Glossary

Category: Environmental Science (Select letter)

Looking in Category Environmental Science for letter G

Geomorphology
The study of the arrangement and form of the Earth's crust and of the relationship between these physical features and the geologic structures beneath.
http://www.geographic.org

Glacial Till
The mass of rocks and finely ground material carried by a glacier, then deposited when the ice melted. Creates an unstratified material of varying composition.
http://www.geographic.org

Glaciation
Having been covered with a glacier or subject to glacial epochs.
http://www.geographic.org

globe
A true-to-scale map of the Earth that duplicates its round shape and correctly represents areas, relative size and shape of physical features, distances, and directions.
http://www.geographic.org

Great Circle Route
The shortest distance between two places on the Earth's surface. The route follows a line described by the intersection of the surface with an imaginary plane passing through the Earth's center.
http://www.geographic.org

Grid
A pattern of lines on a chart or map, such as those representing latitude and longitude, which helps determine absolute location.
http://www.geographic.org

groundwater
water sources found below the surface of the earth often in naturally occurring reservoirs in permeable rock strata; the source for wells and natural springs.
CIA World Factbook 2000