PPT-DESERTS AND WIND ACTION DESERTS AND WIND ACTION

Disusun Oleh MUNA A1A513065 NORBAITI A1A413030 NOVI NORVAZIRAH A1A513073 Geomorfologi dan Lingkungan chapter 18 DOSEN PENGAJAR Dr DEASY ARISANTY M Sc Drs H SIDHARTA ADYATMA MSi. WHAT IS A DESERT?. Deserts. cover more than one fifth of the . Earth's . land . and they are found on every continent. . Deserts. . can . be . "hot" or "cold". . Deserts. . receive less than 10 inches of precipitation a year. Lack of water creates a survival problem for all . 21:. DESERTS AND WIND. A desert is a . region that . receives less than 25 cm of precipitation per year.. What is the annual precipitation in your region?. Life Support. Vegetation is so sparse, and water so rare, that a desert is unable to support significant populations of animals.. By Elisa Miller. Keystone College. Deserts. Types of Deserts:. Hot and . Dry. Cold Deserts. Gobi Desert in Asia. Desert . of . Antarctica. Locations. Cover 20% of the Earth’s land mass. Latitudes: . 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.. . . introduction. Deserts are all over the world but not in Europe.Not all deserts are sandy. The Antarctica desert is the biggest ice desert in the world.The Sahara desert is the biggest sandy desert in the world.. 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. Hot deserts and cold deserts. Ozlan.net. Before you can create any desert you have to understand how to make the foundation of the desert, this is the base,. The bases are divided into . Pastry which includes Puff Pasty, short sweet paste and choux . 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 . There are four major types of deserts. There are four major types of deserts . Hot and Dry. Semiarid.  Coastal. Cold. Semiarid. The summers are moderately long and dry, while the winters normally bring little rainfall. Summer temperatures usually average between 69-80° F.. 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. +44 (0)1883 744392 . www.discover-morocco-online.com. info@. discover. .ltd.uk. What is the hot desert ecosystem?. A . hot desert ecosystem . is defined as the . interactions between living organisms, .