AP Human Geography Opponent Pairs Vocabulary

Vocabulary terms derived from the AP Human Geography lecture notes covering opponent pairs in Unit I through Unit VII.

State

Any of the political units forming a federal govt. or an independent political entity holding sovereignty over a territory; synonymous with "country".

Nation

A community of people with a common culture occupying a particular territory, bound together by a strong sense of unity arising from shared beliefs and customs.

Tobler’s First Law

A general rule stating that nearby things are more related than distant things.

Gravity Model

A mathematical model where interaction depends on population size and distance.

Time-Space Compression

A concept where technology makes distances feel smaller.

Distance Decay

The principle that interaction decreases as distance increases.

Formal Region

An area characterized by the same characteristic everywhere, such as language or climate.

Functional Region

A region organized around a central node, such as a city or business.

Site

The physical features of a location, including water, land, and climate.

Situation

The relative location of a place, such as its position near trade routes or cities.

Globalization

The spread of the same ideas and products everywhere.

Glocalization

The adaptation of global products or ideas to local culture.

Density

A measurement of the number of people per area.

Concentration

A measurement of how spread out people are in a given space.

Reference Map

A map showing general information such as roads and cities.

Thematic Map

A map focused on a single topic, such as population or climate.

Choropleth Map

A thematic map that uses color or shading to represent data.

Graduated Circle Map

A thematic map that uses the size of circles to represent data values.

Contagious Diffusion

The rapid, person-to-person spread of an idea or culture.

Stimulus Diffusion

The spread of an underlying idea that changes as it moves to new areas.

Hierarchical Diffusion

The spread of ideas through systems of power or authority, such as celebrities or major cities.

Relocation Diffusion

The spread of ideas or culture occurring when people physically move from one place to another.

Environmental Determinism

The theory that the physical environment controls human activity and culture.

Possibilism

The theory that humans can adapt to their environment and choose from different possibilities.

Place Utility

The value or satisfaction an individual derives from a specific place.

Placelessness

A lack of uniqueness in a landscape so that it looks the same as other places.

Scale

The size of the area being studied.

Scale of Analysis

The level of data aggregation used in a study, such as local, regional, or global.

Large Scale

A map scale showing a small area with more detail.

Small Scale

A map scale showing a large area with less detail.

Culture Region

An area where people share common cultural characteristics.

Cultural Landscape

The visible human impact on the environment resulting from cultural activities.

Domain

An area where a particular religion or culture exerts strong control.

Sphere

An area where a particular religion or culture has a weaker influence.

Primary Sector

Economic activity involving the extraction of raw materials.

Secondary Sector

Economic activity involving the manufacturing of goods.

Tertiary Sector

The service sector of the economy, including stores and healthcare.

Quaternary Sector

Knowledge-based economic activities, such as research and technology.

Informal Economy

Unregulated economic activity that is not taxed by the government.

Formal Economy

Legal economic activity that is regulated and taxed.

LDCs

Less Developed Countries characterized by low levels of development.

MDCs

More Developed Countries characterized by high levels of development.

Core

Wealthy and powerful countries in the world systems theory.

Semi-Periphery

Countries that are in between core and periphery in terms of wealth and power.

Periphery

Poor and dependent countries in the world systems theory.

GPS

Global Positioning System used to find exact locations.

GIS

Geographic Information System used to analyze and map geographic data.

Mercator Projection

A map projection with accurate direction but distorted size towards the poles.

Robinson Projection

A balanced map projection that attempts to minimize distortions across the entire map.

Arithmetic Density

$$\frac{\text{people}}{\text{total land}}$$

Physiological Density

$$\frac{\text{people}}{\text{arable land}}$$

Carrying Capacity

The maximum population that an environment can sustainably support.

Ecological Footprint

The measure of human impact on the environment.

Dependency Ratio

The ratio of dependents (those too young or old to work) to the working-age population.

Sex Ratio

The ratio of males to females in a population.

Ecumene

The portion of the Earth's surface that is inhabited by humans.

Nonecumene

The portion of the Earth's surface that is uninhabited.

Malthus

The theorist who argued that population growth will eventually outgrow food production.

Boserup

The theorist who argued that technology increases and food supply will adapt to population needs.

Ehrlich

A pessimistic theorist who predicted an overpopulation crisis.

Rosling

An optimistic theorist who argued that development improves global conditions.

J-Curve

A graph representing exponential population growth.

S-Curve

A graph representing logistic growth that eventually levels off.

Demographic Transition Model (DTM)

A model used to explain population growth patterns as countries develop.

Epidemiological Transition Model (ETM)

A model used to explain changing disease patterns in a population.

Stage 2 (DTM)

A stage characterized by high birth rates and falling death rates, leading to rapid growth.

Stage 3 (DTM)

A stage characterized by falling birth and death rates, leading to slowing growth.

Industrial Revolution

A period of rapid growth in jobs and urbanization.

Medical Revolution

A period characterized by a significant drop in mortality rates due to medical advances.

Doubling Time

The number of years required to double a population.

Natural Increase Rate (NIR)

$$\text{growth rate (\%)}$$

CBR

Crude Birth Rate; the number of births per year per every $1000$ people.

TFR

Total Fertility Rate; the average number of births per woman.

Zero Growth

A state where the population size remains stable.

Negative Growth

A state where the population size is shrinking.

Pro-natalist

Policies that encourage births and population growth.

Anti-natalist

Policies that discourage births to limit population growth.

Refugee

A person who is forced to leave their country and crosses an international border.

Internally Displaced Person (IDP)

A person forced to leave their home who stays within their own country.

Ravenstein

A theorist known for identifying laws and patterns of migration.

Lee’s Model

A migration model identifying push and pull factors as well as intervening obstacles.

Interregional Migration

Movement between different regions of a country.

Intraregional Migration

Movement within the same region of a country.

Push Factor

A negative condition that causes people to leave a location.

Pull Factor

A positive condition that attracts people to a new location.

Intervening Opportunity

A helpful factor that stops or changes a migration path.

Intervening Obstacle

A barrier that hinders or prevents migration.

Guest Worker

A temporary laborer invited to a country for work.

Migrant Worker

The general term for someone moving for work opportunities.

Step Migration

Migration that occurs in a series of stages.

Chain Migration

Migration to a specific location because relatives or members of the same nationality previously settled there.

Hutus

The majority ethnic group in Rwanda.

Tutsis

The minority ethnic group in Rwanda.

Stage 3 (Zelinsky)

Migration patterns characterized by rural to urban movement.

Stage 4 (Zelinsky)

Migration patterns characterized by urban to suburban movement.

Forced Migration

Movement where the person has no choice but to leave.

Voluntary Migration

Movement where the person chooses to move.

Brain Drain

The loss of highly skilled or educated workers to another place.

Brain Gain

The attraction of highly skilled or educated workers from other places.

Transhumance

The seasonal movement of livestock between mountains and lowland pastures.