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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 
core area
Earth science; Geology
The portion of a country that contains its economic, political, intellectual, and cultural focus. It is often the center of creativity and change.
aphelion
Earth science; Geology
The point when the earth is farthest from the sun during its annual orbit. Occurs about July 3 when the earth is 94,555,000 miles away from the sun
barrier reef
Earth science; Geology
An elongate organic reef that parallels a coastline and is large enough to dissipate ocean wave, leaving a quiet-water lagoon on its landward side.
adaptive breakthrough
Earth science; Geology
An evolutionary innovation that affords a group of organisms a special ecologic opportunity and often leads to the adaptive radiation of that group.
agonic line
Earth science; Geology
A shifting, irregular imaginary line running through the Earth's north and south magnetic poles along which the compass needle points to true North.
appropriate technology
Earth science; Geology
The technology which is relevant to a country's level of development. The application of appropriate technology may lead to sustainable development.
blister
Earth science; Geology
A swelling of the crust of a lava flow formed by the puffing-up of gas or vapor beneath the flow. Blisters are about 1 meter in diameter and hollow.
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)