaland
  3. Fossil evidence of Panthalassa
  4. Mineral evidence of Tethys
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  1. As gradual long term drift
  2. As daily weather event
  3. As man made boundary
  4. As instant drying of sea
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  1. Pole fleeing and tidal forces were proposed but considered insufficient
  2. Wegener gave no force and everyone accepted the theory immediately
  3. Only river force was suggested and proved sufficient
  4. Only fossil force was suggested and sufficient
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  1. Testing one conclusion from different sources
  2. Depending only on assumptions
  3. Making only political decisions
  4. Observing only present weather
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  1. It advanced the idea of mobile continents
  2. It formed background for plate tectonics
  3. It declared all evidences unnecessary
  4. It promoted discussion on old continental connection
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  1. Presence of similar fossils on distant continents
  2. Presence of similar present cities
  3. Use of same currency
  4. Similar road routes
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  1. Glossopteris
  2. Placer deposits
  3. Tethys Sea
  4. Pole fleeing force
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  1. Tethys lay between Laurasia and Gondwanaland while Panthalassa surrounded Pangaea
  2. Tethys and Panthalassa were both plants
  3. Tethys was Pangaea and Panthalassa was Gondwanaland
  4. Both are modern cities
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  1. Coastline fit
  2. Placer gold
  3. Tillite deposits
  4. Pole fleeing force
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  1. It shows old climatic zones
  2. It may indicate former latitudinal position
  3. It is daily prediction of today's weather
  4. It can link with glacial and coal clues
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  1. The theory had strong comparative evidence but weak movement mechanism
  2. The theory had no evidence at all
  3. The theory did not mention continents
  4. The theory called Pangaea a modern city
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  1. Pangaea is a concept and Mesosaurus is fossil evidence
  2. Mesosaurus is an ocean and Pangaea is a fossil
  3. Tillite is a city and Tethys is a plant
  4. Panthalassa is a glacial striation and Laurasia is a mineral
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  1. Glossopteris fossils and glacial deposits on southern continents
  2. Modern cities and roads
  3. Present language and currency
  4. Sea waves and market price
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  1. Plate tectonics
  2. Monsoon theory
  3. Population theory
  4. Agricultural location theory
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  1. Only coastline fit is completely sufficient
  2. Rock similarity may show old relation
  3. Fossil evidence may show continental connection
  4. Glacial evidence shows old climate
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  1. Continental positions change over geological time
  2. Continents form and vanish daily
  3. Oceans dry in one day
  4. Fossils form instantly
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  1. Similar fossils were evidence but driving force was weak
  2. There was no evidence and force was complete
  3. There was no coastline evidence and Pangaea was ocean
  4. Tillite was political evidence and Tethys was a city
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  1. Tidal force was one of the driving forces proposed by Wegener
  2. Mesosaurus fossils were evidence that continents had once been connected
  3. Tillite deposits were evidence of ancient glaciation
  4. Mesosaurus was the force that moved the continents
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  1. It gave the idea of mobile continents through evidences but the mechanism was later clarified by plate tectonics
  2. It proved Earth completely fixed
  3. It rejected all geological evidence
  4. It explained only modern politics

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