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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 
pulsar
Earth science; Geology
A celestial object of small angular size that emits pulses of radio waves with a regular period between about 0.03 and 5 seconds.
pyroxene
Earth science; Geology
A group of the common rock forming minerals with the general formula, ABSi 2 O 6 , where A is chiefly Mg, Fe +2 , Ca or Na, and B is Mg, Fe +2 or Al.
quartz
Earth science; Geology
Crystalline silica, an important rock forming mineral, SiO 2 . It is, next to feldspar, the most common mineral, occurring either in transparent hexagonal crystals or in ...
radiative zone
Earth science; Geology
The inner 70% of the Sun’s radius where heat from the fusion reaction is radiated toward the surface at temperatures of 1.5 x 10 7 K at the base of the zone to temperatures of ...
radiogenic heating
Earth science; Geology
Thermal energy resulting from the decay of radioactive isotopes. Long-lived nuclides are still present in the Earth and other planetary bodies, although in lower abundance than ...
rampart craters
Earth science; Geology
Impact features on Mars that are characterized by a mud-like flow of overlapping lobes out and away from the crater caused when the heat and pressure of an impact fluidized the ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)