World Geography – IBPS Clerk Study Notes
(General Awareness & Current Affairs)
1. Why World Geography?
- Exam relevance:
- Clears “General Knowledge” section on world facts, maps, and trends.
- Helps in solving problems on population statistics, trade routes, climate‑related questions.
- Competitive edge:
- Many questions gauge knowledge of world geography as a proxy for analytical thinking and world‑view.
2. Core Concepts & Terminology
| Term | Definition | Key Points |
|---|---|---|
| Continents | Seven largest continuous landmasses. | Africa, Antarctica, Asia, Europe, North America, Australia (Oceania), South America. |
| Oceans | Five major saltwater bodies. | Pacific, Atlantic, Indian, Southern, Arctic. |
| Latitude / Longitude | Angular coordinates measuring position east‑west / north‑south. | 0° = Equator, 90°N/S = Poles; 0° = Prime Meridian (London). |
| Geodesic | Shortest path on a sphere (great‑circle). | Haversine formula is used to compute distances. |
| Tectonic Plates | Massive slabs of lithosphere. | 12 major plates + several minor ones. |
| Biogeographic Regions | Distinct ecological zones. | Tropics, Temperate, Polar. |
3. World Map Basics
| Feature | Notes |
|---|---|
| Map Projections | • Mercator (good for navigation, distorts area). • Gall‑Peters (equal area). • Robinson (balanced). |
| Axis & Scale | 1 cm on map may represent 100 km (depends on scale). |
| Latitude/Longitude Grid | Useful for quick lookup of coordinates, distances, time zones. |
4. Major Geographical Features
| Feature | Key Facts |
|---|---|
| Highest Mountain | Mount Everest (8 848 m) – Nepal/Tibet. |
| Largest Desert | Sahara (≈9.2 M km²) – Africa. |
| Largest Ocean | Pacific (≈165 M km²). |
| Largest River (length) | Nile (≈6 650 km) – Africa. |
| Largest River (volume) | Amazon (≈6 400 km, discharge ≈209 000 m³/s). |
| Largest Lake (by area) | Caspian Sea (≈371 000 km²) – landlocked. |
| Largest Island | Greenland (≈2.166 M km²). |
| Largest Landlocked Country | Kazakhstan (≈2.724 M km²). |
| Smallest Country | Vatican City (≈0.44 km²). |
| Most Populous Country | China (≈1.4 billion). |
| Least Populous Country | Monaco (≈39 k). |
5. Climate & Weather Zones
| Zone | Latitude Range | Climate Characteristics | Examples |
|---|---|---|---|
| Tropical | 0°–23.5° | High rainfall, high temps, monsoon seasons. | Amazon, Southeast Asia. |
| Subtropical | 23.5°–35° | Hot summers, mild winters. | Southern USA, Southern Europe. |
| Temperate | 35°–60° | Four distinct seasons. | Canada, UK. |
| Polar | >60° | Cold, ice caps, short summers. | Greenland, Antarctica. |
6. Tectonic Plates & Earthquakes
| Plate | Countries (major) | Notable Features |
|---|---|---|
| Pacific Plate | Japan, Indonesia, Chile | Ring of Fire, frequent tsunamis. |
| Eurasian Plate | Russia, China, Europe | Alpine orogeny, Himalayas. |
| African Plate | Egypt, Kenya, South Africa | Rift Valley, Afar Depression. |
| North American Plate | USA, Canada, Mexico | San Andreas Fault, Gulf of Mexico. |
| South American Plate | Brazil, Argentina, Peru | Andes, Atacama Desert. |
7. Economic & Demographic Highlights
| Category | Global Ranking | Key Notes |
|---|---|---|
| GDP (Nominal) | 1️⃣ China, 2️⃣ USA, 3️⃣ India | Growth rates vary; emerging economies. |
| Population Density | 1️⃣ Bangladesh (≈1 265 people/km²) | Highest; major challenge. |
| Urbanisation Rate | 1️⃣ Bangladesh, 2️⃣ India | Rapid urban growth, slum expansion. |
| Literacy Rate | 1️⃣ South Korea (≈99%) | Correlation with GDP, technology. |