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Stream and erosion
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Rivers and Erosion
Introduction to rivers and erosion
Introduction.
Hello, my name is Sebastian Steip. In this essay I will be discussing rivers, river erosion and other types of erosion. the definition of erosion is the gradual destruction or diminution of something.
Examples
Water
Wind
Rivers
Rivers.
A river is a large stream of fresh water. High in the mountains, snow melts and forms little streams that gather together to form a river rushing down through hills and valleys. Lower down most rivers move slowly through flatter land before reaching the sea.
Examples of different kinds of rushing water
White water(rushing water) is water that is in a river that is usually near rocks where the riverbed can not smooth out evenly.
Calm water is water in a river not usually near water falls or steep rivers.
River erosion
When a river winds it displaces rocks and dirt. The loops and curves of a slow moving river are called meanders. The fastest water on a meander is on the outer edge, gradually widening the valley. Sediment is deposited on the slow inner edge
River erosion
Other types of erosion
There are many types of erosion. I discussed some about the erosion from streams that widen them. I will discuss ice erosion, gravity induced erosion. and wind erosion.
Other types of erosion.
Ice erosion
Ice Erosion
Water expands by 9% when frozen. When ice seeps between cracks in cliffs and mountains and freezes it expands and pry's the rocks apart and over time this repeated process causes Rocks to fall down the cliff or mountain causing erosion.
Gravity induced Erosion
Gravity causes erosion in the form of avalanches and landslides.
Gravity Induced Erosion
Wind erosion
Wind erosion refers to the transportation of sand dirt and dust by wind. This usually occurs in flat, sandy areas.
Wind Erosion
Conclusion
Erosion is a natural process of shaping and changing the geographical features of the Earth. I hope you have learned something from this presentation on this process of nature.