Difference between revisions of "Earth Science"
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The following fields of [[science]] are generally categorized within the geosciences: | The following fields of [[science]] are generally categorized within the geosciences: | ||
| − | *[ | + | *[https://en.wikipedia.org/wiki/Geology Geology] describes the rocky parts of the Earth's crust (or [https://en.wikipedia.org/wiki/Lithosphere lithosphere]) and its historic development. Major subdisciplines are mineralogy and petrology, geochemistry, geomorphology, [https://en.wikipedia.org/wiki/Paleontology paleontology], [https://en.wikipedia.org/wiki/Stratigraphy stratigraphy], structural geology, engineering geology and sedimentology. |
| − | *[ | + | *[https://en.wikipedia.org/wiki/Physical_geography Physical geography] covers the aspects of [https://en.wikipedia.org/wiki/Geomorphology geomorphology], [https://en.wikipedia.org/wiki/Oceanography oceanography], climatology and biogeography.[citation needed] |
| − | *[ | + | *[https://en.wikipedia.org/wiki/Geophysics Geophysics] and geodesy [[investigate]] the shape of the [[Earth]], its reaction to forces and its [[magnetic]] and [[gravity]] fields. Geophysicists explore the [https://en.wikipedia.org/wiki/Earth%27s_core Earth's core] and [https://en.wikipedia.org/wiki/Earth%27s_mantle mantle] as well as the tectonic and seismic activity of the lithosphere. |
| − | *[ | + | *[https://en.wikipedia.org/wiki/Soil_science Soil science] covers the outermost layer of the Earth's crust that is subject to soil formation processes (or [https://en.wikipedia.org/wiki/Pedosphere pedosphere]). Major subdisciplines include edaphology and pedology. |
| − | *[ | + | *[https://en.wikipedia.org/wiki/Oceanography Oceanography] and hydrology (includes limnology) describe the marine and freshwater domains of the watery parts of the Earth (or hydrosphere). Major subdisciplines include hydrogeology and physical, chemical, and biological oceanography.[citation needed] |
| − | *[ | + | *[https://en.wikipedia.org/wiki/Glaciology Glaciology] covers the icy parts of the Earth (or cryosphere). |
| − | *[ | + | *[https://en.wikipedia.org/wiki/Atmospheric_sciences Atmospheric sciences] cover the [[gaseous]] parts of the Earth (or [[atmosphere]]) between the surface and the [https://en.wikipedia.org/wiki/Exosphere exosphere] (about 1000 km). Major subdisciplines are meteorology, climatology, atmospheric chemistry and atmospheric physics.[https://en.wikipedia.org/wiki/Earth_science] |
Latest revision as of 01:03, 13 December 2020
Earth science (also known as geoscience, the geosciences or the Earth sciences) is an all-embracing term for the sciences related to the planet Earth. It is taken to be a special case in planetary science, given the Earth is the only life-bearing planet currently discovered. There are both reductionist and holistic approaches to Earth sciences. The formal discipline of Earth sciences may include the study of the atmosphere, hydrosphere, oceans and biosphere, as well as the solid earth. Typically Earth scientists will use tools from physics, chemistry, biology, and mathematics to build a quantitative understanding of how the Earth system works, and how it evolved to its current state.
The following fields of science are generally categorized within the geosciences:
- Geology describes the rocky parts of the Earth's crust (or lithosphere) and its historic development. Major subdisciplines are mineralogy and petrology, geochemistry, geomorphology, paleontology, stratigraphy, structural geology, engineering geology and sedimentology.
- Physical geography covers the aspects of geomorphology, oceanography, climatology and biogeography.[citation needed]
- Geophysics and geodesy investigate the shape of the Earth, its reaction to forces and its magnetic and gravity fields. Geophysicists explore the Earth's core and mantle as well as the tectonic and seismic activity of the lithosphere.
- Soil science covers the outermost layer of the Earth's crust that is subject to soil formation processes (or pedosphere). Major subdisciplines include edaphology and pedology.
- Oceanography and hydrology (includes limnology) describe the marine and freshwater domains of the watery parts of the Earth (or hydrosphere). Major subdisciplines include hydrogeology and physical, chemical, and biological oceanography.[citation needed]
- Glaciology covers the icy parts of the Earth (or cryosphere).
- Atmospheric sciences cover the gaseous parts of the Earth (or atmosphere) between the surface and the exosphere (about 1000 km). Major subdisciplines are meteorology, climatology, atmospheric chemistry and atmospheric physics.[1]
