07. Life in the Desert Class 7 Geography Chapter 7 Notes for CBSE and UPSC
Welcome to Life in the Deserts Class 7 Geography Chapter 7 Notes for CBSE and UPSC.
Exam Notes for Chapter 7 Life in the Deserts
Introduction
- Living in deserts presents unique challenges and adaptations for the people who call these regions home.
- In this discussion, we will explore the intricacies of life in two types of deserts: hot deserts and cold deserts.
The Hot Desert – Sahara
Location of Sahara
- The Sahara Desert is a vast expanse in North Africa, covering approximately 8.54 million square kilometers.
- It stretches across eleven countries, namely Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Sudan, Tunisia, and Western Sahara.
Geographical Features
- The Sahara is not merely an endless sea of sand. It comprises gravel plains and elevated plateaus, with some rocky surfaces rising to heights of over 2500 meters in places.
Climate
- The climate in the Sahara is scorching hot and remarkably dry.
- Rainfall is meager, and the region experiences a short rainy season.
- During the day, temperatures can reach an astonishing 50°C, heating up the sand and rocks, which then radiate heat into the surroundings.
- Nights can be freezing cold, with temperatures plummeting to nearly zero degrees.
Flora and Fauna
- While we might envision deserts as barren places, the Sahara surprises with some hardy vegetation.
- Cactus, date palms, and acacia trees manage to thrive in certain areas.
- There are pockets of green oasis with lush date palms.
- Animal life includes camels, hyenas, jackals, foxes, scorpions, and a variety of bird species.
People and Activities
- Two distinctive groups, the Bedouins and Tuaregs, are nomadic tribes that rear livestock such as goats, sheep, camels, and horses.
- These animals provide essential resources, including milk, hides for making leather products, and even hair for crafting mats, carpets, clothes, and blankets.
- Bedouins and Tuaregs often wear heavy robes to protect themselves from dust storms and the scorching desert winds.
- Near the oases, where water is available, there are settled populations engaged in agriculture.
- Crops such as rice, wheat, barley, and beans are cultivated, and Egypt’s world-famous cotton thrives in the Nile Valley.
- The Sahara also holds valuable natural resources, notably oil.
- Modernization, accompanied by the discovery of oil and other minerals like iron, phosphorus, manganese, and uranium, is transforming the Sahara and impacting the lives of its inhabitants.
Changes in Sahara
- The cultural landscape of the Sahara is evolving rapidly.
- Gleaming office buildings now rise above ancient mosques, and modern superhighways intersect the paths once trodden by camels.
- Trucks are supplanting camels in the salt trade, and even nomadic herdsmen are transitioning to city life, finding jobs in oil and gas operations.
The Cold Desert – Ladakh
Location of Ladakh
- Ladakh, situated in the northernmost part of India within the Great Himalayas, is a cold desert.
- Its unique location places it within the union territory of Jammu and Kashmir.
Geography and Climate
- Ladakh is enclosed by the formidable Karakoram Range to the north and the Zanskar Mountains to the south.
- Altitude within the region varies significantly, from around 3000 meters in places like Kargil to over 8000 meters in the Karakoram.
- The climate in Ladakh is characterized by extreme cold and dry conditions.
- Due to its high altitude, the air is thin, making the sun’s heat intense.
- In summer, daytime temperatures hover just above zero degrees, while nights can dip well below -30°C.
- Winters are even harsher, with temperatures frequently remaining below -40°C.
Flora and Fauna
- The scarcity of moisture in Ladakh results in sparse vegetation, with only pockets of grasses and shrubs.
- However, during the summer, fruit trees like apples, apricots, and walnuts bloom in the region.
- Birdlife is diverse and includes species like robins, redstarts, Tibetan snowcock, ravens, and hoopoes.
- Animal life consists of wild goats, wild sheep, yaks, and unique regional dog breeds.
- These animals are crucial for providing milk, meat, and hides.
- Yak’s milk, for example, is used to produce cheese and butter, contributing to the local diet.
People of Ladakh
- Ladakh’s inhabitants are primarily either Muslims or Buddhists.
- The region boasts numerous Buddhist monasteries, known as ‘gompas.’
- Some of the most well-known monasteries include Hemis, Thiksey, Shey, and Lamayuru.
- In the summer season, people are occupied with the cultivation of barley, potatoes, peas, beans, and turnips.
- However, the harsh winter months dictate a different lifestyle, with residents engaging in various festivities and ceremonies.
- Ladakhi women, in particular, play a crucial role not only in household and agricultural activities but also in managing small businesses and shops.
- In terms of connectivity, Leh, the capital of Ladakh, is well linked to the rest of India via both road and air travel.
- The National Highway 1A connects Leh to the Kashmir Valley, passing through the challenging Zoji La Pass.
Tourism and Conservation
- Ladakh attracts numerous tourists due to its stunning monasteries, the lure of treks through meadows and glaciers, opportunities to witness local ceremonies and festivities, and its unique culture.
- However, it is essential to balance the influx of tourists with conservation efforts in this fragile environment.
- As Ladakh modernizes and adapts, the region’s cultural landscape is also undergoing significant changes.
Conclusion
- In conclusion, life in deserts presents a myriad of challenges, but it also showcases human adaptability and the remarkable ability of communities to thrive in extreme conditions.
- From the hot deserts of the Sahara to the cold deserts of Ladakh, these unique environments have shaped the cultures, livelihoods, and landscapes of the people who call them home.
Important Places and Definitions
Important Definitions for Life in the Deserts Class 7 Geography Chapter 7 Notes for CBSE and UPSC.
- Deserts: Arid regions characterized by extremely high or low temperatures and has scarce vegetation. Deserts are defined by their challenging climate conditions, including limited precipitation and a wide range of temperatures.
- Oases: Depressions in deserts where underground water reaches the surface, forming fertile areas. Oases are vital in desert regions, providing water and supporting agriculture.
- Gompas: Buddhist monasteries commonly found in the Ladakh region. These monasteries are significant cultural and religious centers.
- Zoji La Pass: A high mountain pass in the Himalayas that connects Ladakh to the Kashmir Valley. This pass is essential for transportation between the two regions and is known for its challenging terrain and weather conditions.
- Bedouins: Nomadic tribes in the Sahara and other desert regions, known for their traditional way of life and expertise in desert survival.
- Tuaregs: Another nomadic tribal group, primarily found in the Sahara. They have a distinct culture and are known for their blue clothing and turbans.
- Altitude: The height above sea level. In Ladakh, altitude varies significantly, affecting the climate and the ability to adapt to high-altitude conditions.
- Karakoram Range: A mountain range located in northern Pakistan, India, and China. It is one of the Greater Ranges of Asia and is home to some of the world’s highest peaks, including K2.
- Zanskar Mountains: A mountain range in the Ladakh region of India, known for its rugged and dramatic terrain.
- Precipitation: Any form of water—liquid or solid—that falls from clouds and reaches the ground. In deserts, precipitation is typically very limited.
- Cactus: A type of succulent plant adapted to arid conditions, often found in desert regions.
- Acacia: A type of tree or shrub known for its adaptability to dry climates and is found in some desert areas.
- Camels: Large, humpbacked mammals often referred to as the “ships of the desert” due to their ability to carry heavy loads and survive in arid environments.
- Nomadic: Refers to groups or communities that do not have permanent settlements and move from place to place in search of resources.
- Oil: A valuable natural resource extracted from the Earth, often found in desert regions and used for various purposes, including energy production.
- Iron: A metallic element and valuable mineral resource used in manufacturing and construction.
- Phosphorus: A chemical element and essential nutrient often used in fertilizers.
- Manganese: A metallic element and important industrial mineral used in steel production and other applications.
- Uranium: A radioactive element used in nuclear energy and various applications.
- Buddhist Monasteries: Religious and cultural institutions in Ladakh where Buddhist monks live, worship, and study.
- Kashmir Valley: A fertile region in the northern part of the Indian subcontinent, known for its scenic beauty and cultural significance.
Assessment and Review: FAQs and MCQs.
Important Questions for Life in the Deserts Class 7 Geography Chapter 7 Notes for CBSE and UPSC.
FAQs (Frequently Asked Questions)
Q1: What are deserts, and what characterizes them?
Deserts are arid regions known for their extreme temperatures and scarce vegetation. They are characterized by minimal precipitation, either in the form of high temperatures in hot deserts or harsh cold in cold deserts. In hot deserts, daytime temperatures can reach as high as 50°C, while cold deserts experience freezing conditions, often dropping below -40°C.
Q2: Where is the Sahara Desert located, and how vast is it?
The Sahara Desert is situated in North Africa, covering approximately 8.54 million square kilometers. It touches eleven countries, including Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Sudan, Tunisia, and Western Sahara.
Q3: What types of geographical features are found in the Sahara?
The Sahara isn’t solely composed of endless sand dunes. It also features gravel plains and elevated plateaus with rocky surfaces rising to over 2500 meters in certain areas.
Q4: Can you describe the climate in the Sahara Desert?
The Sahara has a scorching hot and parched climate. Rainfall is minimal, and there’s a short rainy season. Daytime temperatures can soar to 50°C, heating up the sand and rocks. Nights can be freezing cold, with temperatures nearing zero degrees.
Q5: What kind of flora and fauna can be found in the Sahara?
While deserts may seem devoid of life, the Sahara surprises with some vegetation, including cactus, date palms, and acacia trees. Oasis areas host lush date palms. Animal life includes camels, hyenas, jackals, foxes, and various bird species.
Q6: Who inhabits the Sahara Desert, and how do they adapt?
Groups like the Bedouins and Tuaregs are nomadic tribes rearing livestock such as goats, sheep, camels, and horses. These animals provide milk, hides, and hair, which are essential for their lifestyle. They wear heavy robes for protection against the elements.
Q7: What are the changes happening in the Sahara?
The Sahara is undergoing rapid changes with modernization. Office buildings, superhighways, and trucks are becoming common. Nomadic herdsmen are transitioning to city life, and the discovery of oil and minerals like iron, phosphorus, manganese, and uranium is transforming the region.
Q8: Where is Ladakh located, and what are its geographical features?
Ladakh, a cold desert, is located in the northernmost part of India, enclosed by the Karakoram Range to the north and the Zanskar Mountains to the south. It varies in altitude, with some areas exceeding 8000 meters in height.
Q9: What is the climate in Ladakh?
Ladakh’s climate is extremely cold and dry. Summer daytime temperatures are just above freezing, while nights can be well below -30°C. Winters are even harsher, with temperatures often remaining below -40°C.
Q10: How are the people of Ladakh adapting to their environment?
People in Ladakh are primarily Muslims or Buddhists. They cultivate barley, potatoes, peas, beans, and turnips in summer, but harsh winters mean they engage in festivities and ceremonies. Women play a crucial role in managing households, agricultural activities, and small businesses.
Multiple Choice Questions (MCQs)
Important MCQs for Life in the Deserts Class 7 Geography Chapter 7 Notes for CBSE and UPSC.
Q1: What characterizes deserts?
- A. High precipitation
- B. Extreme temperatures and minimal vegetation
- C. Dense forests
- D. Frequent rainstorms
Answer: B. Extreme temperatures and minimal vegetation
Q2: Which countries does the Sahara Desert touch?
- A. Three countries
- B. Eight countries
- C. Ten countries
- D. Eleven countries
Answer: D. Eleven countries
Q3: What types of geographical features are found in the Sahara?
- A. Only sand dunes
- B. Gravel plains and elevated plateaus
- C. Rocky mountains
- D. Dense forests
Answer: B. Gravel plains and elevated plateaus
Q4: How hot can daytime temperatures in the Sahara get?
- A. 30°C
- B. 40°C
- C. 50°C
- D. 60°C
Answer: C. 50°C
Q5: What kind of vegetation is found in the Sahara?
- A. Dense forests
- B. Pine trees
- C. Cactus, date palms, and acacia
- D. Grasslands
Answer: C. Cactus, date palms, and acacia
Q6: Who are the Bedouins and Tuaregs?
- A. Scientists
- B. Nomadic tribes
- C. City dwellers
- D. Farmers
Answer: B. Nomadic tribes
Q7: What are some of the natural resources found in the Sahara?
- A. Freshwater lakes
- B. Oil and minerals like iron, phosphorus, and uranium
- C. Dense forests
- D. Precious gemstones
Answer: B. Oil and minerals like iron, phosphorus, and uranium
Q8: Where is Ladakh located?
- A. In South America
- B. In Europe
- C. In North Africa
- D. In the northernmost part of India
Answer: D. In the northernmost part of India
Q9: How cold can winter temperatures in Ladakh be?
- A. -10°C
- B. -20°C
- C. -30°C
- D. -40°C
Answer: D. -40°C
Q10: What roles do women play in Ladakh’s society?
- A. None
- B. Only in festivals
- C. Managing households, agriculture, and small businesses
- D. Religious leaders
Answer: C. Managing households, agriculture, and small businesses
This was the end of Life in the Deserts Class 7 Geography Chapter 7 Notes for CBSE and UPSC.
For more information, refer to NCERT SOLUTIONS, NCERT NOTES, and NCERT BOOKS .
