Geography: Physical Systems, Population, Migration, and Environment
Geography questions test physical systems, population and migration, and human–environment interaction. They almost always arrive attached to a map, graph, chart, or population pyramid. The scored skill is interpreting the graphic and connecting it to a geographic concept, not reading numbers aloud.
Core content
- Physical systems: plate boundaries explain the distribution of earthquakes and volcanoes. Convergent boundaries produce subduction and volcanic arcs; divergent boundaries produce rifts and seafloor spreading; transform boundaries produce strike-slip faults. Climate zones and biomes reflect latitude, altitude, and ocean currents.
- Population: population pyramids show age and sex structure. A broad base indicates high birth rates and rapid growth; a narrow base with a heavy top indicates an aging population. The demographic transition model links falling death rates and later falling birth rates to economic development.
- Migration: push factors include conflict, drought, and unemployment; pull factors include jobs, safety, and services. Distinguish voluntary from forced migration, and internal from international movement.
- Human–environment interaction: desertification, deforestation, large dams such as Aswan and Three Gorges, the Green Revolution, and climate change adaptation.
Worked example
A pyramid shows a wide base and steep sides for a country in 2020, and the question asks for one likely consequence. Reasoning: a wide base means a large cohort of children, so demand for schools rises now and demand for jobs rises later. If the economy cannot absorb those workers, emigration or unemployment may follow. Name the mechanism instead of writing only that the population is growing.
Traps
Treating weather as climate; assuming all migrants are refugees; describing a graph without interpreting it; ignoring scale, since a local water shortage and a global one call for different answers.