Water is a topic that has always been close to my heart. It is quite amazing that all living things are absolutely dependent on two little hydrogens and an oxygen. Generally I am most interested in the consequences of a lack of water for those in need, but it all begins with a river or stream. Last week (2/6-2/10) Earth and Environmental Science spent time investigating the fate of precipitation after it completes its journey to Earth.
Our week in review is filed by A'jewel Leak and Brianna Jackson. A'jewel writes:
Last week we define the term watershed, which is an area where water drains into a stream system. Examples of a watershed includes the Mississippi River and the Nile River. We learned that a stream can carry its load in 3 different ways. These 3 ways includes solution, suspension and bed load. When material is dissolved in a stream's water, material is carried through solution. Suspension occurs when particles are small enough that it can be held up by the water an material that is too big to be suspended is bed load. We also talked about how headwaters starts off a stream and the moving water creates a path in the ground, which is called a stream channel. We also discussed eutrophication a process that occurs when watershed causes lakes to become filled with nutrients, resulting in a change in the organisms. This week was fun because we got to work with partners and learn how streams work and see the different types of species in a polluted stream and a non-polluted stream.
In the last week of class we learned about the water and ways it works. We learned the definition of a watershed, which is an area that allows water to drain into a stream system. The Nile river is an example of a "watershed". Solution, suspension, and bed load are the 3 ways a stream can carry their loads. We learned that stream channels are paths created by water. Another thing we learned was the process of eutrophication. It's when decaying bacteria such as fungi flow into the ocean and take up all the oxygen, killing off fishes and other sea creatures.