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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 1 · 25 questions

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  1. All continents were once parts of one united landmass
  2. Oceans always remained in their present shape
  3. The Himalayas are the oldest mountains
  4. The ocean floor is fixed and unchanging
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  1. Tethys
  2. Panthalassa
  3. Laurasia
  4. Gondwanaland
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  1. Gondwanaland
  2. Tethys Sea
  3. Laurasia
  4. Panthalassa
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  1. North America and Europe
  2. Greenland and Siberia
  3. Arctic islands and Japan
  4. South America Africa India Australia and Antarctica
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  1. Jigsaw fit or coastal matching
  2. Tidal force
  3. Pole-fleeing force
  4. Seismic wave
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  1. Present political boundaries
  2. Edges of continental shelves
  3. Direction of ocean currents
  4. Desert boundaries
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  1. They prove recent formation of oceans
  2. They indicate former contact between the two landmasses
  3. They prove lunar tides
  4. They show only climate change
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  1. Widespread glacial condition
  2. Tropical rainforest
  3. Marine coral deposit
  4. Dry volcanic plain
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  1. They stop Earth's rotation
  2. They show the possibility of one ancient ice sheet
  3. They reduce ocean salinity
  4. They explain monsoon origin
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  1. Because it is found only in high mountains
  2. Because it could easily cross deep oceans
  3. Because its fossils are found in Brazil and South Africa
  4. Because it was a modern bird
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  1. Magnetic evidence
  2. Fossil evidence
  3. Tidal evidence
  4. Seismic evidence
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  1. The continents were formerly connected
  2. Fossils flew through air
  3. Oceans never existed
  4. Organisms were always immortal
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  1. Radioactive force
  2. Tidal force
  3. Vegetation force
  4. Glacial force
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  1. Pole-fleeing force
  2. Alluvial force
  3. Non-Coriolis force
  4. Atmospheric pressure force
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  1. It ignored continental shapes
  2. It gave no fossil evidence
  3. Its proposed forces were insufficient for such huge displacement
  4. It did not propose Pangaea
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  1. Africa and Brazil
  2. Laurasia and Gondwanaland
  3. Australia and Antarctica
  4. India and Madagascar
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  1. About 200 million years ago
  2. About 2000 years ago
  3. About 50 years ago
  4. About one billion years later
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  1. Because coastlines change by erosion and deposition
  2. Because both continents are round
  3. Because ocean water is blue
  4. Because maps are never useful
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  1. Climatic evidence
  2. Placer deposit and source area evidence
  3. Volcanic eruption evidence
  4. Ocean salinity evidence
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  1. Complete disappearance of Aravalli
  2. Background of Himalayan formation
  3. Sahara becoming a sea
  4. Antarctica remaining fixed at the equator
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  1. Through rigid oceanic crust
  2. Only within the atmosphere
  3. Only with rivers
  4. In complete empty space
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  1. Glacial tillite in Gondwana regions
  2. Height of sea waves
  3. Distance between modern cities
  4. Colour of river deltas
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  1. Its climate and position may have been different in the past
  2. Rocks were never formed there
  3. All glacial rocks are fake
  4. Solar energy has ended
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  1. He did not provide a convincing physical mechanism for continental movement
  2. He never saw any map
  3. He completely rejected fossils
  4. He considered Earth flat
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  1. Continental drift focused on continents while plate tectonics explains movement of lithospheric plates
  2. There is no difference between them
  3. Plate tectonics treats fossils as wrong
  4. Continental drift was only a weather theory

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