| Absolute Location | The exact position of a place on Earth's surface expressed as latitude and longitude coordinates, such as 40°N, 74°W. |
| relative distance | The perceived or functional distance between two places based on time, cost, or cultural connection rather than physical measurement. |
| map projections | Methods of representing the 3D Earth on a flat map surface that inevitably distort shape, area, distance, or direction. |
| Choropleth Map | A thematic map that uses shaded colors or patterns to represent statistical data across geographic areas, such as population density by country. |
| Remote Sensing | Collecting geographic data about Earth's surface from a distance, typically via satellites or aircraft, without direct physical contact. |
| Census Data | Systematic population information collected by governments at regular intervals, used to make decisions about resource allocation, political boundaries, and demographic analysis. |
| Distance Decay | The principle that interaction between two places decreases as the distance between them increases. |
| Time-Space Compression | The reduction in perceived distance between places caused by advances in transportation and communication technology, making the world feel smaller. |
| Environmental Determinism | The theory that the physical environment, especially climate and landforms, controls how human societies develop and behave. |
| Scale of Analysis | The geographic level (local, national, regional, global) at which data is examined; changing scale changes what patterns are visible and how they are interpreted. |
| Formal Region | An area defined by a uniform, measurable characteristic shared throughout, such as a country, climate zone, or language area. |
| Functional Region | An area organized around a central node or hub, defined by the connections between the center and surrounding areas, such as a metropolitan commuter zone. |
| Perceptual Region | An area defined by people's shared feelings, cultural identity, or sense of place rather than official boundaries, such as 'the South' in the United States. |
| field observations | A method of geographic data collection in which researchers directly observe and record spatial information and phenomena at a location. |