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Earth's Spheres
Term | Definition |
---|---|
Atmosphere | the envelope of gases surrounding the earth or another planet. |
Hydrosphere | all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds. |
Cryosphere | The cryosphere is those portions of Earth's surface where water is in solid form, including sea ice, lake ice, river ice, snow cover, glaciers, ice caps and ice sheets, and frozen ground. Thus, there is a wide overlap with the hydrosphere. |
Lithosphere | the rigid outer part of the earth, consisting of the crust and upper mantle. |
Geosphere | any of the almost spherical concentric regions of matter that make up the earth and its atmosphere, as the lithosphere and hydrosphere. Web. |
Biosphere | the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms. |