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Revision Notes
Geographical Information and Map Making — Revision Notes
Gujarat Board · Class 11 · Geography
Geographical Information and Map Making revision notes for Gujarat Board Class 11 Geography: 4 topics in quick points.
43 questions24 flashcards5 concepts
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Key Topics to Revise
1
Parallels of Latitudes and Meridians of Longitudes
- Parallels of latitude are imaginary circles formed by Earth's daily rotation, parallel to the equator
- Equator (0°) is the largest latitude dividing Earth into Northern and Southern hemispheres
- Important latitudes: Tropic of Cancer (23.5°N), Tropic of Capricorn (23.5°S), Arctic Circle (66.5°N), Antarctic Circle (66.5°S)
2
Time Concepts and Calculations
- Earth rotates 360° in 24 hours = 15° per hour = 1° in 4 minutes
- Local time is when sun is directly overhead (12:00 noon) for places on same longitude
- Standard time is common time adopted by a country from its central meridian
3
Direction Finding Methods
- Four main directions: North, South, East, West, with East being sunrise direction
- Direction is relative - always expressed in relation to another point
- Maps must show north direction using arrows or latitude-longitude grid
4
Modern Cartographic Techniques
- Information technology has revolutionized map making with satellites and computers
- GPS uses 24 satellites with 12-hour orbits for precise location determination
- GIS combines databases with spatial analysis capabilities
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Full NotesKey Concepts
Imaginary circles formed by places completingImaginary halfEarth rotates 360° in 24 hoursFour main methodsRadio navigation system using 24 satellites
Frequently Asked Questions
What are the important topics in Geographical Information and Map Making for Gujarat Board Class 11 Geography?
Key topics in Geographical Information and Map Making include Parallels of Latitudes and Meridians of Longitudes, Time Concepts and Calculations, Direction Finding Methods, Modern Cartographic Techniques. Study these first, then practise questions on each for Class 11 exams.
How should I revise Geographical Information and Map Making for Class 11 exams?
Learn the core ideas first, then work through the 43 practice questions on Geographical Information and Map Making. Revise 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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