✅ CHAPTER 3 — LANDFORMS AND LIFE
🔶 1. Introduction to Landforms
Earth’s surface is not the same everywhere. It has different shapes such as mountains, plateaus and plains. These shapes are called landforms.
Landforms affect:
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Climate
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Plants & animals
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Human life
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Occupations
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Culture and traditions
Humans have adapted to all landforms, but not equally. More people live in plains than in mountains or plateaus.
🔶 2. Meaning of Landforms (Definition)
Definition: Landform
A landform is a natural physical feature on the Earth’s surface, formed over millions of years.
Examples:
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Mountains
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Hills
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Plateaus
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Plains
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Valleys
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Deserts
Three major landforms studied in this chapter are:
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Mountains
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Plateaus
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Plains
🔶 3. Mountains
Definition: Mountain
A mountain is a landform that rises high above the surrounding area, with steep slopes and a narrow peak.
Features of Mountains
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High altitude
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Steep slopes
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Rugged terrain
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Often snow-covered tops
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Cooler climate
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Source of rivers
Mountain Ranges Mentioned
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Himalayas (Asia)
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Alps (Europe)
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Andes (South America)
Examples of Famous Mountains
| Mountain | Location |
|---|---|
| Mount Everest | Nepal–China |
| Kanchenjunga | India–Nepal |
| Aconcagua | Andes, South America |
| Kilimanjaro | East Africa |
| Mont Blanc | Europe |
| Anamudi | South India |
🔶 4. Mountain Environment
Vegetation
Mountain forests are called montane forests.
Definition: Montane Forest
Forests found in hilly or mountainous areas.
Common trees:
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Pine
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Deodar
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Spruce
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Fir
Animals Found in Mountains
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Golden eagle
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Snow leopard
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Yak
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Grey fox
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Ibex
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Himalayan tahr
Climate in Mountains
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Cold
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Heavy snowfall
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Thin air
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Steep slopes
🔶 5. Life in Mountains
Occupations
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Terrace farming
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Herding
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Tourism
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Handicrafts
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Pilgrimage-related work
Definition: Terrace Farming
Cutting steps on mountain slopes to grow crops.
Challenges
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Landslides
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Avalanches
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Cloudbursts
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Flash floods
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Cold climate
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Poor transportation
Definition: Landslide
Sudden sliding of rocks/soil down a mountain.
Definition: Avalanche
Fall of snow and ice from a mountain.
🔶 6. Plateaus
Definition: Plateau
A plateau is a flat-topped elevated landform that rises sharply from surrounding lands.
Examples
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Tibetan Plateau – highest/ largest
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Deccan Plateau – volcanic, rich in minerals
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East African Plateau – gold & diamond mining
Features
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Flat top
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Rich in minerals
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Many waterfalls
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Rocky soil (less farming)
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Height varies
Examples of Waterfalls
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Victoria Falls
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Jog Falls
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Hundru Falls
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Nohkalikai Falls (340 m, Meghalaya)
🔶 7. Plains
Definition: Plain
A large flat area of land with little height above sea level.
How Plains Form
Plains form from river sediments brought from mountains.
Definition: Sediments
Small rocks, sand, and silt deposited by rivers.
Ganga Plains
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One of the most populated areas
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Rich fertile soil
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Supports agriculture
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Crops: rice, wheat, maize, cotton, jute
River-based life includes:
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Fishing
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Agriculture
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River transport
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Festivals and rituals at confluences
Definition: Confluence
Meeting point of two or more rivers.
🔶 8. Deserts
Definition: Desert
A dry landform with very little rainfall.
Types:
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Hot deserts (Sahara, Thar)
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Cold deserts (Gobi)
Features:
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Scarce vegetation
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Unique flora and fauna
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Harsh living conditions
🔶 9. Human Adaptation & Sangam Age Tiṇai System
Ancient Tamil Sangam literature classified landscapes into:
| Tiṇai | Landscape | Occupation |
|---|---|---|
| Kuriñji | Mountains | Hunting |
| Mullai | Forests | Cattle-rearing |
| Marudam | Plains | Farming |
| Neydal | Coast | Fishing |
| Pālai | Desert | Trading, fighting |
🔶 10. Summary
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Landforms affect climate, life and culture
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Three main landforms: mountains, plateaus, plains
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Mountains: high, steep; tourism & farming on terraces
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Plateaus: flat-topped, rich in minerals
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Plains: most populated, fertile
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Deserts: dry, extreme climate
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Human life adapts differently to each landform
NOW THE QUESTION BANK SECTION BEGINS
✅ 20 MULTIPLE-CHOICE QUESTIONS (MCQs) — WITH ANSWERS
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The highest mountain in the world is:
A. Kilimanjaro
B. Everest
C. Aconcagua
D. Anamudi
Ans: B -
A flat-topped elevated landform is called:
A. Mountain
B. Plateau
C. Plain
D. Valley
Ans: B -
Terrace farming is practiced in:
A. Plains
B. Plateaus
C. Mountains
D. Deserts
Ans: C -
Nohkalikai Falls is located in:
A. Rajasthan
B. Meghalaya
C. Sikkim
D. Gujarat
Ans: B -
The Deccan Plateau was formed by:
A. Earthquakes
B. Volcanic activity
C. Floods
D. Glaciers
Ans: B -
A meeting of two rivers is called:
A. Delta
B. Waterfall
C. Confluence
D. Source
Ans: C -
Ganga Plain is famous for:
A. Fishing
B. Farming
C. Mining
D. Shipbuilding
Ans: B -
Which landform is most populated?
A. Mountains
B. Plateaus
C. Plains
D. Deserts
Ans: C -
Montane forests are found in:
A. Mountains
B. Plateaus
C. Plains
D. Oceans
Ans: A -
Which is a cold desert?
A. Sahara
B. Thar
C. Gobi
D. Atacama
Ans: C -
Mountains with sharp peaks are:
A. Old
B. Young
C. Volcanic
D. Rocky
Ans: B -
Tibetan Plateau is called the:
A. Roof of the World
B. Garden of the World
C. Bed of the World
D. Mountain King
Ans: A -
Sediments make plains:
A. Rocky
B. Fertile
C. Sandy
D. Cold
Ans: B -
Snow leopard is found in:
A. Plains
B. Plateaus
C. Mountains
D. Coast
Ans: C -
Which is NOT a challenge in mountains?
A. Avalanche
B. Landslide
C. Cloudburst
D. Smooth transport
Ans: D -
The largest plateau is:
A. Deccan
B. East African
C. Tibetan
D. Brazilian
Ans: C -
Plains are usually less than ___ metres above sea level.
A. 500
B. 700
C. 300
D. 100
Ans: C -
Victoria Falls is found on:
A. Ganga
B. Zambezi
C. Amazon
D. Nile
Ans: B -
Which landform has mining as a major occupation?
A. Mountains
B. Plateaus
C. Plains
D. Deserts
Ans: B -
Which region of India has terrace farming?
A. Punjab
B. Rajasthan
C. Sikkim
D. Gujarat
Ans: C
✅ 20 VERY SHORT QUESTION ANSWERS
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Define landform.
A natural physical feature of the Earth’s surface. -
Name the three major landforms.
Mountains, plateaus, plains. -
What is a mountain?
A high landform with steep slopes and a narrow peak. -
What is a plateau?
A flat-topped elevated landform. -
What is a plain?
A large flat land area with low height. -
What feeds rivers in mountains?
Melting snow. -
What is terrace farming?
Farming on steps cut into mountain slopes. -
Which is the largest plateau?
Tibetan Plateau. -
Where is Anamudi located?
Kerala, India. -
What are sediments?
Rock, sand, and silt deposited by rivers. -
What is a confluence?
Meeting point of rivers. -
What is a valley?
Low land between mountains. -
Name one montane forest tree.
Pine. -
Name a cold desert.
Gobi Desert. -
Name a hot desert.
Sahara Desert. -
What is a landslide?
Sliding of rocks/soil down a slope. -
Where is Nohkalikai Falls?
Meghalaya. -
What is altitude?
Height above sea level. -
What is precipitation?
Water falling from clouds (rain/snow). -
Which plain is most populated in India?
Ganga Plain.
✅ 20 SHORT QUESTION ANSWERS (3–4 lines each)
1. Describe the three major landforms.
The three major landforms are mountains, plateaus, and plains.
Mountains are high with steep slopes, plateaus are elevated flat-topped regions, and plains are low-lying flat areas. Each has a different climate, vegetation, and pattern of life.
2. Why are mountains important for rivers?
Mountains store snow, which melts in summer to supply water to rivers.
Many major rivers of the world, including the Ganga, Yamuna, and Brahmaputra, originate in mountain ranges.
3. Explain why mountains are sparsely populated.
Mountains have harsh climates, steep slopes, and poor transport facilities.
Farming is difficult, and natural disasters like landslides and avalanches make life challenging.
4. What is terrace farming and why is it done?
Terrace farming involves cutting steps on mountain slopes to create flat areas for cultivation.
It prevents soil erosion and allows farming on steep surfaces.
5. What is a plateau? Give two examples.
A plateau is a raised flat-topped landform.
Examples include the Tibetan Plateau and Deccan Plateau.
6. Why are plateaus rich in minerals?
Plateaus are often formed by volcanic activity or uplift of Earth’s crust.
These processes bring minerals close to the surface, making mining common.
7. What makes the Tibetan Plateau unique?
It is the largest and highest plateau in the world.
Its average height is about 4,500 metres, so it is called the Roof of the World.
8. Why is agriculture limited in plateaus?
The soil is often rocky and less fertile.
Flat land is limited, and water availability may be low.
9. What are plains and how do they form?
Plains are large flat areas formed by river sediments.
Rivers deposit silt, sand, and clay from mountains, making plains fertile.
10. Why are plains densely populated?
They have fertile soil, good farming conditions, easy transport, and a moderate climate.
These factors support large populations and economic activities.
11. Describe the Ganga Plain.
It is one of the world’s most fertile regions and home to over 40 crore people.
Crops like rice, wheat, and jute are grown here, supported by irrigation and rivers.
12. How do rivers support life in plains?
They provide water for farming, drinking, and transportation.
They also support fishing and host many cultural activities.
13. What problems threaten the Ganga Plain today?
Groundwater depletion, overpopulation, and pollution are major concerns.
These threaten agriculture and the ecosystem.
14. What are deserts? Give examples.
Deserts are dry regions with very little rainfall.
Examples: Sahara (hot) and Gobi (cold).
15. How have people adapted to desert life?
They use camels for transport, live in mud or cloth houses, store water carefully, and follow traditional lifestyles adapted to dry climates.
16. Describe life in mountain regions.
People live in valleys or terraces, practice herding, farming, tourism, and handicrafts.
Transport is difficult and weather is harsh.
17. What is meant by a river confluence?
A confluence is the meeting point of two or more rivers.
Many such places in India, like Prayagraj, hold religious importance.
18. What challenges do mountain people face?
Natural disasters like landslides, heavy snowfall, avalanches, and cloudbursts.
Transport and communication are also difficult.
19. Why is the Deccan Plateau important?
It is rich in minerals like iron, coal, and manganese.
It has black soil suitable for cotton cultivation.
20. How do landforms influence culture?
Different landforms influence occupations, food habits, settlements, clothing, and traditions.
Ancient Tamil Sangam literature shows landscapes linked with human emotions and lifestyles.
✅ 10 LONG QUESTION ANSWERS (8–10 lines each)
1. Explain in detail the characteristics, climate, vegetation, and life in mountains.
Mountains are high landforms with steep slopes and narrow peaks. The climate is cold, and higher regions remain snow-covered throughout the year. Vegetation includes montane forests with pines, firs, and deodars. Animals like snow leopards, yaks, and golden eagles live here. Terrace farming is common because flat land is scarce. Tourism, herding, and handicrafts are major occupations. Mountains also face challenges like landslides, avalanches, and cloudbursts, making life difficult.
2. Describe the formation, features, and importance of plateaus.
Plateaus are flat-topped elevated regions formed by volcanic eruptions or uplift of Earth’s crust. They have steep sides and varying heights. Many plateaus, like the Deccan Plateau, contain rich mineral deposits such as iron, coal, and manganese. Because their soil is often rocky, agriculture is limited, though lava plateaus have fertile black soil. Waterfalls like Jog Falls and Hundru Falls are common. Mining and tourism are important economic activities.
3. Discuss the formation of plains and why they support dense populations.
Plains are formed by river sediments deposited over years. They have flat surfaces and fertile soils, making agriculture easy. The Ganga Plain supports crops like rice, wheat, and jute. Transport is easy due to flat land, promoting trade and settlement. Mild climate, water availability, and good roads make plains ideal for living. Therefore, most of the world’s population resides in plains.
4. Explain terrace farming, its need, and advantages in mountainous regions.
Terrace farming involves cutting steps into mountain slopes. This is necessary because steep slopes are unsuitable for flat-field farming. Terraces reduce soil erosion, store water, and make irrigation easier. They allow farmers to grow crops like rice, maize, and potatoes. Terrace farming also prevents landslides by stabilising soil. It is an adaptation to difficult terrain.
5. Describe the challenges faced by people living in mountain regions.
Mountains face natural disasters such as landslides, avalanches, cloudbursts, and flash floods. The climate is cold and harsh, with heavy snowfall blocking roads. Transport and communication are difficult due to steep slopes. Farming is limited to valleys or terraces. Medical and educational facilities may be limited. Despite these challenges, people live there due to tourism, natural beauty, and cultural heritage.
6. Explain the economic importance of plateaus with examples.
Plateaus are known as “storehouses of minerals.” The Deccan Plateau has iron, coal, and manganese; the East African Plateau is famous for gold and diamonds. Mining provides jobs and supports industries. Plateaus also attract tourists because of waterfalls like Victoria Falls and Jog Falls. Some plateaus have fertile soil useful for cotton farming. Thus, plateaus contribute significantly to the economy.
7. Discuss the lifestyle, occupations, and culture of people living in plains.
People in plains mostly practice agriculture due to fertile soil and abundant water. Crops like wheat, rice, cotton, and jute are grown. Fishing and river transport also support livelihoods. The moderate climate and good roads support large populations. Many cities and ancient civilisations developed in river plains. Cultural activities, festivals, and trade flourish in these regions.
8. Describe the Ganga Plain and why it is important for India.
The Ganga Plain is a vast fertile plain extending across North India. It supports more than 40 crore people. Agriculture is the main occupation, producing rice, wheat, jute, and sugarcane. Rivers like Ganga and Yamuna provide water for irrigation and transport. The region also faces challenges like groundwater depletion and pollution. The plain has great cultural, religious, and economic importance.
9. Explain the differences in life in mountains, plateaus, and plains.
Mountain life involves cold climate, terrace farming, tourism, and herding. Plateaus have mining, waterfalls, and limited farming. Plains support dense populations, agriculture, transport, and large settlements. While mountains offer scenic beauty and challenges, plains offer economic opportunities. Plateaus lie between the two in terms of resources and lifestyle.
10. Describe deserts and how humans adapt to life there.
Deserts are dry regions with very little rainfall and extreme temperatures. They can be hot, like the Sahara, or cold, like the Gobi. Vegetation is sparse, and water is scarce. People adapt by using camels for transport, wearing loose clothes, storing water, and building special houses. Desert communities have rich cultural traditions like folk songs and festivals. Despite harsh conditions, humans survive through resilience and adaptation.
✅ 6 CASE STUDIES WITH QUESTIONS AND ANSWERS
CASE STUDY 1: Floods in the Ganga Plain
Heavy monsoon rains caused the Ganga to overflow. Many villages were flooded, but the fertile soil remained rich after water receded.
Q1. Why did the floods occur?
Due to heavy rainfall in the plains and rivers overflowing.
Q2. What benefit do floods bring to soil?
Floodwaters deposit fertile sediments on plain soil.
Q3. Why is the Ganga Plain suitable for farming?
It has rich alluvial soil, ample water, and flat land.
CASE STUDY 2: Landslides in Himachal
A group of tourists were stuck due to a landslide blocking roads in the mountains.
Q1. What caused the landslide?
Steep slopes and heavy rainfall loosened soil and rocks.
Q2. Why are landslides common in mountains?
Mountains have unstable slopes and receive heavy rainfall or snowfall.
Q3. What precaution should travellers take?
Avoid travel during heavy rain and follow safety advisories.
CASE STUDY 3: Mining in the Deccan Plateau
Chhota Nagpur Plateau is rich in coal and iron ore, leading to mining jobs.
Q1. Why is mining common here?
Because plateaus have rich mineral deposits.
Q2. What benefit does mining give the region?
Employment and industrial development.
Q3. What is one environmental effect of mining?
Loss of forests or land degradation.
CASE STUDY 4: Farming in the Mountains
Farmers in Uttarakhand grow crops on terraces due to steep slopes.
Q1. Why is terrace farming used?
Steep surfaces make flat farming impossible.
Q2. Name crops grown using terraces.
Rice, maize, potatoes.
Q3. How does terrace farming prevent soil loss?
It slows down water flow and reduces erosion.
CASE STUDY 5: Waterfall Tourism
Jog Falls attracts many tourists each year.
Q1. Why do waterfalls attract tourists?
Because of natural beauty and scenic surroundings.
Q2. What landform do waterfalls often occur on?
Plateaus.
Q3. How can tourism harm nature?
Littering and crowding damage natural habitats.
CASE STUDY 6: Desert Living in Rajasthan
People in the Thar Desert rely on camels for transport and live in mud houses.
Q1. Why are camels suited for deserts?
They need less water and can travel long distances on sand.
Q2. Why are mud houses useful in deserts?
They keep interiors cool in extreme heat.
Q3. What challenges do desert people face?
Water scarcity, heat, and limited vegetation.
✅ 10 ASSERTION–REASON QUESTIONS WITH ANSWERS
**1. A: Mountains have steep slopes.
R: They are formed by deposition of river sediments.**
Correct answer: C – A true, R false
**2. A: Plateaus contain many minerals.
R: They are often formed by volcanic activity.**
Correct answer: A – Both true, R explains A
**3. A: Plains support dense populations.
R: Their soil is fertile and transport is easy.**
Correct answer: A – Both true, R explains A
**4. A: Terraces prevent soil erosion.
R: They reduce the speed of water running downhill.**
Correct answer: A
**5. A: The Ganga Plain faces pollution problems.
R: Many people, industries, and farms depend on the river.**
Correct answer: A
**6. A: Deserts have very little vegetation.
R: Rainfall is extremely low in deserts.**
Correct answer: A
**7. A: Mountains attract many tourists.
R: Mountains have scenic beauty and adventure activities.**
Correct answer: A
**8. A: Waterfalls form mainly in plains.
R: Waterfalls occur when rivers cut through hard rocks.**
Correct answer: C – A false, R true
**9. A: The Tibetan Plateau is called “Roof of the World.”
R: It has an average height of 4,500 metres.**
Correct answer: A
**10. A: Plains have moderate climate.
R: They are close to sea level with gentle slopes.**
Correct answer: B – Both true but R does not fully explain A