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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 5 · 25 questions

TOPIC PRACTICE

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  1. Continents changed position over geological time
  2. Continents change shape daily
  3. Oceans are formed only by rivers
  4. Mountains are formed only by wind
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  1. It shows only political boundaries
  2. It indicates old geometric connection of separated landmasses
  3. It tells ocean salinity
  4. It measures rainfall amount
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  1. Shorelines never change by weather
  2. Shelf is the boundary of modern countries
  3. Shelf shows the real geological continental extension
  4. Shelf is only the home of marine organisms
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  1. It was a mountainous part of Laurasia
  2. It was the ice sheet of Gondwana
  3. It was a river of Tethys
  4. It was the primeval global ocean Panthalassa
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  1. In understanding the background of mountain building
  2. In understanding modern census
  3. In understanding river pollution
  4. In understanding marine tourism
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  1. They are the same country today
  2. They may once have been parts of a connected cold region
  3. They were floating islands in the sea
  4. They were only deserts
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  1. Present direction of rainfall
  2. Direction of population migration
  3. Organized direction of ancient ice movement
  4. Current of seawater
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  1. Because it only flew in air
  2. Because it was a modern marine whale
  3. Because it could cut mountains
  4. Because it was not an organism capable of crossing deep oceans
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  1. Ancient Gondwana relation of southern landmasses
  2. Permanent freezing of oceans
  3. Reverse flow of rivers
  4. Development of modern cities
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  1. It tells daily weather condition
  2. It shows geological continuity across separated continents
  3. It tells the number of marine fish
  4. It tells population density
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  1. It shows only trade routes
  2. It shows only soil colour
  3. It may indicate old source areas and connected landmasses
  4. It shows only modern mining policy
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  1. Drying oceans
  2. Forming fossils
  3. Bending rivers
  4. Moving continents toward the equator
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  1. It was not sufficient to move continents on such a large scale
  2. It was completely unrelated to the Moon
  3. It affected only plants
  4. It did not create water in the sea
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  1. Because it had no evidence
  2. Because evidences were many but the driving force was not adequately explained
  3. Because he did not accept Pangaea
  4. Because he rejected fossils
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  1. Because sima was only atmosphere
  2. Because sial was completely fluid
  3. Because moving through a rigid base was considered physically inconsistent
  4. Because Panthalassa was landmass
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  1. Political boundaries
  2. Agricultural production
  3. Types of rainfall
  4. Lighter continental material and heavier oceanic base
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  1. Development of modern continents and oceanic gaps
  2. Disappearance of rivers
  3. Stopping of Earth
  4. End of atmosphere
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  1. Only modern rail network
  2. Gondwana fossils rocks and glacial evidences
  3. Only maritime trade
  4. Only census data
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  1. Its ancient latitudinal position may have been different
  2. Glacial evidences are always fake
  3. No rock ever formed there
  4. There was never an ocean there
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  1. When it is found at only one place
  2. When it agrees with rock and climate evidences also
  3. When it is found in a modern city
  4. When its colour is bright
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  1. He explained similarities by mobile continents rather than permanent bridges
  2. He called all fossils false
  3. He never accepted continents
  4. He removed oceans
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  1. It gave a possible internal driving mechanism
  2. It rejected Pangaea
  3. It called tillite sea salt
  4. It made fossils modern
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  1. It showed that ocean floor is also dynamic
  2. It showed oceans are fixed ice
  3. It showed fossils are impossible
  4. It showed mountains are liquid
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  1. It was Wegener's main original evidence
  2. It later supported plate movement and seafloor spreading
  3. It was another name of Pangaea
  4. It was only climatic evidence
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  1. Idea of a fixed Earth
  2. Thinking toward a dynamic lithosphere
  3. Only meteorology
  4. Only maritime trade

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