Glossary of geography terms

This is a list of geographical terms that are listed in alphabetical order.
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Absolute humidity: The mass of water vapor in the atmosphere per unit of volume of space. (IIP 2008)
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. (OERI 1996)
Accessibility resource: A naturally occurring landscape feature that facilitates interaction between places. (IIP 2008)
Accessibility: A locational characteristic that permits a place to be reached by the efforts of those at other places. (IIP 2008)
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. (IIP 2008)
Active volcano: A volcano that is currently erupting, or has erupted
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