GEOGRAPHY AND HISTORY

  The following are Positive effects of desert features Some deflation hollows contain oases which one source of water for domestic and industrial uses Desert feature such as yardangs are tourist attractions Earning foreign exchange Desert land scape provide ideal testing ground for military weapons Loess rocks example those that are found in china the good dwellings particularly in winter when they are warmers Loess deposits one fertile soils suitable for agriculture RELATED POSTS 9 CONDITIONS FAVOURING IRRIGATION FARMING IN EGYPT 5 CAUSES OF RURAL-RURAL MIGRATION IN KENYA 10 AIMS OF KILOMBERO VALLEY IRRIGATION SCHEME 4 FEATURES OF MAP STATEMENT SCALE 10 ADVANTAGES OF OIL PRODUCTION IN THE MIDDLE EAST 7 DISADVANTAGES OF AIR TRANSPORT 10 PROBLEMS FACING COFFEE FARMING IN KENYA IMPACTS OF POVERTY ON ENVIRONMENT 10 PROBLEMS FACING COTTON FARMING IN UGANDA COMPARISON BETWEEN FISHING IN KENYA AND JAPAN

  The following are the Resultant Features of Wind Deposition: Sand Dunes are Low ridge of sand accumulated by wind deposition. Types of sand dunes Barchans this is a crescent-shaped mound of sand in a desert. barchans forming process Sand accumulates around an obstacle lying on the path of the wind . Deposition continues making the mound grow bigger. The wind blows sand over the leeward side creating a smooth gentle windward slope. Wind eddies act on the leeward slope, making it to be steep and concave. Sidewind moves the sand grains on the sides forward creating the two edges which are curved e.g. in the Sahara and Arabia Desert. Characteristics of sand dunes Crescent/moon shaped Smooth gentle windward slope Steep concave leeward slope Horns or 2 curved edges Occurs individually or in groups ii) Seif Dunes this is Ridge shaped mounds of sand lying parallel to the path of the prevailing wind. seif dunes forming process The wind blows between barchan dunes. Wind eddies move sand to...