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NAMING THE REALM z POPULAR LABELS

  • DRY WORLD

  • ARAB WORLD

  • WORLD OF ISLAM

(MUSLIM WORLD)

  • MIDDLE EAST

ANNUAL PRECIPITATION

THREE TYPES OF DESERT

  • hamada = Arabic for rock

  • reg = Arabic for stone

  • erg = Arabic for sand

  • *

    five types of dunes

    • -

      barchan

    • -

      parabolic

    • -

      transverse

    • -

      longitudinal

    • -

      star

Page 2

THE DRY WORLD ?

zDry/arid climate prevails throughout the realm

zExceptions:

  • Peripheral regions of Turkey

  • Northwestern section of Iran

  • Northern Morocco & Algeria

  • Numerous oases

  • Several great river valleys

DESERTIFICATION

"Desertification."Microsoft® Encarta® Encyclopedia 2001. © 1993-2000 Microsoft Corporation. All rights reserved.

Desertification, decline in the biological or economic productivity of the soil in arid and semiarid areas resulting from various factors, including human activities and variations in climate. Desertification refers to the formation and expansion of degraded soil, not to the advancing movement of the current deserts.

HAMADA DESERT

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