Landforms And Life Important Notes - Class 6 Social Studies | FREE PDF Download

Imagine an exciting road trip—starting in the rugged hills of Chhota Nagpur, passing through the fertile plains of Prayagraj, and ending in the scenic town of Almora. On this journey, you’ll witness the fascinating variety of landscapes, each unique and awe-inspiring. These different types of land are called landforms.Landforms

A landform is a physical feature on the surface of our planet Earth. Landforms take shape over millions of years and have a significant connection with the environment and life. They can broadly be divided into three categories - mountains, plateaus, and plains. These landforms have different climates and support a variety of flora and fauna. Throughout history, the lives and activities of people have been greatly influenced by the type of landform they have inhabited.

Mountains

• Mountains are landforms that are significantly higher than the surrounding landscape. They are characterised by a broad base, steep slopes, and a narrow summit. Depending on their height, some mountains are covered with snow. 
• In the summer, the snow on lower mountains melts, turning into water that feeds rivers. On higher mountains, the snow might never melt, keeping them covered in snow all year long.
• Hills are like mountains but are shorter, have gentler slopes, and rounded tops. Most mountains in the world are part of mountain ranges, which are long chains of mountains. Examples include the Himalayas in Asia, the Alps in Europe, and the Andes in South America. Some of these ranges stretch for thousands of kilometers.
• Mount Everest, located between Tibet (China) and Nepal, and Kanchenjunga, between Nepal and the Indian state of Sikkim, are the two highest peaks in the Himalayas. Mount Everest
• In South America, Mount Aconcagua is the highest peak of the Andes. Mount Kilimanjaro in eastern Africa is a tall, isolated mountain not part of any range. 
  

  Andes 
• Mont Blanc is the highest mountain in the Alps in Western Europe. Anamudi, also known as 'Anai Peak,' is the highest mountain in South India, located in Kerala.

• Mountains with tall, sharp peaks like the Himalayas are considered 'young,' meaning they formed recently in Earth's history, although that still means millions of years ago! Older mountains, like the Aravalli Range, have shorter and more rounded peaks because they have been worn down by erosion over time. 
• Some mountains, like the Himalayas, are still growing in height due to ongoing natural processes.

Mountain Environment

• Montane forests: Mountain slopes are often covered with a special type of forest called montane forest, where conifer trees such as pines, firs, spruce, and deodar are common. 
• Tree shape and leaves: Many conifers are tall and cone-shaped with thin, pointed leaves (needles). These shapes help them cope with cooler mountain climates and heavy snow.
• Vegetation changes with height: As you go higher, trees become fewer and are replaced by grasses, mosses and lichen.
• Animals of the mountains: Mountains support many specially adapted animals. Examples include the snow leopard, ibex, Himalayan tahr, yak, mountain hare, golden eagle, and peregrine falcon. These animals live in forests, grasslands, near rivers and lakes, and in caves.
• Adaptation: Mountain plants and animals have adaptations to survive steep slopes, thin soils, low temperatures and reduced oxygen at high altitudes.

The Himalayas in Ancient Poetry

• These lines are from a poem by Kalidasa, an ancient Indian poet who lived more than 1,500 years ago. In his poem Kumarasambhava, Kalidasa praises the Himalayas.
• The poem describes the Himalayas as a mighty mountain range that stretches from the west to the east, almost like a living god that covers the Earth. 
• The wind from the Himalayas brings mist from the Ganga, makes the deodar trees shake and causes the peacocks to display their feathers. The cool breeze refreshes the people of the mountains.

Let's Revise

Q: What kind of trees are found in montane forests?

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Ans: Montane forests have tall, cone-shaped trees like pines, firs, spruce, and deodar.

Q: Name two animals that live in mountain environments.

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Ans: Animals like the snow leopard and golden eagle live in mountain environments.

Life in the Mountains

• Farming and terrain: The mountain terrain is rough, and slopes are steep, so regular farming is usually possible only in some valleys.
• Terrace farming: People practise terrace farming by cutting steps into slopes so crops can be grown on levelled plots.
• Herding and livelihood: In many mountain areas, herding animals is more common than farming. People depend on animals, forests and small-scale farming for their livelihoods.
• Tourism: Tourism is a major source of income in the mountains because people are attracted to the fresh air and beautiful scenery. Activities include skiing, hiking, mountaineering and paragliding. However, too many visitors can harm the delicate mountain environment, making it important to find a balance.
• Religion and pilgrimage: Mountains have been places of religious importance for centuries and many pilgrimages occur in mountainous regions.

Inspiring Mountain Climbers

1. Bachendri Pal: 

• A pioneer among Indian women climbers. Bachendri Pal started climbing mountains when she was young and led many women's climbing expeditions. 
• She became the first Indian woman to climb Mount Everest in 1984. She was awarded the Padma Shri in 1984 and the Padma Bhushan in 2019.

2. Arunima Sinha: 

• After losing a leg in an accident at age 31, with Bachendari Pal's support and training she was able to climb Mount Everest in 2013.
• She later climbed the highest peaks on every continent, including Mount Vinson in Antarctica, and was awarded the Padma Shri in 2015.

Don't Miss Out

• Many communities treat mountains as sacred and worship them. Mount Everest, the world's highest mountain at 8,849 metres, is called 'Chomolungma' by Tibetans (meaning 'Mother Goddess of the World') and 'Sagarmatha' by Nepalis (meaning 'Goddess of the Sky').
• Mount Kailash in Tibet is sacred to followers of Hinduism, Buddhism, Jainism and Bon and is an important pilgrimage site.
• Respect for mountains as holy places is common in India and many other parts of the world.

Plateaus

• A plateau is a landform that stands higher than the land around it and has a flat top. Some of its sides are steep.
• Age of plateaus: Plateaus can be old or young in Earth's history.
• Examples: The Tibetan Plateau is the largest and highest plateau in the world. The Deccan Plateau in India is another well-known example.
• Minerals and mining: Plateaus are often rich in minerals. For example, the East African Plateau is known for gold and diamonds, and the Chhota Nagpur Plateau in India has large reserves of iron, coal and manganese.
• Soils and farming: Many plateaus have rocky soils that make farming difficult. Lava plateaus formed by volcanic activity can have rich black soils suitable for agriculture.
• Waterfalls: Plateaus are famous for spectacular waterfalls. Examples are Victoria Falls in southern Africa, Hundru Falls on the Subarnarekha River in the Chhota Nagpur Plateau, Jog Falls on the Sharavati River in the Western Ghats, and Nohkalikai Falls in Meghalaya which drops about 340 metres.

The Nohkalikai Falls emerging from the Cherrapunji Plateau

The Tibetan and Deccan Plateaus

• The Tibetan Plateau has an average height of about 4,500 metres and is often called the 'Roof of the World.'
• It stretches roughly 2,500 kilometres from east to west - a distance comparable to that between Chandigarh and Kanyakumari in India.
• The Deccan Plateau in central and southern India is one of the oldest plateaus and was formed by volcanic activity millions of years ago.

Plains

• Plains are large areas of flat or gently rolling land without major hills or deep valleys. Most plains lie less than 300 metres above sea level.
• Floodplains: A special type of plain is the floodplain. Floodplains are formed where rivers flowing down from mountains deposit sediments - particles of rock, sand and silt - on the lower land. These sediments make the soil very fertile.
• Agriculture: Fertile soils of plains make them ideal for growing many crops, so agriculture is a major activity on the plains. Plains also support diverse plant and animal life.

Life in the Plains

• Civilisation and settlement: Many of the first civilisations developed on fertile plains near rivers. Even today, plains support large populations because they are good for farming and other activities.
• Ganga plain: In India roughly 400 million people live in the Ganga plain (Gangetic plain). People there mainly practise farming and river fishing.
• Crops: Farmers grow food crops such as rice, wheat, maize, barley and millets, and fibre crops such as cotton, jute and hemp.  When the rivers deposit these sediments, the soil becomes very fertile, making it perfect for growing all kinds of crops. Because of this, agriculture is a major activity in plains. Additionally, plains are home to a wide variety of plants and animals.
• Environmental concerns: While irrigation has helped increase crop production, it has also caused a decrease in groundwater levels, which is a concern for the future. The Ganga plains also face challenges like high population and pollution.
• Cultural importance of rivers: Rivers are often seen as sacred. In India, many festivals and ceremonies are held at these locations. Because plains have a gentle slope, rivers are easy to navigate, which supports economic activities.  Rivers also made travel and trade easier because many stretches are navigable.

A Satellite View of Ganga Plain

The Five Tinais of Ancient Tamil Sangam Poetry

Ancient Tamil Sangam poets divided the land into five landscapes called tinais. Each tinai is linked to particular deities, types of human activity, seasons and emotions such as love or separation. This classification emphasises how people's lives are shaped by their environment.

The five tinais and their characteristics are as follows:

• Kurinji: Represents mountainous regions where hunting and gathering were common occupations.
• Mullai: Refers to grasslands and forests where cattle rearing was typical.
• Marudam: Describes fertile agricultural plains where farming was the main activity.
• Neydal: Represents coastal regions associated with fishing and seafaring.
• Palai: Refers to arid, desert-like lands where travelling and fighting were often the main concerns.

These tinais offer a cultural and literary way to understand landscapes and the human activities connected to them. You do not need to memorise every detail, but you should understand what each tinai represents.

Glossary

1. Altitude: The height of an object above sea level. Examples: the altitude of a mountain peak, a bird in flight or an aeroplane.
2. Precipitation: Water that falls from the atmosphere to the ground in the form of rain, snow or hail.
3. Montane forest: A type of forest that grows on mountain slopes, often dominated by conifer trees.
4. Moss: A small green plant without flowers or true roots that often covers rocks and soil like a soft carpet.
5. Lichen: A plant-like organism made of a fungus and an alga living together; it commonly grows on rocks, walls and tree bark.
6. Terrain: The physical features of a piece of land as seen from the ground.
7. Valley: A low area between hills or mountains, often with a river or stream running through it.
8. Flash flood: A sudden, local flood often caused by a cloudburst or very heavy rain.
9. Landslide: The sudden movement or collapse of earth and rock down a slope or mountainside.
10. Avalanche: The rapid fall of a large mass of snow, ice or rocks down a mountainside; often triggered when snow starts to melt or when layers of snow become unstable.
11. Cloudburst: A very sudden and violent torrential rainfall.
12. Sea level: The average level of the surface of the oceans, also called the mean sea level. Altitudes are measured from sea level.
13. Confluence: The place where two or more rivers meet.
14. Resilience: The ability to face difficulties, adapt to changes and recover from challenges.