Mountain terrain & lifestyle

Overview & Fundamental Concept

Complete preparation guide for Mountain terrain & lifestyle under AISSEE Class VI General Knowledge (Syllabus Item 10). Master high-yield facts, exam matrices, solved models, and 10 interactive drill MCQs with detailed explanations.

• Mountain Terrain Characteristics: High relief, steep slopes, rugged rocky surfaces, and thin topsoil subject to rapid erosion; climate grows colder by approximately 6.5°C for every 1,000 meters of elevation gain (normal environmental lapse rate).
• High Altitude Physiology & Hypoxia: At elevations above 2,500 meters, atmospheric pressure drops dramatically, causing fewer oxygen molecules per breath; immediate symptoms of Acute Mountain Sickness (AMS) include headache, nausea, dizziness, fatigue, and shortness of breath.
• Acclimatization Process: The human body adapts to reduced oxygen by increasing respiration rate, elevating heart rate, and stimulating the kidneys to release erythropoietin (EPO), which triggers bone marrow to synthesize more Red Blood Cells (RBCs) over several days.
• Ladakh - India's Cold Desert: Located in the rain shadow of the Great Himalayas; receives very scanty precipitation (less than 10 cm annually); features extreme climatic variations with summer temperatures around 0°C to 15°C and winter temperatures plunging below -30°C to -40°C.
• Gaurav Jani's Journey ('A Shelter So High!' - NCERT EVS): Traveled from Mumbai through Maharashtra, Gujarat, and Rajasthan to reach Delhi, and onward through Jammu and Srinagar to reach Leh and Ladakh on his motorcycle nicknamed 'Loner'.

• The Changpa Tribe: A nomadic pastoral community of around 5,000 individuals living on the high-altitude plateau of Changthang at an elevation of 5,000 meters above sea level.
• Nomadic Mobility: The Changpas move continuously across high plateaus with their herds of goats, sheep, and yaks; their wealth and social status are determined strictly by the number of animals in their flock.
• The Rebo Tent: Large cone-shaped tents constructed from wide strips of yak hair that are hand-woven and stitched together; extremely resilient against icy winds blowing at speeds up to 70 km/h; held securely by 9 wooden stakes driven into the ground with a 2-foot trench dug around the perimeter.
• The Lekha: A sturdy enclosure built adjacent to the Rebo from rough mountain stones, used to pen and safeguard the precious sheep and goats from freezing winds and predators like the snow leopard.
• Every Changpa family marks their own animals with a distinctive brand/symbol; women and young girls count and lead the animals to graze every morning and recount them every evening.
• The Changthangi (Pashmina) Goat: Survives on harsh, windswept mountain pastures at altitudes of 4,000 to 5,000 meters where winter temperatures plummet to -40°C.
• The Finer-Than-Hair Coat: To survive sub-zero blizzards, the goat grows an extraordinary undercoat of ultra-fine hair; this hair is 6 times thinner than a single strand of human hair (six Pashmina fibers together equal the thickness of one human hair).
• Shedding & Combing: In the summer thaw, the goats naturally shed this warm undercoat, which is meticulously combed out by hand (never sheared with clippers).
• Pashmina Shawl Craftsmanship: Because the fibers are excessively fine, they cannot be woven on mechanical industrial looms; Kashmiri artisans hand-weave each shawl on traditional wooden looms.
• Pashmina Benchmarks: Hand-weaving one plain Pashmina shawl requires approximately 250 hours of concentrated labor; a single lightweight Pashmina shawl delivers warmth equivalent to 6 standard woolen sweaters!

• Leh House Architecture: Sturdy two-storey rectangular houses constructed from thick blocks of local stone and bonded with mud and lime plaster.
• Ground Floor Design: The ground floor has NO windows whatsoever; it serves as a sheltered winter barn for livestock (cows, goats, yaks) and storage for dried firewood, fodder, and non-perishable rations; when winter gets brutally cold, the human family also moves down to sleep on the ground floor because it retains heat.
• First Floor Living Quarters: Features wooden floors and windows where the family resides during pleasant seasons.
• Flat Roof Functionality: Roofs are flat, supported by thick trunks of sturdy poplar trees; during late summer, the flat roof is essential for drying crops in the crisp sunlight: red chilies, golden corn, orange pumpkins, potato slices, and paddy grains for winter sustenance.
• Srinagar Dal Lake & Jhelum Water Dwellings: Houseboats (floating residences) measure up to 80 feet in length and 8 to 9 feet in width, featuring intricate wood carvings on ceilings known as 'Khatamband' (geometric jigsaw-like patterns).
• Shikara: Graceful, open-air lightweight wooden passenger boats used for commuting, school transport, and floating vegetable/flower markets on Dal Lake.
• Donga Boats: Long wooden boats floating on Dal Lake and Jhelum river where local Kashmiri families live; contains distinct partitioned rooms just like a house on land.
• Dab (Projecting Windows): Distinctive decorative wooden lattice balconies that jut outward from exterior walls, offering occupants clear views of roads and waters.
• Mehraab: Beautiful ornate arched stone and carved wood doorways characteristic of historic Kashmiri homes.

• Mountain Pass (La): A navigable natural route, saddle, or gap through a rugged mountain range; critical for trade, military logistics, and trans-Himalayan transportation.
• Khardung La (Ladakh): Gateway to the Shyok and Nubra valleys; one of the highest motorable roads in the world, situated at an altitude of 5,359 meters (17,582 ft).
• Zoji La (Ladakh / J&K): Traverses the Great Himalayan range at 3,528 m; vital strategic link connecting Srinagar to Kargil and Leh; Zojila Tunnel is being built to provide all-weather connectivity.
• Rohtang Pass (Himachal Pradesh): Located at 3,978 m on the Pir Panjal range; connects Kullu Valley with the high-altitude Lahaul and Spiti valleys; bypassed for all-weather transit by the 9.02 km long 'Atal Tunnel' (longest highway tunnel above 10,000 feet).
• Shipki La (Himachal Pradesh): Border pass between Kinnaur district of HP and Tibet; the Sutlej River enters India from Tibet through this gorge.
• Nathu La & Jelep La (Sikkim): Strategic border passes connecting Sikkim with the Chumbi Valley of Tibet; historic branch of the Ancient Silk Route; reopened for border trade in 2006.
• Bomdi La (Arunachal Pradesh): High-altitude pass connecting western Arunachal Pradesh (Tawang) with Lhasa, Tibet.
• Mountaineering Pioneer - Bachendri Pal (NCERT EVS 'Up You Go!'): Born in Nakuri village (Uttarkashi, Uttarakhand); trained at the Nehru Institute of Mountaineering (NIM) under Brigadier Gyan Singh; on May 23, 1984, she became the first Indian woman (and 5th in the world) to reach the summit of Mount Everest (8,848.86 m), spending 43 minutes on the peak.
• Mountaineering Gear: Crampons (spiked shoe plates for walking on hard glacier ice), Ice Axe (for cutting ice steps and self-arrest), Pitons and Carabiners/Slings (metal safety anchors and snap-links), Nylon Kernmantle Ropes, Rucksack, Oxygen cylinders.