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Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Geology

geothermal energy

Earth science; Geology

Heat extracted from the Earth for use as an power source.

geothermal gradient

Earth science; Geology

The rate at which temperature increases with depth below the surface.

glacier ice

Earth science; Geology

Ice with interlocking crystals that makes up the bulk of a glacier.

glass

Earth science; Geology

An inorganic solid in which there is no crystalline structure.

glassy

Earth science; Geology

A texture of extrusive igneous rocks that develops as the result of rapid cooling, so that crystallization is inhibited.

global warming

Earth science; Geology

The prediction that climate will warm as a result of the addition to the atmosphere of humanly produced greenhouse gases.

graded bedding

Earth science; Geology

Type of bedding sedimentary deposits in which individual beds become finer from bottom to top.