GEO 110 Lecture 7: Streams and River Systems
31 Oct 2016
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Document Summary
Continuous interchange of water between the spheres (biosphere, geosphere, atmosphere, hydrosphere, cryosphere, etc. ) Energy is neither created nor destroyed but it can change from one form to another (e. g. liquid to gas, solid to liquid) All rivers flow into the sea but the sea is never full because of the water cycle. Benefits: redistribution or transfer water from one land mass to another, purification of water. If you have contaminated water on land, freshwater evaporates leaving the contaminants behind: nutrient recycling. Largest river is the world is the amazon river in brazil. Mississippi river in the u. s. is the second largest. Longest river is the nile river that goes through sudan, egypt and africa. 70% of the world"s surface area is water. Oceans account for 97. 5% of the volume of water in the world also it is salty due to large amount of dissolved minerals such as sodium chloride, potassium and magnesium.
