Key Concepts & Self-Assessment15 Key Facts
Review key World Mountain Ranges, Major Plateaus & Hyper-Arid Deserts exam facts and rate your mastery to track revision.
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#1
The Andes range (7,000 km) is the longest continental mountain system, formed by the subduction of the Nazca Plate under the South American Plate.
#2
The Tibetan Plateau is the world's highest and most expansive plateau (~4,500 m average elevation), driving Asian monsoonal thermodynamics.
#3
The Sahara Desert is the largest subtropical hot desert on Earth, sustained by the descending limb of the Hadley atmospheric circulation cell.
#4
The Atacama Desert in Chile represents the driest non-polar region globally due to the cold offshore Humboldt (Peru) Current and rain-shadow effect.
#5
The Gobi Desert is a prominent rain-shadow cold desert situated in Mongolia and northern China, sheltered from monsoonal air masses by the Himalayas.
#6
Mount Aconcagua (6,961 m) in Argentina is the highest peak in the Andes, the Americas, and the Western and Southern Hemispheres.
#7
The Rocky Mountains stretch over 4,800 km from northern British Columbia to New Mexico, with Mount Elbert (4,401 m) in Colorado as the highest summit.
#8
The Alps were formed during the Alpine orogeny by the collision of the African and Eurasian plates, culminating in Mont Blanc (4,808 m) on the French-Italian border.
#9
The Ural Mountains run north-south through western Russia, forming the conventional geographic boundary between Europe and Asia.
#10
The Great Dividing Range in eastern Australia stretches over 3,500 km, terminating in Mount Kosciuszko (2,228 m) as mainland Australia's highest peak.
#11
The Colorado Plateau in the southwestern United States is characterized by uplifted sedimentary strata deeply dissected by the Colorado River, carving the Grand Canyon.
#12
The Anatolian Plateau occupies central Turkey between the Pontic Mountains and the Taurus Mountains, featuring extensive volcanic landscapes like Cappadocia.
#13
The Rub' al Khali (Empty Quarter) in the southern Arabian Peninsula is the world's largest contiguous sand desert (erg), spanning over 650,000 square kilometres.
#14
The Namib Desert along the coast of Namibia is an ancient coastal desert created by the cold offshore Benguela Current, featuring towering red sand dunes at Sossusvlei.
#15
Antarctica is technically classified as the largest desert on Earth, receiving less than 50 mm of precipitation annually across its interior polar plateau.
Subject Specialist Commentary
Analytical perspective & practical exam advice from the Master10 academic board
Mountain chains, elevated plateaus, and deserts shape Earth's continents through tectonic uplift and atmospheric circulation. The Andes in South America form the longest continental range, formed by the Nazca Plate subducting under the South American Plate. High tablelands like the Tibetan Plateau drive Asian monsoons through intense thermal heating. Meanwhile, subtropical deserts like the Sahara arise beneath sinking dry air, while coastal deserts like the Atacama owe their hyper-arid climate to the cold offshore Humboldt Current.
For UPSC and State PSC exams, examiners regularly test the geographic causes of desert formation and mountain relief. Remember that the Atacama's dryness stems from the cold Humboldt Current paired with a rain shadow, whereas the cold Gobi Desert lies sheltered behind the Himalayas. A common MCQ trap tests regional summits: Mount Aconcagua tops the Americas, while Mont Blanc crowns the Alps. In your revision, note that the Ural Mountains divide Europe from Asia.
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