Geography
Two Main Branches
- Physical Geography — landforms, climate, water systems, ecosystems, and the processes that shape Earth's surface
- Human Geography — how people interact with and organize space: cities, economies, cultures, borders
Key Concepts
- Latitude & Longitude — the grid system that pinpoints any location on Earth
- Plate Tectonics — Earth's crust is divided into plates that move, causing earthquakes, volcanoes, and mountain formation
- Climate Zones — tropical, arid, temperate, continental, polar — driven by latitude, altitude, and ocean currents
- Biomes — large ecological communities (desert, tundra, rainforest, grassland, etc.)
- Demographics — population density, migration patterns, urbanization
Maps & Spatial Thinking
Maps are geography's primary tool. Every map involves choices — what to include, what to leave out, how to project a 3D sphere onto 2D. These choices shape how we see the world. The Mercator projection, for example, makes Europe look larger than it is relative to Africa.
Why It Matters
Geography connects the physical world to human decisions. Climate change, urban planning, trade routes, migration crises, and resource management all require geographic thinking.