The seven units, and what each one is for
Every unit has a page with what it covers and what to photograph from your own notes: Unit 1 on thinking geographically and the tools of the discipline, Unit 2 on population and migration, Unit 3 on cultural patterns and processes, Unit 4 on political patterns, Unit 5 on agriculture and rural land use, Unit 6 on cities and urban land use, and Unit 7 on industrial and economic development. Read them for coverage, not for term practice.
Diffusion is three terms and one contrast
More questions turn on diffusion than on any other single idea in this course, and they almost always ask you to choose between types rather than to define one. Hierarchical diffusion moves down a ranked order and skips nearer places that sit lower in it. Contagious diffusion reaches whatever is adjacent and skips nothing, so its map widens continuously. Relocation diffusion travels inside people who move and can leave the origin behind entirely. One question separates all three: was anything nearer passed over.
Boundaries, and why the consequence is the answer
Political questions lean on boundary classification, and the four types are antecedent, subsequent, superimposed and relict. The superimposed case carries the most questions because its consequence is predictable: a line drawn by an outside power across an existing cultural landscape divides groups, and division produces irredentism and separatism. Questions here usually describe a situation and ask which type produced it.
Distance, which is under half the course
Spatial interaction questions run on friction of distance, the cost that separation imposes, and on the distance decay that cost produces. Land use rings, market areas and migration fields are all answers to the same question about what separation costs, which is why learning the term once pays across three different units rather than one.
How to revise terms rather than units
A unit page is the wrong shape for a term question, because the question identifies a described case rather than summarising a topic. Photograph the comparison tables, the diffusion diagrams and the boundary classification, then turn them into questions that ask you to choose between types. WeSolve+ builds that from a photographed page and returns the ones you miss later under spaced repetition rather than leaving them read once.
What this page does not do
It does not leak exam questions, sell past papers or promise a score. The College Board publishes the course and exam description and that document is the authority on what is examined; this page is a directory of our own material against it. A student meeting the subject for the first time should start with the course itself, and these pages work on material you already hold.
Sources used on this page
- College Board, AP Human Geography
- Trans-cultural diffusion
- Language family
- Cultural landscape
- Lingua franca
- Active recall
- Spaced repetition
- Testing effect
- Forgetting curve
- Generation effect
- Judgment of learning
- Metacognition
- Desirable difficulty
- Distributed practice
- Formative assessment
- Flashcard
- Cloze test
- Multiple choice
- Test (assessment)
- Educational assessment
- Advanced Placement
- Curriculum
- Study skills
- Study guide
- Note-taking
- Overlearning
- Instructional scaffolding
- Item analysis
- Mastery learning
- Hierarchical diffusion
- Urban hierarchy
- Irredentism
- Distance decay
How many units are in AP Human Geography?
Seven, running from thinking geographically through to industrial and economic development. Each one has its own page here with what it covers and what is worth photographing from your notes.
Which terms carry the most exam questions?
The diffusion types, the boundary classification and friction of distance. Each of those has a concept page here, because the exam asks you to identify described cases rather than recite definitions.
Is it better to revise by unit or by term?
By term for the multiple choice, because questions describe a case and ask which term fits. The unit pages are for coverage and the concept pages are for the questions themselves.
How do I tell the diffusion types apart?
Ask whether anything nearer was skipped. Contagious diffusion skips nothing, hierarchical diffusion skips lower ranked places, and relocation diffusion appears somewhere new with untouched ground in between.
What does WeSolve+ do with my notes?
It turns a photographed page into explained questions and cards drawn from that page, then returns the ones you miss on a schedule. It works from your own material rather than from a ready made question bank.
Are these pages a substitute for the course?
No. The College Board course and exam description is the authority on what is examined, and a student meeting the subject for the first time should start with the course, a textbook or a teacher.
Last updated: 2026-09-23 · Written with AI assistance and reviewed before publishing.