Sunday, March 27, 2011

Chapter 20 homework

Chapter 20 section 1:
     1. The shifting of tectonic plates has cause volcanic activity and deep lakes that run parallel to the Great Rift Valley.
     2. The landforms usually cause rivers crossing he plateaus to plunge down the escarpments in cataracts, or waterfalls.

Creative Writing: As each nation tries to take advantage of their natural resources, landforms can easily get in their way or divide them. For example, a mountain range could prevent one nation from harvesting any of their resources during winter. Other problems that come from this are competition for resources that come from landform barriers.

Chaoter 20 section 2:
     1. In addition to rainfall, ocean currents, prevailing winds, elevation, and latitude cause variations in the climate.
     2. Desert, tropical, mediterranean, subtropical, and marine coast climates are all found south of the Sahara.

Creative Writing: In America’s Great Plains and Africa’s Serengeti Plains both of these regions have some highland climate regions and grassland type vegetation. Both of the regions are have dry climate zones in a steppe. Although, Africa’s Serengeti Plain is surrounded by tropical wet climate regions and the Great Plains are engulfed by midlatitude climate and dry climate areas such as deserts.

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