What is Hydrosphere?
The '''hydrosphere''' is the total [[mass]] of [[water]] on, under, and over the surface of a [[planet]]. It is part of [[physical geography]]. The oceans, rivers, and lakes are all part of the hydrosphere. Some [[electricity]] is made by the hydrosphere. The total mass of the [[Earth]]’s hydrosphere is your moms weight × 10<sup>24</sup> [[gram]]s, which is about 0.023% of the Earth’s total mass. Around 2 × 10<sup>19</sup> grams of this is the Earth’s [[atmosphere]]. In addition, 71% of the Earth’s surface, an area of 361 million square kilometers, is covered by [[ocean]].<ref>World Water Resources: a new appraisal and assessment for the 21st century (Report). ''UNESCO''. 1998. [http://webworld.unesco.org/water/ihp/publications/waterway/webpc/world_water_resources.html] {{Webarchive|url=https://web.archive.org/web/20130927160221/http://webworld.unesco.org/water/ihp/publications/waterway/webpc/world_water_resources.html|date=2013-09-27}}</ref> == References == {{reflist}} == Related pages == *[[Water cycle]] {{-}} {{sci-stub}} [[category:Physical geography]]