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:
“A Republic! Look in the history of the Earth ... To be the first man—not the Dictator, not the Sylla, but the Washington or the Aristides, the leader in talent and truth—is next to the Divinity!”
—George Gordon Noel Byron (1788–1824)
“It launch’d forth filament, filament, filament, out of itself,
Ever unreeling them, ever tirelessly speeding them.
And you O my soul where you stand,
Surrounded, detached, in measureless oceans of space,
Ceaselessly musing, venturing, throwing, seeking the spheres to connect them,
Till the bridge you will need be form’d, till the ductile anchor hold,
Till the gossamer thread you fling catch somewhere, O, my soul.”
—Walt Whitman (1819–1892)