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Thingas Essay

  • Submitted by: Bry123456
  • on May 3, 2012
  • Category: English
  • Length: 894 words

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Below is an essay on "Thingas" from Anti Essays, your source for research papers, essays, and term paper examples.

The Five Spheres

Geosphere
The Geosphere contains all of the cold, hard solid land of the planet's crust (surface), the semi-solid land underneath the crust, and the liquid land near the center of the planet (the surface of the geosphere is very uneven). There are high mountain ranges like the Rockies and Andes, huge plains or flat areas like those in Texas, Iowa, and Brazil, and deep valleys along the ocean floor.  
The solid, semi-solid, and liquid land of the lithosphere form layers that are physically and chemically different. The outermost layer of the lithosphere consists of loose soil rich in nutrients, oxygen, and silicon. Beneath that layer lies a very thin, solid crust of oxygen and silicon. Next is a thick, semi-solid mantle of oxygen, silicon, iron, and magnesium. Below that is a liquid outer core of nickel and iron. At the center of Earth is a solid inner core of nickel and iron.
Hydrosphere
The hydrosphere contains all the solid, liquid, and gaseous water of the planet (it ranges from 10 to 20 kilometers in thickness). The hydrosphere extends from the Earth's surface downward several kilometers into the geosphere and upward about 12 kilometers into the atmosphere. 

A small portion of the water in the hydrosphere is fresh (non-salty). This water flows as precipitation from the atmosphere down to Earth's surface, as rivers and streams along Earth's surface, and as groundwater beneath Earth's surface. Most of Earth's fresh water, however, is frozen. 

Ninety-seven percent of Earth's water is salty. The salty water collects in deep valleys along Earth's surface. These large collections of salty water are referred to as oceans. Water near the poles is very cold while water near the equator is very warm. The differences in temperature cause water to change physical states. Extremely low temperatures like those found at the poles cause water to freeze into a solid such as a polar icecap, a glacier, or an iceberg. Extremely high temperatures like...

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  • Submitted by: Bry123456
  • on May 3, 2012
  • Category: English
  • Length: 894 words
  • Views: 258
  • Popularity Rank: 499450
  • 1 rating(s)

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