NCERT Class 7 Geography Chapter 10: Life in Deserts YouTube Lecture Handouts
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NCERT Class 7 Geography Chapter 10: Life in Deserts
NCERT Class 7 Geography
Chapter 10: Life in Deserts
Characteristics
- Extreme High and Low Temperature
- Scarce Vegetation
- Low Rainfall
- Types β Hot & Cold
Sahara (Hot Desert)
- In N. Africa
- WorldΥs Largest Desert
- Area β 8.54 Million Sq. Km.
- 11 Nations β Algeria, Chad, Libya, Mali, Mauritania, Morocco, Niger, Sudan, Tunisia, W. Sahara
- Sand, Plain Gravels, Elevated Plateaus
- At one time it was lush green β Now climate changed
- Highest Temperature β Al Aziza (Tripoli, Libya 57.7oC in 1922)
Sahara (Hot Desert)
- Short rain
- Cloudless and clear sky
- Nights freezing cold with zero degree
- Cactus, Date Palms & Acacia
- Oasis β Water β Depression (Tafilalet Oasis β 13000 Sq. km.)
- Camels, Hyena, Jackals, Fox, Scorpions, Snakes & Lizards
- Oil β Algeria, Egypt & Libya
- Iron, Phosphorous, Magnesium, Uranium
Nomadic Tribes
- Bedouins & Tuaregs β Goats, Sheep, Camel, Horse
- Milk, Hides (from leather for belts, slippers, bottles) , Hari (Mats, Carpets, Blankets)
- Settled Population
- Water β Date Palms
- Wheat, Rice, Barley, Beans
- Egyptian Cotton
- Act as guides for tourists
Ladakh (Cold Desert)
- B/W Karakoram in North & Zanskar in South
- Height β 3000 m in Kargil to 8000 m in Karakoram
- Indus River
- Gangri Glacier (Ladakh)
- Cold & Dry Climate
- Day (0oC) & Night (-30oC)
- Freezing Winds (Frost Bite)
- Hot Sunlight (Sunstroke)
- Called Khapa-Chan (Snow Land)
Ladakh (Cold Desert)
- Sparse Vegetation β Willow & Poplar
- Finest Cricket Bat β Willow Tree
- Apple, Apricot, Walnuts
- Birds β Robin, Redstarts, Tibetan Stopcock, Raven, Hoopoe, Migratory
- Wild Goat, Wild Sheep, Yaks, Dogs β Milk, Meat & Hide
- Yak β Milk β Cheese and Butter
- Sheep & Goat β Hair β Woolens
- Chiru β Tibetan Antelope (Endangered) β Wool Shahtoosh β Light & Warm
Ladakh (Cold Desert)
- Muslims & Buddhists
- Gompas β Buddhist Monasteries
- Famous Monasteries β Hemis, Thiksey, Shey & Lamayuru
- Summer β Barley, Potato, Beans, Peas & Turnip
- Leh β Capital of Ladakh
- NH β Leh to Zojila Pass (Kashmir Valley)
- Manali- Leh Highway (4 Passes β Rohtang La, Baralacha La, Lungalacha La & Tanglang La) β B/W July & September it is open
β Manishika