AP Human Geography introduces students to the systematic study of how humans organize space — from population distribution to urban land use patterns. The exam tests conceptual understanding, geographic models, and the ability to analyze data (maps, charts, photos) in context. Here's what you need to know by unit.
Unit 1: Thinking Geographically
The conceptual foundation: geographic scale (local, regional, global), spatial patterns (clustering, dispersal, linear), place (site vs. situation), region types (formal, functional, vernacular/perceptual), the nature of maps (projection distortion — Mercator exaggerates high latitudes), and GIS/GPS/remote sensing as data collection tools. The AP exam regularly tests the difference between site (absolute location characteristics) and situation (relative location relative to surrounding features).
Unit 2: Population and Migration
Population geography: population distribution (ecumene vs. nonecumene), arithmetic vs. physiological vs. agricultural density, demographic transition model (5 stages — know crude birth/death rates and population growth for each), Malthusian theory vs. neo-Malthusian vs. anti-Malthusian perspectives, and population pyramids (broad base = young population, narrow base = aging). Migration: push vs. pull factors, Ravenstein's Laws of Migration (most migrants move short distances, step migration), intervening obstacles, voluntary vs. forced migration, net migration rate, and refugee vs. economic migrant distinctions.
Unit 3: Cultural Patterns and Processes
Culture hearths (origins of diffusion), types of diffusion (relocation, expansion, contagious, hierarchical, stimulus), folk vs. popular culture and their different spatial distributions, language families and the spread of the Indo-European family, world religions and their hearths and diffusion patterns (Christianity, Islam, Hinduism, Buddhism — universalizing vs. ethnic), and cultural landscapes as artifacts of human identity. Key concepts: cultural convergence vs. divergence, acculturation, syncretism.
Unit 4: Political Organization of Space
State, nation, nation-state, and stateless nation distinctions. Boundary types (physical vs. cultural; antecedent, subsequent, superimposed, relict). Centripetal vs. centrifugal forces. Federalism vs. unitary systems. Geopolitics: heartland theory (Mackinder), rimland theory (Spykman), and offshore balancing. Supranationalism (EU, UN, NAFTA) and devolution (Catalonia, Quebec). Electoral geography: gerrymandering, reapportionment, the effect of district shape on representation.
Unit 5: Agriculture and Rural Land Use
Agricultural origins and hearths. Von Thünen's model (concentric rings of land use based on transportation cost from a central market — tested heavily). First, second, and third agricultural revolutions. Subsistence vs. commercial agriculture. Green Revolution: increased yields + increased chemical dependency + corporate consolidation. Commodity chains and their environmental/social effects. Sustainable agriculture alternatives (organic, fair trade, local food movements).
Unit 6: Cities and Urban Land Use
Urban land use models: Burgess concentric zone model, Hoyt sector model, Harris and Ullman multiple nuclei model, and the Latin American city model. Central place theory (Christaller): hexagonal market areas, range vs. threshold. World cities and global city hierarchy (alpha, beta, gamma). Suburbanization, edge cities, exurbs, and the urban-rural fringe. Gentrification, redlining, and urban renewal. Urban sustainability: smart growth, new urbanism, mixed-use development.
Unit 7: Industrial and Economic Development
Weber's least-cost theory (minimize transport + labor costs, agglomeration economies). Core-periphery model and Wallerstein's world-systems theory (core, semi-periphery, periphery). Rostow's stages of economic growth. Development indicators: GDP per capita, HDI, GII, GINI coefficient. Neoliberalism and structural adjustment. Special economic zones. The informal economy.
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