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Subjects

Geography

Evolution of the earth

In this Class 11 Geography topic from “The Origin and Evolution of the Earth,” students trace how Earth formed and changed over geological time. They learn about the early solar nebula, the separation of materials within the young planet, the development of the crust, atmosphere and oceans, and the gradual emergence of life. The topic connects major stages of Earth’s evolution with the geological processes that shaped its present structure.

Medium · Level 2 · 25 questions

TOPIC PRACTICE

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25 questions

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  1. Only modern industry
  2. Only spread of vegetation
  3. Volcanic emissions and early atmosphere
  4. Moon's surface
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  1. Because all volcanoes stopped immediately
  2. Because Earth stopped rotating
  3. Because the core came to the surface
  4. Because water affected heat balance and surface conditions
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  1. It provided a solid base on which landforms later developed
  2. It sent all atmospheric gases into space
  3. It formed the Sun
  4. It instantly made life complex
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  1. Earth always remained like today
  2. Harsh hot conditions gradually changed into a life-supporting system
  3. Life came first and Earth formed later
  4. Oceans never formed
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  1. Condensation
  2. Photosynthesis
  3. Differentiation
  4. Sedimentation
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  1. Formation of core
  2. Solidification of crust
  3. Collision of planetesimals
  4. Development of atmospheric oxygen and ozone
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  1. Maintaining internal heat
  2. Making oceans salt-free
  3. Producing oxygen instantly
  4. Cooling the Moon
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  1. As ice in the core
  2. As water vapour in the atmosphere
  3. As liquid water in modern canals
  4. As salt on mountains
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  1. Availability of modern technology
  2. Presence of dense land forests
  3. Oxygen-poor and chemically different environment
  4. Fully developed ozone layer
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  1. Sufficient cooling of the surface
  2. Ending of all gases
  3. Core coming outside
  4. Solar wind becoming oceans
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  1. Oceans were only gaseous
  2. Liquid water provided a medium for chemical substances to interact and react
  3. Modern humans lived in oceans
  4. Oceans formed before crust
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  1. Gravity decreased and core melted
  2. Oceans dried and crust disappeared
  3. Ozone formed and possibility of complex life increased
  4. Moon broke and Sun cooled
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  1. Oxygen-rich atmosphere like the present
  2. Completely empty space-like condition
  3. Atmosphere made only of ozone
  4. Primitive and oxygen-poor atmosphere
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  1. Moving heavy materials to the centre and retaining gases near Earth
  2. Burning oceans and removing the Moon
  3. Producing oxygen and growing forests
  4. Creating solar wind and breaking crust
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  1. Placing life before crust and oceans
  2. Linking gravity with Earth
  3. Calling oceans part of hydrosphere
  4. Considering crust a solid layer
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  1. Because it later produced rainfall and hydrosphere
  2. Because it formed the core
  3. Because it immediately broke the crust
  4. Because it formed solar wind
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  1. Biodiversity
  2. Density-based differentiation
  3. Photosynthesis
  4. Seasonal change
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  1. Because they ended oceans
  2. Because they made the core solid
  3. Because they also changed atmospheric composition
  4. Because they created solar wind
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  1. Land life would face greater risk from harmful radiation
  2. Oceans would immediately become fresh
  3. Core would come to surface
  4. Gravity would end
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  1. A solid surface provided the base for rainwater accumulation
  2. Oceans formed Earth first
  3. Crust formation created the Sun
  4. Both had no relation
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  1. They preserve evidence of geological events and past conditions
  2. They are only modern construction materials
  3. They completely form the atmosphere
  4. They stop solar wind
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  1. Cooling hydrosphere atmospheric change and biological evolution
  2. Railways industry and trade
  3. Politics currency and cities
  4. Only size of the Moon
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  1. Absence of human civilization
  2. Presence of gases like methane and ammonia
  3. Development of modern cities
  4. Flowing of rivers
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  1. Outgassing supplied water vapour which cooled into rain
  2. Outgassing stopped rainfall forever
  3. Rainfall made volcanoes and formed Earth
  4. Both had no relation
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  1. Because life first needed water atmosphere and a stable surface
  2. Because biosphere created the Sun
  3. Because biosphere formed before crust
  4. Because biosphere is only gas

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