World Geography – Study Notes for Goa TET
(General Awareness & Current Affairs)
1. Simple Explanation
World geography is the study of the Earth’s physical features, human settlements, climate, resources, and the inter‑relationships among them. It helps you understand where things are, why they are there, and how they affect people and the planet.
Key categories:
| Category | What it covers | Why it matters |
|---|---|---|
| Continents | Landmasses (Asia, Africa, etc.) | Frames global political & cultural divisions |
| Oceans & Seas | Bodies of salt water | Influence climate, trade, biodiversity |
| Major Countries & Capitals | Sovereign states & their seats | Political, economic, and diplomatic hubs |
| Physical Features | Mountains, rivers, deserts | Resource distribution & natural hazards |
| Economic Geography | Industrial, agricultural, service zones | Determines global trade patterns |
| Demographic & Cultural Geography | Population density, language clusters | Social dynamics & policy planning |
2. Key Points
2.1 Continents (by area)
| Rank | Continent | Area (km²) | Population (approx.) | Major Features |
|---|---|---|---|---|
| 1 | Asia | 44.58M | 4.7B | Himalayas, Gobi, Yangtze, Yangtze |
| 2 | Africa | 30.37M | 1.3B | Sahara, Nile, Congo |
| 3 | North America | 24.71M | 592M | Rockies, Mississippi |
| 4 | South America | 17.84M | 430M | Andes, Amazon |
| 5 | Antarctica | 14.2M | < 1,000 (researchers) | Ice sheets |
| 6 | Europe | 10.18M | 747M | Alps, Danube |
| 7 | Australia (including Oceania) | 8.56M | 42M | Great Barrier Reef, Outback |
2.2 Oceans & Major Seas
| Ocean | Area (km²) | Notable Sea |
|---|---|---|
| Pacific | 165M | Philippine Sea, Bering Sea |
| Atlantic | 106M | Caribbean Sea, Mediterranean |
| Indian | 73.56M | Arabian Sea, Bay of Bengal |
| Southern | 21.5M | Weddell Sea, Ross Sea |
| Arctic | 14.05M | Greenland Sea, Barents Sea |
2.3 Major Countries (by area & population)
| Rank | Country | Area (km²) | Population (2024 est.) | Capital |
|---|---|---|---|---|
| 1 | Russia | 17.1M | 144M | Moscow |
| 2 | Canada | 9.98M | 38M | Ottawa |
| 3 | China | 9.6M | 1.41B | Beijing |
| 4 | United States | 9.52M | 333M | Washington, D.C. |
| 5 | Brazil | 8.51M | 213M | Brasília |
| 6 | Australia | 7.69M | 42M | Canberra |
| 7 | India | 3.29M | 1.43B | New Delhi |
| 8 | Argentina | 2.78M | 45M | Buenos Aires |
| 9 | Kazakhstan | 2.72M | 19M | Nur‑Sultan |
| 10 | Algeria | 2.38M | 43M | Algiers |
2.4 Physical Landmarks
- Mountains: Himalayas (India/China/Tibet), Andes (South America), Rockies (North America), Alps (Europe).
- Rivers: Nile (Africa), Amazon (South America), Yangtze (Asia), Mississippi (North America).
- Deserts: Sahara (Africa), Arabian (Middle East), Gobi (Asia).
- Islands: Indonesia (many islands), Japan, Philippines, Great Britain, Scandinavia.
2.5 Economic & Demographic Highlights
| Region | GDP Rank (2023) | Population Density | Key Industries |
|---|---|---|---|
| East Asia | 1 | 138 ppl/km² | Tech, manufacturing |
| Middle East | 5 | 50 ppl/km² | Oil & gas |
| Sub‑Saharan Africa | 9 | 46 ppl/km² | Agriculture, mining |
| Western Europe | 3 | 119 ppl/km² | Services, automotive |
| South Asia | 4 | 455 ppl/km² | IT, textiles |
2.6 Current Affairs (2024)
| Date | Event | Significance |
|---|---|---|
| June 2024 | UN Climate Change Conference (COP30) in Glasgow | New commitments on carbon neutrality by 2050 |
| March 2024 | Bhutan becomes the first country to achieve net‑zero carbon emissions | Sets a benchmark for sustainable development |
| January 2024 | Eritrea’s new constitution adopted | First constitution since independence (1993) |
| April 2024 | World Bank releases “Global Development Report 2024” | Highlights the “resource curse” in Africa |
| May 2024 | New Zealand declares “Zero‑Carbon by 2050” | Policy roadmap for renewable energy |
| August 2024 | India and USA launch joint deep‑space probe to Mars | Strengthening Indo‑US scientific collaboration |
3. Worked Example
Question: Which country has the highest population density among the top 10 most populous countries? Calculate the density (people per km²) and identify the country.
| Country | Population (2024) | Area (km²) | Density (people/km²) |
|---|---|---|---|
| China | 1,410,000,000 | 9,600,000 | ** |