AP Human Geography studies how people, places, and environments are organized across Earth’s surface. This cheat sheet helps students review the major concepts, models, and vocabulary that appear throughout the course. It is useful for unit review, FRQ preparation, and quick comparison of geographic patterns at different scales.
Core ideas include spatial patterns, human-environment interaction, population change, cultural diffusion, political organization, economic development, and urban growth. Students should connect every concept to location, scale, region, and evidence. Strong AP answers explain not only what a pattern is, but why it happens and how it affects people or places.
Key Facts
- Scale means the level of analysis, such as local, regional, national, or global, and changing scale can change the pattern you see.
- The demographic transition model has five stages that describe changes in birth rates, death rates, and natural increase as a country develops.
- Population density can be measured as arithmetic density = total population divided by total land area.
- Physiological density = total population divided by arable land area, which helps show pressure on farmland.
- Migration is shaped by push factors that drive people away and pull factors that attract people to a destination.
- Cultural diffusion can occur by relocation diffusion, expansion diffusion, hierarchical diffusion, contagious diffusion, or stimulus diffusion.
- A state is a political unit with sovereignty over a defined territory, while a nation is a group of people with shared identity.
- Urban models such as the concentric zone model, sector model, and multiple nuclei model explain patterns of land use inside cities.
Vocabulary
- Spatial Pattern
- A spatial pattern is the arrangement of people, objects, or activities across space.
- Region
- A region is an area defined by one or more shared physical or human characteristics.
- Diffusion
- Diffusion is the spread of ideas, people, goods, or practices from one place to another.
- Sovereignty
- Sovereignty is the legal authority of a state to govern itself and control its territory.
- Urbanization
- Urbanization is the increase in the percentage of people living in cities and towns.
- Globalization
- Globalization is the growing connection among places through trade, migration, technology, culture, and communication.
Common Mistakes to Avoid
- Confusing nation and state is wrong because a nation is a cultural identity group, while a state is a sovereign political territory.
- Ignoring scale is wrong because a pattern visible at the global level may look different at the local or regional level.
- Listing a model without explaining it is wrong because AP Human Geography responses must connect the model to a real spatial pattern or process.
- Using correlation as proof of causation is wrong because two patterns can occur together without one directly causing the other.
- Writing FRQ answers without evidence is wrong because strong responses need specific examples, geographic terms, and clear cause-and-effect reasoning.
Practice Questions
- 1 A country has 60,000,000 people and 1,200,000 square kilometers of land. What is its arithmetic population density?
- 2 A country has 30,000,000 people and 300,000 square kilometers of arable land. What is its physiological density?
- 3 A city grows from 2,500,000 people to 3,000,000 people in 10 years. How many people were added, and what was the percent increase?
- 4 Explain how changing the scale of analysis from national to local could change the way a geographer understands migration patterns.