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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.

Hard · Level 2 · 25 questions

TOPIC PRACTICE

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Up to 25 questions from this page. Select your focus, then start.

25 questions

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  1. They are useful only for building construction
  2. They control the movement of oceans
  3. They eliminate Earth's gravity
  4. They preserve clues about ancient surfaces, atmosphere and life
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  1. They increased free oxygen in the atmosphere
  2. They made the core metallic
  3. They created solar wind
  4. They made oceans first
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  1. Because layers formed only by rainfall
  2. Because density based material separation was also necessary
  3. Because ozone formed the core
  4. Because life came first
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  1. Solid crust
  2. Heavy metal in core
  3. Secondary atmosphere and water vapour source
  4. Existence of gravity
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  1. A liquid chemical medium was not available
  2. Gravity was absent
  3. Moon was absent
  4. Metals were absent
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  1. Because solid surface water and atmosphere had to form first
  2. Because biosphere made Earth
  3. Because biosphere was only in the core
  4. Because ozone was not needed before life
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  1. It stopped core formation
  2. It opened the way for complex life and ozone protection
  3. It created solar wind
  4. It instantly vaporised oceans
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  1. Life formed first and other systems later
  2. The systems were unrelated
  3. Physical and chemical bases formed before life
  4. The core performed photosynthesis
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  1. Explanation of later oxygen accumulation by photosynthesis
  2. Explanation of Earth's gravity
  3. Explanation of core formation
  4. Presence of solar wind
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  1. Internal heat then outgassing then water vapour then rainfall
  2. Rainfall then core then solar wind then Earth
  3. Ozone then oceans then first atmosphere
  4. Humans then crust then planetesimals
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  1. More water storage
  2. Increase of gravity
  3. Lack of oxygen and ozone protection
  4. Heavy core
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  1. Outgassing
  2. Density based differentiation
  3. Photosynthesis
  4. Solar wind
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  1. Volcanic activity linked with internal heat
  2. Ocean waves
  3. Modern weather forecasting
  4. Pollination
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  1. Solar wind and ozone
  2. Sufficient cooling and surface stability
  3. Core and nickel
  4. Methane and ammonia
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  1. Because early carbon dioxide came from natural outgassing
  2. Because carbon dioxide never existed
  3. Because carbon dioxide is only ozone
  4. Because it is metallic part of core
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  1. Oceans and later organisms kept changing gas composition
  2. Gravity had ended
  3. Earth had stopped rotating
  4. Core had come to the surface
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  1. How Earth became life supporting
  2. What is the name of the core
  3. What is the meaning of hydrosphere
  4. What is ozone
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  1. In Earth's core
  2. On land surface
  3. In solar wind
  4. In Moon's orbit
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  1. Because life needed water atmosphere temperature and protection
  2. Because oceans were unrelated to life
  3. Because biosphere is only in core
  4. Because life formed in solar wind
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  1. It happened suddenly due to one cause
  2. It was only biological evolution
  3. It resulted from gradual physical chemical and biological processes
  4. It was only ocean formation
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  1. Memorising only definitions
  2. Treating every event as separate and unrelated
  3. Understanding cause effect sequence and system interaction together
  4. Making only a list of names
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  1. Dense metallic core
  2. Ozone layer
  3. Surface rainfall
  4. Photosynthesis
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  1. Because solid rocks bind materials quickly
  2. Because materials could move in the fluid state
  3. Because ozone pulled materials
  4. Because oceans formed the core
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  1. Releasing internal gases outward
  2. Forming oceans first
  3. Turning all metals into gas
  4. Forming ozone first
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  1. They would immediately become ozone
  2. They could remain near Earth for longer
  3. They would become oceans
  4. They would become metals in the core

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