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الموضوع: تقرير عن الصحراء باللغة الإنجليزي

  1. #1
    عضو جديد
    تاريخ التسجيل
    Feb 2009
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    1

    تقرير عن الصحراء باللغة الإنجليزي

    عاجل الرجاء ارسال تقرير باللغة الإنجليزية عن الصحراء


    مشاركتك تسعدنا ورأيك يهمنا


  2. #2
    عضو جديد
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    Sep 2008
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    3

    افتراضي

    انا بعد اريد

  3. #3
    عضو جديد
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    Feb 2009
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    افتراضي

    انااااااااا بعد ابي بليز

  4. #4
    عضو جديد
    تاريخ التسجيل
    Sep 2008
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    UAE
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    9

    افتراضي

    هذا تقرير عن desert

    --------------------------------------------------------------------------------

    desert...

    Plants

    Animals

    Climate



    Mojave Desert

    Sonoran Desert
    In this report you will learn about Hot and Dry Deserts and Cold Deserts. I hope you enjoy!

    A Hot and Dry Desert is, as you can tell from the name, hot and dry. Most Hot and Dry Deserts don't have very many plants. They do have some low down plants though. The only animals they have that can survive have the ability to burrow under ground. This is because they would not be able to live in the hot sun and heat. They only come out in the night when it is a little cooler.

    A cold desert is a desert that has snow in the winter instead of just dropping a few degrees in temperature like they would in a Hot and Dry Desert. It never gets warm enough for plants to grow. Just maybe a few grasses and mosses. The animals in Cold Deserts also have to burrow but in this case to keep warm, not cool. That is why you might find some of the same animals here as you would in the Hot and Dry Deserts.

    Deserts cover about one fifth of the Earth's land surface. Most Hot and Dry Deserts are near the Tropic of Cancer or the Tropic of Capricorn. Cold Deserts are near the Arctic part of the world.

    Hot and Dry Deserts temperature ranges from 20 to 25° C. The extreme maximum temperature for Hot Desert ranges from 43.5 to 49° C. Cold Deserts temperature in winter ranges from -2 to 4° C and in the summer 21 to 26° C a year

    The precipitation in Hot and Dry Deserts and the precipitation in Cold Deserts is different. Hot and Dry Deserts usually have very little rainfall and/or concentrated rainfall in short periods between long rainless periods. This averages out to under 15 cm a year. Cold Deserts usually have lots of snow. They also have rain around spring. This averages out to 15 - 26 cm a year.

    Hot and Dry Deserts are warm throughout the fall and spring seasons and very hot during the summer. the winters usually have very little if any rainfall. Cold Deserts have quite a bit of snow during winter. The summer and the beginning of the spring are barely warm enough for a few lichens, grasses and mosses to grow.

    Hot and Dry Deserts vegetation is very rare. Plants are almost all ground-hugging shrubs and short woody trees. All of the leaves are replete (packed with nutrients). Some examples of these kinds of plant are Turpentine Bush, Prickly Pears, and Brittle Bush. For all of these plants to survive they have to have adaptations. Some of the adaptations in this case are the ability to store water for long periods of time and the ability to stand the hot weather.

    Cold Desert's plants are scattered. In areas with little shade,about 10 percent of the ground is covered with plants. In some areas of sagebrush it reaches 85 percent. The height of scrub varies from 15 cm to 122 cm. All plants are either deciduous and more or less contain spiny leaves.

    Hot and Dry Deserts animals include small nocturnal (only active at night) carnivores. There are also insects, arachnids, reptiles, and birds. Some examples of these animals are Borrowers, Mourning Wheatears, and Horned Vipers. Cold Deserts have animals like Antelope, Ground Squirrels, Jack Rabbits, and Kangaroo Rats.

  5. #5
    عضو جديد
    تاريخ التسجيل
    Sep 2008
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    UAE
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    9

    افتراضي

    من معهد الامارات التعليمي :




    A desert is a landscape form or region that receives very little precipitation

    Deserts are defined as areas that receive an average annual precipitation of less than 250
    mm (10 in). In the Köppen climate classification system, deserts are classed as (BW).

    مقدمه

    Geography


    A satellite image of the Sahara, the world's largest hot desert and second largest desert after Antarctica.
    Deserts take up one-third of the Earth's land surface.[1] They usually have a large diurnal and seasonal temperature range, with high daytime temperatures (in summer up to 45 °C or 113 °F), and low night-time temperatures (in winter down to 0 °C; 32 °F) due to extremely low humidity. Water acts to trap infrared radiation from $$$$ the sun and the ground, and dry desert air is incapable of blocking sunlight during the day or trapping heat during the night. Thus during daylight most of the sun's heat reaches the ground. As soon as the sun sets the desert cools quickly by radiating its heat into space. Urban areas in deserts lack large (more than 25 °F/14 °C) daily temperature ranges, partially due to the urban heat island effect.
    Many deserts are formed by rain shadows, mountains blocking the path of precipitation to the desert. Deserts are often composed of sand and rocky surfaces. Sand dunes called ergs and stony surfaces called hamada surfaces compose a minority of desert surfaces. Exposures of rocky terrain are typical, and reflect minimal soil development and sparseness of vegetation.


    The snow surface at Dome C Station in Antarctica is a representative of the majority of the continent's surface.
    Bottomlands may be salt-covered flats. Eolian processes are major factors in shaping desert landscapes. Cold deserts (also known as polar deserts) have similar features but the main form of precipitation is snow rather than rain. Antarctica is the world's largest cold desert (composed of about 98 percent thick continental ice sheet and 2 percent barren rock). The largest hot desert is the Sahara.
    Deserts sometimes contain valuable mineral deposits that were formed in the arid environment or that were exposed by erosion. Because deserts are so dry, they are ideal places for artifacts and fossils to be preserved.
    Desert - Wikipedia, the free encyclopedia
    desert world

  6. #6
    عضو جديد الصورة الرمزية ولـ الشوامس ـد
    تاريخ التسجيل
    Mar 2009
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    8

    افتراضي

    مشكوري علي تقرير وايد استفد منه:::::؟

  7. #7
    عضو جديد
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    Feb 2009
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    افتراضي

    ثاااااااااانكس علي التقرير :

  8. #8
    عضو جديد الصورة الرمزية aloOonly
    تاريخ التسجيل
    Oct 2007
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    uae
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    3

    افتراضي

    ثاااااااااااااااااااااااااااااااااانكس

  9. #9
    عضو جديد
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    Mar 2009
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    افتراضي

    مشكورين على تقرير

  10. #10
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    Oct 2008
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    افتراضي

    ثاااااااااااااانكس

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