Friday, October 12, 2012

Weathering and Erosion


   There are three types of erosion: wind, ice, and water. Water takes sediment downstream. It drops off at the end making a delta. Waves erode our beaches.  We can try to put a jetty in the middle of the ocean to stop the waves but it won’t work. It only helps a little. A house by the water can wash away because of the big waves you would not want to live by a beach. Also there are two types of weathering: physical and chemical.   Chemical weathering creates new forms of rock into different materials. Physical weathering only the size of the rock is changed.  Weathering changes a lot of things. A delta is formed by weathering. Water, ice, gravity, and wind is worked by weathered rock it is called erosion. In colder parts of Earth moving ice erodes landforms. Earth’s landforms are constantly changing.

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