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Geographical Information System (GIS)

ICSE · Class 12 · Geography

Complete topic list for Geographical Information System (GIS) in ICSE Class 12 Geography. Key concepts, sub-topics, and what to focus on for board exams.

70 questions42 flashcards5 concepts

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4 Topics · ICSE Class 12 Geography

Topics in Geographical Information System (GIS)

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1. Spatial Information Technology and GIS

  • Spatial information technology refers to the distribution of phenomena over geographical space.
  • It is derived from the term 'space' and focuses on how things are arranged on the Earth's surface.
  • Spatial information technology is an amalgamation of Remote Sensing, GPS, GIS, Digital Cartography, and Database Management Systems.
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2. Forms of Geographical Information

  • Geographical information is represented by two types of data: spatial data and non-spatial data.
  • Spatial data relate to geographical space and have positional, linear, or areal form.
  • Spatial data must have a definite geometrical shape to be stored in the internal database structure of GIS.
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3. Sources and Building Spatial Data in GIS

  • Spatial data can be built into GIS in several ways.
  • Important ways include acquiring digital data from a data supplier, digitising existing analogue data, and carrying out surveys of geographic entities.
  • The choice of geographical data source depends on the application area, available budget, and the type of data structure, whether vector or raster.
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4. Advantages of GIS over Manual Methods

  • Manual methods have three limitations: map information is processed and presented in a particular way, a map shows a single or predetermined theme, and a new map must be drawn when information is alte
  • GIS overcomes these limitations by allowing interrogation of displayed spatial features and retrieval of associated attribute information.
  • GIS allows maps to be drawn by querying or analysing attribute data.

Key Concepts

Central concept: Geographical Information System

Spatial Information TechnologyDefinitions of GISForms of Geographical InformationSpatial DataNon-spatial DataSources of Spatial DataChoice of Data SourceTopographical and Thematic Maps

Frequently Asked Questions

What are the important topics in Geographical Information System (GIS) for ICSE Class 12 Geography?
Geographical Information System (GIS) covers several key topics that are frequently asked in ICSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Geographical Information System (GIS) — ICSE Class 12 Geography?
Understand the core concepts first, then work through the 70 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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