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Earth science

Earth's spheres
Earth science generally recognizes four spheres, the lithosphere, the hydrosphere, the atmosphere, and the biosphere; these correspond to rocks, water, air, and life. Some practitioners include, as pa ...
2014-3-23 09:20
Methodology
Methodologies vary depending on the nature of the subjects being studied. Studies typically fall into one of three categories: observational, experimental, or theoretical. Earth scientists often condu ...
2014-3-23 09:20
Atmosphere
The troposphere, stratosphere, mesosphere, thermosphere, and exosphere are the five layers which make up Earth's atmosphere. In all, the atmosphere is made up of about 78.0% nitrogen, 20.9% oxygen, an ...
2014-3-23 09:19
Earth's electromagnetic field
An electromagnet is a magnet that is created by a current that flows around a soft iron core. Earth has a solid iron inner core surrounded by semi-liquid materials of the outer core that move in conti ...
2014-3-23 09:19
Earth's interior
Plate tectonics, mountain ranges, volcanoes, and earthquakes are geological phenomena that can be explained in terms of energy transformations in the Earth's crust.Beneath the Earth's crust lies the m ...
2014-3-23 09:19
Fields of study
The following fields of science are generally categorized within the Earth Sciences:Geology describes the rocky parts of the Earth's crust (or lithosphere) and its historic development. Major subdisci ...
2014-3-23 09:18
Earth science
Earth science is an all-embracing term for the sciences related to the planet Earth. It is arguably a special case in planetary science, the Earth being the only known life-bearing planet. There are b ...
2014-3-23 09:18

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