Pedirka Desert

Deserts in Australia

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• published: 05 Nov 2013
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Thanks for watching...... 1) Central Desert 2) Great Victoria Desert 3) Great Sandy Desert 4) Tanami Desert 5) Simpson Desert 6) Gibson Desert 7) Little Sandy Desert 8) Strzelecki Desert 9) Sturt Stony Desert 10) Tirari Desert http://en.wikipedia.org/wiki/List_of_deserts A desert is a type of terrain where little precipitation occurs and consequently living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation. About one third of the land surface of the world is arid or semi-arid. This includes much of the polar regions where little precipitation occurs and which are sometimes called "cold deserts". There are a number of ways of classifying deserts including by the amount of precipitation that falls, by the temperature that prevails, by the causes of desertification or by the geographical location of the desert. Deserts are formed by weathering processes as large variations in temperature between day and night put strains on the rocks which consequently break in pieces. Although rain seldom occurs in deserts, there are occasional downpours that can result in flash floods. Rain falling on hot rocks can cause them to shatter and the resulting fragments and rubble strewn over the desert floor is further eroded by the wind. This picks up particles of sand and dust and wafts them aloft in sand or dust storms. Wind-blown sand grains striking any solid object in their path can abrade the surface. Rocks are smoothed down and the sand grains break in pieces until they are a uniform size. The grains end up as level sheets of sand or are piled high in billowing sand dunes. Other deserts are flat, stony plains where all the fine material has been blown away and the surface consists of a mosaic of smooth stones. These areas are known as desert pavements and little further erosion takes place. Other desert features include rock outcrops, exposed bedrock and clays once deposited by flowing water. Temporary lakes may form and salt pans may be left when waters evaporate. There may be underground sources of water in the form of springs and seepages from aquifers. Where these are found, oases can occur. Source: http://en.wikipedia.org/wiki/Desert I, Kaushik Biswas, hereby declare that all information regarding this video I collect from www.wikipedia.org and all Images use to make this video is from Google Search www.google.com . I use Google Advanced Search to collect those images, usage rights : "free to use, share or modify, even commercially" section. Background Sound of this video I collect from Youtube Audio Library which are free to use. Thank you