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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 3 · 25 questions

TOPIC PRACTICE

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25 questions

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  1. Removal of early light gases
  2. Expansion of biosphere
  3. Sedimentation of rocks
  4. Fish in oceans
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  1. Ocean waves
  2. Density-based separation of materials
  3. Spread of vegetation
  4. Human mining
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  1. Because they gave energy to the Sun
  2. Because they formed the core
  3. Because they also played roles in heat balance and chemical evolution
  4. Because they created solar wind
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  1. Extreme increase of ammonia
  2. Return of helium to Earth
  3. Disappearance of all gases
  4. Sufficient accumulation of oxygen
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  1. It would be difficult to retain gases for long
  2. The core would immediately come out
  3. Oceans would turn into metal
  4. Crust would become living organisms
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  1. Considering only one event as the cause
  2. Understanding only through human history
  3. Viewing it as interconnected physical chemical and biological processes
  4. Considering it an event without sequence
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  1. It increased gravity and held materials more strongly
  2. It cooled Earth immediately
  3. It formed oceans first
  4. It removed all gases
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  1. It removed salt from oceans
  2. It maintained internal heat for a long time
  3. It formed ozone layer immediately
  4. It merged the Moon into Earth
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  1. Because it also involved drying of oceans
  2. Because it involved formation of all gases
  3. Because it formed the whole layered internal structure
  4. Because it formed modern forests
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  1. Colour of atmosphere
  2. Ocean waves
  3. Spread of vegetation
  4. Dense core
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  1. Gases were released from the interior
  2. Oceans were already producing oxygen
  3. Human industries had started
  4. Trees immediately formed the atmosphere
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  1. Because early atmosphere had much heavy water
  2. Because light gases could easily be pushed toward space
  3. Because Earth had modern plants
  4. Because oceans were very deep
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  1. Because it released gases from Earth's interior
  2. Because it created solar wind
  3. Because it changed core into crust
  4. Because it cooled the Moon
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  1. Core cooled and Moon formed
  2. Crust melted and Sun formed
  3. Rainfall occurred and hydrosphere began to form
  4. Oxygen ended and life disappeared
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  1. Fully gaseous surface
  2. Highly burning surface
  3. Fully living surface
  4. Sufficiently cool and stable surface
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  1. They provided a medium for chemicals to meet and react
  2. They turned all rocks into gas
  3. They ended gravity
  4. They stopped solar wind
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  1. They became metals for the crust
  2. They became a base toward origin of life
  3. They became source of solar wind
  4. They formed Moon's orbit
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  1. Life needed liquid water and a chemical medium
  2. Life began first in deserts
  3. No atmosphere was needed for life
  4. Life first formed in modern cities
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  1. Highly developed ozone layer
  2. Oxygen-rich modern atmosphere
  3. Lack of free oxygen and primitive gaseous conditions
  4. Completely empty atmosphere
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  1. Immediate drying of oceans
  2. Core coming to the surface
  3. Formation of solar wind
  4. Accumulation of oxygen in the atmosphere
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  1. Effect of harmful radiation decreased
  2. Earth's gravity ended
  3. Oceans fully became vapour
  4. Crust completely melted
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  1. It made land surface safer from radiation
  2. It made oceans disappear
  3. It immediately changed all organisms into humans
  4. It liquefied the crust
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  1. Only core and Moon
  2. Hydrosphere atmosphere and solid surface
  3. Only solar wind and dust
  4. Only modern rivers and cities
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  1. Life came before solid surface and water
  2. Moon formed after modern humans
  3. Physical and chemical conditions formed first then biological evolution occurred
  4. Ozone layer formed before Earth
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  1. Only formation of Moon
  2. Only depth of oceans
  3. Only temperature of core
  4. Cooling differentiation atmosphere water and biological evolution

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