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Geographical terms are words or phrases which describes and identify natural phenomenons, geographical locations, spatial dimension and natural resources. Geographical terms are classified according to their functions, such as description, explanation, analysing, evaluating and integrating. This is a list of geographical terms that are listed in alphabetical order. ==A== * Absolute humidity: The mass of water vapor in the atmosphere per unit of volume of space. * Absolute location: The location of a point on the Earth's surface that can be expressed by a grid reference such as latitude and longitude. * Accessibility resource: A naturally occurring landscape feature that facilitates interaction between places. * Accessibility: A locational characteristic that permits a place to be reached by the efforts of those at other places. * Acid rain: Rain that has become more acidic than normal (a pH below 5.0) as certain oxides present as airborne pollutants are absorbed by the water droplets. The term is often applied generically to all acidic precipitation. * Active volcano: A volcano that is currently erupting, or has erupted during recorded history. * Aerosol: Fine liquid or solid particles suspended in the atmosphere. Aerosols resulting from volcanic eruptions are tiny droplets of sulfuric acid—sulfur dioxide that has picked up oxygen and water. * Air mass: A very large body of atmosphere defined by essentially similar horizontal air temperatures. Moisture conditions are also usually similar throughout the mass. * Alluvia: Clay, silt, gravel, or similar detrital material deposited by running water. * Alluvial soils: Soils deposited through the action of moving water. These soils lack horizons and are usually highly fertile. * Altitude: Height of an object in the atmosphere above sea level. * Anthracite: A hard coal containing little volatile matter. * Archipelago: A collection of islands in a sea. * Arête: A sharp, narrow mountain ridge. It often results from the erosive activity of alpine glaciers flowing in adjacent valleys. * Arroyo: A deep gully cut by a stream that flows only part of the year; a dry gulch. A term normally used only in desert areas. * Ash: Fragments less than (about 1/8 inch) in diameter of lava or rock blasted into the air by volcanic explosions. * Atlantic Seaboard fall line: The physiographic border between the Piedmont and Atlantic coastal plain regions. The name derives from the river rapids and falls that occur as the water flows from the hard rocks of the higher piedmont onto the softer rocks of the coastal plain. * Atlas: A bound collection of maps. * Atmosphere: The mixture of gases, aerosols, solid particles, and water vapor that envelops the Earth. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Glossary of geography terms」の詳細全文を読む スポンサード リンク
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