Geography Glossary

The precise position of a place on the Earth's surface expressed using a coordinate system such as latitude and longitude.

A chain or cluster of islands, often formed by volcanic activity or tectonic processes, such as the Philippines, Indonesia, or Hawaii.

The variety and variability of life forms within an ecosystem, region, or across the entire planet, encompassing genetic diversity, species diversity, and ecosystem diversity.

The maximum number of individuals of a species that an environment can sustainably support given the available resources such as food, water, and space.

A thematic map that uses shading or color gradients to represent the intensity of a variable (such as population density or income) within predefined geographic areas.

The hypothesis, proposed by Alfred Wegener, that continents have moved across the Earth's surface over geological time, later confirmed and expanded by the theory of plate tectonics.

A line on a topographic map connecting points of equal elevation, used to represent the three-dimensional shape of terrain on a two-dimensional surface.

The large-scale removal of forest cover, typically for agriculture, logging, or urban expansion, leading to habitat loss, soil erosion, and increased atmospheric carbon dioxide.

A community of living organisms interacting with one another and with their physical environment as an integrated system, exchanging energy and cycling nutrients.

The study of the origin and evolution of landforms, including the processes of weathering, erosion, deposition, and tectonic activity that shape the Earth's surface.

A line on a map connecting points of equal value, such as temperature (isotherm), pressure (isobar), or elevation (contour line).

The angular distance of a point north or south of the equator, measured in degrees from 0 at the equator to 90 at the poles.

The angular distance of a point east or west of the Prime Meridian, measured in degrees from 0 to 180.

A mathematical method for representing the curved surface of the Earth on a flat plane, inevitably involving some distortion of area, shape, distance, or direction.

The movement of people from one place to another, whether within a country (internal) or across national borders (international), driven by push and pull factors.

A seasonal reversal of wind direction that brings marked wet and dry seasons, most prominent in South and Southeast Asia, driven by differential heating of land and ocean.

Ground that remains at or below 0 degrees Celsius for at least two consecutive years, found primarily in polar and high-altitude regions. Its thawing due to climate change releases stored carbon and methane.

The position of a place described in relation to other places, landmarks, or environmental features rather than by exact coordinates.

The ratio between the distance on a map and the corresponding distance on the ground, or more broadly the level of detail at which geographic phenomena are observed and analyzed.

The process at a convergent plate boundary where one tectonic plate descends beneath another into the mantle, often producing deep ocean trenches, earthquakes, and volcanic arcs.

Development that meets the needs of the present without compromising the ability of future generations to meet their own needs, balancing economic growth, environmental protection, and social equity.

A large slab of solid rock consisting of both continental and oceanic lithosphere that moves over the asthenosphere as part of the plate tectonic system.

The arrangement of the natural and artificial physical features of an area, including its relief (elevation changes), slope, and surface features.

The uncontrolled expansion of urban areas into surrounding rural land, characterized by low-density development, automobile dependence, and separation of residential, commercial, and industrial zones.

The breakdown of rocks and minerals at or near the Earth's surface through physical, chemical, or biological processes without significant transportation of material.