One part of the water cycle is evaporation. Evaporation is the process by which water changes from a liquid to a gas or vapor. Evaporation is the major pathway that water moves from the liquid state back into the water cycle as water vapor from the atmosphere. Heat or energy has to be present for this to happen. Evaportation from the oceans is the main thing that supports the water cycle. Transpiration is when evaporation comes from the plants and into the atmosphere. Condensation is the process of vapor in the air turning into water. This is cruical because it forms the clouds, which produce precipitation and so on. Precipitation is water that comes out of clouds, or hail, snow, and etc. It major in the water cycle because it puts water on earth. Infiltration is when rain falls from the clouds it goes into the ground and rocks. Surface run-off keeps the oceans full along with precipitaion. Ground water is large amounts of water stored underground. This happens when precipitaion goes into the ground and down in this storage. Absorption is when water falls down into the ground or on plants the absorb it.
The waterflow typically always flows toward oceans, large body of water or flow downward. Since our earth is not completely flat and is hill some water flows toward valleys of depressions. Goundwater also has a flow but it is very slow.
stream in MalaysiaOne type of river is a clearwater river. Which are found in the highlands of south america. They have a higher ph then most rivers which makes them harder then other rivers since they dissolve some minerals. They are made of ancients rocks among them, and they dont erode as much as other rivers since they have been around a long time. There also can be an abundant amount of plants growing also due to the ancient rocks and etc. around.
Rio Negro, Brazil 1999 Backwater rivers are very low in dissolved minerals and often have no measurable water hardness. These rivers are very acidic, almost sterile with Ph of 3.5-6. They are considered one of the cleanist type of rivers. Surounding these kinds of rivers are blackwater forests. There are not many insects around these rivers or forest because of the harsh acidicy of them. There soil around these rivers are also very poor and have low nutrience.
Whitewater rivers
They have the look of mud or dirt was all in them. Like as an example the Amazon. This is from sediment from the run-offs into the river. They flow relatively very slow and calm because of the flat surface of the rainforests. One great animal that is in these rivers are the river dolphins, which have almost no eyesight. So the dirty water doesnt bother them.
Sources
-All Pictures from the bottom 2 sources also.
-Howard Perlman (Wednesday, Nov. 4, 2009 http://ga.water.usgs.gov/edu/watercycle.html
-Rhett A. Butler (11/17/09)
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