Earth's Spheres
The Earth's spheres are the many "spheres" into which the planet Earth is divided. The four most often recognized are the atmosphere, the biosphere, the hydrosphere and the geosphere. As a whole, the system is sometimes referred to as an ecosphere. Listed roughly from outermost to innermost the named spheres of the Earth are:
- Magnetosphere
- Atmosphere, the gases that surround the Earth (its air)
- By altitude
- Exosphere
- Exobase
- Ionosphere
- Thermopause
- Thermosphere
- Mesopause
- Mesosphere
- Stratopause
- Stratosphere
- Ozone layer
- Tropopause
- Troposphere
- Planetary boundary layer
- By air turbulence
- Heterosphere
- Turbopause
- Homosphere
- By altitude
- Biosphere, all life on Earth
- Anthroposphere
- Noosphere (rare)
- Anthroposphere
- Hydrosphere, all water found on, under, and over the surface of Earth
- Cryosphere (sometimes)
- Pedosphere
- Geosphere
- Lithosphere
- Crust (geology)
- Asthenosphere
- Mesosphere
- Earth's mantle
- Earth's core
- Inner core
- Outer core
- Lithosphere
Read more about this topic: Outline Of Earth Science
Famous quotes containing the words earth and/or spheres:
“To see the earth as we now see it, small and beautiful in that eternal silence where it floats, is to see ourselves as riders on the earth together, brothers on that bright loveliness in the unending night—brothers who see now they are truly brothers.”
—Archibald MacLeish (1892–1982)
“The world has already learned that woman has other virtues than meekness, patience, humility and endurance. She possesses courage above all fear, and a will that knows no obstacles; and when these are called forth by some great emergency, false modesty is trampled in the dust, and spheres are scattered to the winds.”
—A. Holley, U.S. women’s magazine contributor. The Lily, p. 38 (May 1852)