PPT-Desert Soils Deserts can be

HOT or COLD But they are all very DRY All deserts have more evaporation then rainfall Deserts cover 2035 of the Earths land surface and 25 of the worlds people ANTARCTICA is actually a large desert. Charlie & Aubrey . We are learning about the desert. The desert is usually hot. There are many deserts . in the . world. The Sonoran Desert is in the western United States.. Deserts are located on every continent of the Earth , even Antarctica. The biggest . By:Anthony Aragon . The Desert . Deserts cover about one fifth of the earth’s land area. The desert is a harsh environment with very little rainfall and extreme temperatures.. What makes a Desert?. By: Ethan Thimmesch and Eli Bailey. Deserts on earth. Deserts in America. The deserts in America are very hot and dry. There are many different herbivores, carnivores and producers in the desert.. Average rainfall . Mr Boland. Geography. Where are deserts found???. What have all deserts got in Common????. Where are deserts?. ......in the . path of the trade winds. , . 15 and 30 degrees. north and south of the equator.. DESERTS. RECEIVE LITTLE RAIN – 10-25 cm per year. SOIL IS RICH IN MINERALS – but poor in organic material (nutrients) because there is NO LEACHING – rain that carries minerals deeper into the soil. Marshall . Plumley. Dmitriy. . Adamia. What is a Desert?. Deserts cover over 1/5 of Earth’s surface . Less than 50cm of precipitation annually. Some deserts receive less than 1.5cm . Very little/no vegetation. Soil Types. 12 Soil Orders. Soil Orders in US. World View. ALFISOL. Moderately Weathered. ANDISOL. Volcanic ash. ARIDISOL. Very Dry. ENTISOL. Newly Formed. Gelisol. Frozen. HISTOSOL. Organic, Wet. INCEPTISOL. Department of Family and Consumer Studies. University of Utah. Food Desert. Broadly conceptualized . as limited access to affordable and nutritious foods, particularly in low income areas. Food . Environment . Deserts Adiabatic Warming and Cooling Warm, moist air masses forced up and over mountains experience decreasing atmospheric pressure and, as a result, expand. This process causes the expanding air mass to release a portion of its latent heat, resulting in a decrease in air temperature. This is called adiabatic cooling. Depending on the height to which the air is forced the air mass temperature may drop below the dew point, resulting in the formation of water droplets and precipitation in the form of rain or snow. As a result, when the air mass reaches the summit, it is cold and dry. Crossing the summit, the air mass descends and compresses. This produces a corresponding increase in atmospheric pressure and, as descent continues, the compressing air mass begin to warm. This is a called adiabatic warming. However, because the moisture was released during the cooling stage, the descending air mass is warm and dry. If sufficient moisture is removed the descending air mass could be dry enough to create a rain shadow effect where precipitation is much lower than surrounding areas. In some cases a rain shadow desert can form. Deserts & Winds: Fluvial and Eolian Processes in Arid Zones Why Do Deserts Exist? Desert – any spot on Earth that receives less than 25 cm (10 in) rain per year Semi-desert – 25-50 cm (10-20 in) Deserts Adiabatic Warming and Cooling Warm, moist air masses forced up and over mountains experience decreasing atmospheric pressure and, as a result, expand. This process causes the expanding air mass to release a portion of its latent heat, resulting in a decrease in air temperature. This is called adiabatic cooling. Depending on the height to which the air is forced the air mass temperature may drop below the dew point, resulting in the formation of water droplets and precipitation in the form of rain or snow. As a result, when the air mass reaches the summit, it is cold and dry. Crossing the summit, the air mass descends and compresses. This produces a corresponding increase in atmospheric pressure and, as descent continues, the compressing air mass begin to warm. This is a called adiabatic warming. However, because the moisture was released during the cooling stage, the descending air mass is warm and dry. If sufficient moisture is removed the descending air mass could be dry enough to create a rain shadow effect where precipitation is much lower than surrounding areas. In some cases a rain shadow desert can form. Desert SoutKZest CESU 2015-2020x000f Amendment FLvex000f Desert BotanLcaO arden PaJe 3 of 5 1201 NortK aOvLn ParNZa ARTC/E V AMENDMENT AUTORN SNATURES UNVERST OF ARONA x000bOSTx000c NN Desert BotanL Soils support the growth of higher plants by providing a medium for plant roots and supplying nutrient elements that are essential to the entire plant.. Soil properties are the principal factor controlling the fate of water in the hydrologic system. Water loss, utilization, contamination and purification are all affected by the soil.. Definition. : Low-income communities without ready access to healthy and affordable food. Effects 23.5 million Americans (including 6.5 million children). Occurs both in urban and rural areas. Consequences of Food Deserts.