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ICSE Class 9 Geography — practice by topic

Browse 87 questions across 4 Geography topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Geography topics

Atmosphere (37)Structure of the Earth (27)Hydrosphere (22)Earth as a Planet (1)

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The lowermost layer of the atmosphere is the:Read the answer and worked solution →The ozone layer is contained in the:Read the answer and worked solution →All changes in climate and weather take place in the:Read the answer and worked solution →The highest layer of the atmosphere is the:Read the answer and worked solution →

Worked practice questions

The lowermost layer of the atmosphere is the:

  1. Troposphere
  2. Mesosphere
  3. Ionosphere
  4. Exosphere
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Correct answer: A. Troposphere

1. The atmosphere is layered by temperature conditions. 2. The troposphere is the lowermost of these layers. 3. We live inside it, at the bottom of the air ocean. _Source: syllabus Geography, 'Composition and Structure of Atmosphere' (kegy207)_

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The ozone layer is contained in the:

  1. Troposphere
  2. Stratosphere
  3. Thermosphere
  4. Exosphere
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Correct answer: B. Stratosphere

1. The stratosphere sits above the tropopause. 2. One important thing about it is that it contains the ozone layer. 3. Ozone screens harmful rays from the sun. _Source: syllabus Geography, 'Composition and Structure of Atmosphere' (kegy207)_

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All changes in climate and weather take place in the:

  1. Ionosphere
  2. Mesosphere
  3. Troposphere
  4. Stratosphere
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Correct answer: C. Troposphere

1. Weather needs dust particles and water vapour. 2. The troposphere contains both. 3. So all changes in climate and weather happen in this layer. _Source: syllabus Geography, 'Composition and Structure of Atmosphere' (kegy207)_

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