🌍 GEOGRAPHY: AN INTRODUCTION World Geography · Ch 01

SSC / Railway / UPSC / BPSC — World Geography Mind Map Series

📖 Geography — Meaning & Origin
  • Geography = Geo (Earth) + Graphia (Description) → "Description of the Earth"
  • First use of the term 'Geography' by Eratosthenes (Greek Scholar)
276–194
BCE — Eratosthenes' Lifetime
⚡ Quick Recall
Eratosthenes coined Geography and advanced mathematical geography, including measurement of Earth’s circumference.
⚠ Exam Trap
Hecataeus: Periodos Ges and early descriptive geography; Eratosthenes: coined Geography and mathematical geography. Use documented contributions rather than disputed father titles.
🌐 Branches of Geography

1. Physical Geography

Foundational figure of modern physical/systematic geography: Alexander von Humboldt

Study of landforms, soil, climate, etc.

  • Climatology
  • Geomorphology
  • Pedology
  • Hydrology
  • Biogeography

2. Human Geography

Founder: Friedrich Ratzel (Book: Anthropogeography)

Study of culture, cities, population, etc.

  • Economic Geography
  • Political Geography
  • Population Geography
  • Behavioural Geography
  • Historical Geography
  • Cultural Geography
⚠ Exam Trap
Modern physical/systematic geography: Humboldt; systematic human geography: Ratzel (Anthropogeographie).
🧭 Philosophies of Geography

1. Determinism

Human is subordinate to nature

Proponents:
  • Ratzel
  • Huntington
  • Ellen Semple
  • Carl Ritter: regional approach and co-founder of modern geography

2. Possibilism

Human capabilities take precedence over nature

Proponents:
  • Paul Vidal de la Blache
  • Lucien Febvre

3. Neo-Determinism

Equal importance to both human and nature

Originator:
  • Griffith Taylor
⚡ Quick Recall
Determinism → Nature dominates · Possibilism → Human dominates · Neo-Determinism → Stop & Go (Balance of both)
👤 Prominent Geographers / Founders
TitleName
Early descriptive geography / Periodos GesHecataeus
Coined Geography / mathematical geographyEratosthenes
Co-founder of modern geography / systematic approachAlexander von Humboldt
Cultural-landscape tradition / Berkeley SchoolCarl O. Sauer
Founders of Mathematical GeographyThales and Anaximander (mathematical tradition; Anaximander: early Greek world map)
⚠ Exam Trap
Humboldt: modern/systematic geography; Hecataeus: early descriptive geography and Periodos Ges.
📚 Prominent Books and Authors
BookAuthor
A Brief History of TimeStephen Hawking
The Theory of EverythingStephen Hawking
The World As I See ItAlbert Einstein
The Mathematical Theory of Black HolesSubrahmanyan Chandrasekhar
⚡ Quick Recall
Stephen Hawking authored two books in this list — "A Brief History of Time" & "The Theory of Everything".
📏 Important Lines — Connecting Places of Equal...
LineConnects Places of Equal...
Contour LineElevation
IsobarAir Pressure
IsohyetsRainfall
IsothermTemperature
IsonephCloud Cover
IsoseismalEarthquake Intensity
IsohalineSalinity
IsochroneTravel Time from a Point
📌 Hachure Line Disconnected short lines showing slope in maps
📌 Railway & Telephone lines on maps Represented in Black colour
⚠ Exam Trap
Isohyet (Rainfall) vs Isohaline (Salinity) vs Isoneph (Cloud Cover) — sound similar, frequently confused in objective questions.
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