Geology

Geology

The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.

Industry: Earth science

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Geology

Glass (volcanic)

Earth science; Geology

Natural glass (obsidian) that forms when molten lava cools too rapidly to permit crystal growth.

Fumarole

Earth science; Geology

An opening at the Earth's surface that emits water vapor, hydrogen sulfide, and other gases, often at high temperature.

Geothermal energy

Earth science; Geology

Power generation using natural steam derived from the Earth's internal heat.

Glacier

Earth science; Geology

A mass of ice, formed by the recrystallization of snow, that flows forward, or has flowed at some time in the past.

An area in which surface water cannot reach the ocean. Any water that falls into an area with internal drainage as rain or snow does not escape out of it; not one of the streams that originate within ...

Isotope

Earth science; Geology

Atoms that differ in atomic mass number , but not in atomic number , are called isotopes. For example, oxygen (atomic number 8) may have an atomic mass number of 16, 17, or 18, depending on whether ...