Geography 1100 Lecture Notes - Land Degradation, Weathering, Ernest Shackleton
Document Summary
10)to understand state identity by centrifugal and centripetal forces. Single language, common cultural history, strong polarizing core area, well defined and uncontested boundaries (eg sea coast, mountain ranges); low population density in boundary/frontier areas. 1)to understand the causes of drought in the us great plains during the 1930"s. These were the most effected states but went to canada. It was called the dust bowl because the land blew out and away. The dust bowl is like a bike pump, as you press the air in and out the pump gets hot. As air moves across the earths surface is get deflected to the right. The dust bowl was a dry period for prolonged period of time. the wind would catch the earths surfaces and move it around as dust. Because of the drought there arose many ecological and agticuatural problems. It wasn"t possible for plants to grow during the drought. no soil present, just sand, so no plants could grow.
