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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 5 · 25 questions

TOPIC PRACTICE

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  1. Because shelf margin shows the real edge of landmass more steadily
  2. Because shelf is found only in rivers
  3. Because coastline never changes
  4. Because shelf is a type of fossil
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  1. It explains only present climate
  2. It links coastline rock fossil and climatic similarities with an old joined landmass
  3. It denies all oceans
  4. It calls continents man made
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  1. It surrounded Pangaea from all sides
  2. It was another name of Panthalassa
  3. It was located between Laurasia and Gondwanaland
  4. It was the fossil area of Mesosaurus
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  1. Both were plant fossils
  2. Both were continental forces
  3. Panthalassa was part of Gondwanaland
  4. Panthalassa surrounded Pangaea and Tethys was the middle sea
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  1. When similar rock and fossil clues are also found in the same region
  2. When only map colour is similar
  3. When present languages are similar
  4. When number of cities is similar
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  1. That fossils always form on mountains
  2. That distant continents always remained completely separate
  3. That oceans have no water
  4. That rocks never change
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  1. It shows only present vegetation
  2. It measures pole fleeing force
  3. It shows similar plant fossil distribution across many southern landmasses
  4. It shows salinity of Panthalassa
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  1. They show modern farming methods
  2. They show present ocean depth
  3. They show speed of tidal force
  4. They support old biological contact of separate landmasses
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  1. They indicate old glacial environment and possible joined landmass
  2. They show planning of modern cities
  3. They prove ocean salinity
  4. They make Panthalassa a fossil
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  1. They show all continents are still joined today
  2. They indicate glacial activity on an old joined southern landmass
  3. They show only present monsoon
  4. They prove Pangaea was an ocean
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  1. Present marine salinity
  2. Modern industry
  3. Possibility of old warm vegetated environment
  4. Daily snowfall
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  1. Fossil distribution argument
  2. Coastline colour argument
  3. Tidal force argument
  4. Argument of mineral source similarity and old land connection
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  1. It could not provide sufficient mechanical force to move continents
  2. It fully proved coastline fit
  3. It was another name of Mesosaurus
  4. It measured depth of Panthalassa
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  1. They told the age of fossils
  2. Their attraction was considered the basis of tidal force
  3. They formed the Tethys Sea
  4. They kept Gondwanaland fixed
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  1. Because ocean floor was considered a resistant solid medium
  2. Because oceans are made only of gas
  3. Because continents have no rocks
  4. Because fossils are found only in air
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  1. Absence of evidences
  2. Unclear mechanism of continental movement
  3. Lack of the term Pangaea
  4. Absence of fossils
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  1. It gave basis to consider ocean floor mobile
  2. It rejected all fossils
  3. It called Pangaea a modern city
  4. It proved continents completely fixed
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  1. Monsoon wind theory
  2. Plate tectonics
  3. River erosion theory
  4. Demographic transition theory
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  1. They were foundations of modern cities
  2. They were waves of Panthalassa
  3. They are linked with later collision and mountain building context
  4. They were wings of Mesosaurus
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  1. It helps understand north south division of Pangaea and present distribution
  2. It gives daily temperature
  3. It gives colour of river water
  4. It ends tidal force
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  1. Mesosaurus is driving force and tidal force is fossil
  2. Pole fleeing is proposed cause and Mesosaurus is fossil evidence
  3. Tillite is tidal force and Pangaea is plant
  4. Panthalassa is glacial striation and Tethys is mineral
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  1. They strengthen the old connection hypothesis from different sources
  2. They limit the theory only to weather
  3. They prove continents fixed
  4. They make Panthalassa a fossil
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  1. Glacial deposits show old climatic zones
  2. Coal may indicate old vegetated environment
  3. Paleoclimate is today's daily weather forecast
  4. Glacial striations may indicate old glacier flow
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  1. Pangaea is explanatory concept and Mesosaurus is fossil evidence
  2. Both are oceans
  3. Both are tidal forces
  4. Both are glacial deposits
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  1. Glossopteris tillite and southern glacial marks
  2. Modern cities and industries
  3. Panthalassa and modern trade
  4. Tidal force and population

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