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Science Prezi

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by

Emily Ong

on 4 May 2012

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Transcript of Science Prezi

River System Type of River Rivers and
Groundwater Double click to crop it if necessary Important
Details (cc) photo by Metro Centric on Flickr (cc) photo by Franco Folini on Flickr (cc) photo by jimmyharris on Flickr (cc) photo by Metro Centric on Flickr When you take a shower notice that individual drops of water join to become small streams. The streams join other small streams and form larger streams. Eventually, all of the water flows down the drain Every time you shower you are making a model of water system The largest watershed in the United State is the Mississippi River watershed. Old Rivers Mature Rivers Youthful Rivers Rejuvenated Rivers More!! Water Pollution Stream Erosion By Emily Ong
Per. 6
5/4/12 A youthful erodes its channel deeper than wider. Its channel is narrow and straight. A mature river erodes its channel wider rather than deeper. The gradient of a mature river is not as steep as that of a youthful river. When land rises, the river's gradient becomes steeper and the river flows more quickly. This rapid water flow allows the river to cut more deeply into the valley floor. An old river has low gradient, so it has little erosive energy. An old river has wide, flat floodplains, or river valleys, and many bends. Using Water Wisely 65% of your body is made of water.

3% of Earth's water is drinkable.

75% is frozen in the polar ice cap. Water pollution is waste matter or other material that is introduced into into water and that is harmful to organisms. In 1969, the Cuyahoga River in Cleveland, Ohio was so polluted that the river caught on fire and burned for several days. The Clean Water Act of 1972 opened the door for other water-quality laws. Pollution comes from a factory or a leaking gas station tank. A river can be polluted by runoff from any of the land in the river's watershed Water Cycle This is a huge mountain Have you ever wondered where the water in rivers comes from? This water is part of the water cycle. The major source of energy that drives the water cycle is the SUN! ... small The water cycle start with all Condensation, Precipitation, Percolation, Runoff, and Evaporation A stream forms as water erodes soil and rick to make a channel Gradient is the measure of the change in elevation over a certain distance. The amount of water that a stream or river carries in a given amount of time is called discharge A stream forms as water erodes soil and rock to make a channel A channel is the path that a stream follows After river erode rock and soil, they deposit their load down stream Rock and soil that are deposited by streams are sediment The Mississippi Delta has formed where the Mississippi River flows into the Gulf of Mexico When the stream overflows, its called a flood Floods Flooding can cause a stream to change its path During a flood, a stream's bank may collapse and may change the water's course Credits Emily Ong Stream Deposit THANK YOU!!!!
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