Highest in New England and North Carolina, this broad system covers more than 1, 200 miles to form the rocky backbone of the eastern United States. The Blue Ridge Mountains form a substantial part, 615 miles, of the far-reaching Appalachians. They begin as a narrow, low ridge in ...
Explain how these cause mechanical weathering: Ice: water settles into cracks, freezes and expands, making cracks get larger. Glaciers can cause rock to be scraped away as it moves downhill.Water: Rivers flowing over rocks can wear them down. Wind: Sand can be blown against rock, wearing ...