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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 
ephemeral stream
Earth science; Geology
A stream drainage that is usually dry and fills with water only during brief episodes of rainfall. Many desert streams ephemeral.
epicenter
Earth science; Geology
The point on the Earth’s surface that is directly above the focus of an earthquake.
foliation
Earth science; Geology
A planar structure that develops in metamorphic rocks as a result of directed pressure.
formation
Earth science; Geology
A rock formation is a body of rock of considerable extent with distinctive characteristics that allow geologists to map, describe, and name it.
fossil fuel
Earth science; Geology
General term for any hydrocarbon used as fuel, including coal, oil, natural gas, and oil shale.
freeze-thaw cycle
Earth science; Geology
In colder temperate regions, water trapped in fractures and between grains of rocks repeatedly freezes, then thaws during the winter months. In some areas this occurs on a daily ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)