intro to aphug

Absolute Distance

The exact physical distance between two points on Earth.

Administrative/Formal Regions

Areas defined by political boundaries that create concrete borders with no debate as to their location.

Barriers to Diffusion

Factors that slow or prevent the spread of ideas, innovations, or cultural practices.

Cartographic Scale

The ratio between the size of an area on a map and its actual size on Earth.

Cognitive/Perceptual/Vernacular Regions

Areas defined by subjective perceptions or common understanding, creating fuzzy, debatable borders.

Connectivity

The degree to which places are linked to each other.

Diffusion

The process by which a characteristic spreads across space and through a population over time.

Distortion

Inaccuracies in map representation caused by projecting a spherical surface onto a flat surface.

Earth's Graticule

The network of latitude and longitude lines on Earth or a map.

First Law of Geography

Tobler's law stating that everything is related to everything else, but near things are more related than distant things.

Fuller Projection

A map projection that represents Earth as an unfolded icosahedron to minimize distortion.

Geographical Information Systems (GIS)

Computer systems used for storing, managing, analyzing, and displaying geographic data.

Hierarchical Diffusion

The spread of an idea or innovation from persons or nodes of authority to common people or rural places.

Isoline Maps

Maps displaying continuous lines that connect points of equal value for a measured quantity.

Mercator Projection

A cylindrical map projection that preserves shape but distorts size, especially near the poles.

Physical Geography

The study of natural features and physical processes of the Earth's surface.

Projection

A systematic method of representing Earth's curved surface on a flat map.

Region

An area characterized by similar physical, cultural, or administrative features.

Relative Location

The position of a place described in relation to other places or features.

Robinson Projection

A map projection that balances area, shape, and distance distortions for a visually appealing world map.

Site

The physical characteristics of a place, such as climate or topography.

Situation

The location of a place relative to surrounding features and its connections to other areas.

Stimulus Expansion Diffusion

The spread of an underlying idea or principle even though the specific details change as it spreads.

Time-Distance Decay

The decrease in interaction between places as the time or distance between them increases.

Environmental Determinism

The theory that the physical environment shapes human culture and societal development.

Environmental Possibilism

The view that the physical environment provides opportunities and constraints, but human innovation is the decisive factor in cultural development.

Large Scale Map

A map showing a small geographic area in great detail, with a large representative fraction.

Small Scale Map

A map showing a large geographic area with less detail, with a small representative fraction.

Absolute Location

The exact position of a place on Earth, typically given in latitude and longitude coordinates or an address.

Aggregation

The process of combining smaller spatial units into larger ones for data analysis or representation.

Cartograms

Thematic maps that distort geographic area based on a statistical variable rather than actual land size.

Choropleth Maps

Thematic maps using color or shading to represent data values in defined geographic areas.

Concentration

The degree to which a phenomenon or feature is clustered in a particular area.

Contagious Expansion Diffusion

The rapid, widespread spread of a trait or characteristic through direct contact between individuals.

Distance Decay

The decrease in interaction between two locations as distance increases.

Distribution

The spatial arrangement of phenomena across Earth's surface.

Functional Regions

Areas organized around a central focal node, defined by interactions or connections.

Global Positioning Systems (GPS)

Satellite-based navigation systems that provide exact location information.

Human Geography

The study of human activities, cultures, and their spatial distribution on Earth.

Latitude and Longitude

Coordinate systems used to specify exact locations on Earth's surface.

Perceptual Regions of the US

Informal spatial groupings based on subjective perceptions of areas within the United States.

Preference Map of the US

A map showing subjective preferences or opinions about different areas within the United States.

Proportional Symbols Maps

Thematic maps using symbols of varying sizes to represent quantitative data values.

Remote Sensing

The collection of data about an area from a distance, typically using satellites or aircraft.

Scale of Analysis

The level of spatial focus used when examining phenomena to make inferences.

Time-Space Convergence

The reduction in time and cost required to move between places due to improved transportation and communication.

Friction of Distance

The hindrance or resistance to movement and interaction caused by distance.

Accessibility

The ease with which a location can be reached from other locations.

Azimuthal Projections

Map projections centered on a specific point, often used for polar regions.

Cartography

The science and art of making maps.

Cognitive Maps

Mental representations of spatial knowledge and physical space.

Conformal Projection

A map projection that preserves local shapes but may distort area.

Density

The number of units of a phenomenon per unit area.

Dot Density Maps

Thematic maps using dots to represent the presence or quantity of a feature or phenomenon.

Equal Area Projection

A map projection that accurately represents the relative sizes of areas on Earth's surface.

Intermediate Direction

Directions located between the cardinal directions (NE, SE, SW, NW).

Generalization

The process of simplifying geographic features for representation at a smaller scale.

Gravity Model

A model predicting spatial interaction between places based on their population size and distance.

Pattern

The arrangement and distribution of geographic phenomena across space.

Peters Projection

An equal-area map projection that preserves relative land area but distorts shape.

Preference Maps

Maps displaying subjective preferences or opinions about different places.

Reference Maps

Maps designed to show the physical boundaries and locations of a variety of features in an area.

Relative (Cognitive) Distance

The perceived distance between places, which may differ from actual physical distance.

Resolution

The level of detail visible in a map or geographic image.

Spatial Perspective

A way of viewing the world that emphasizes the importance of geographic space and spatial relationships.

Thematic Maps

Maps designed to illustrate a particular topic or theme connected with a specific geographic area.