CLASS 7 SOCIAL SCIENCE · PART 1 · CHAPTER 1 · STUDY NOTES
Geographical Diversity of India
Explore India’s landscapes with simple explanations, labelled book photographs and models that show why land, water and people connect.
01 / EXPLORE & UNDERSTAND
One country, many landscapes
India has mountains, plains, deserts, a large peninsula and islands. Each helps shape life in a different way.
Look at the change in relief
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1. Locate the large regions
India is part of Asia. Look for the Himalayas in the north, the northern plains, the Thar Desert, the peninsular plateau, the coasts and the islands. These places do not all have the same land, water or climate.
2. Ask how the landscape affects life
Steep slopes can make road building difficult. Flat plains can make farming and transport easier. Geography creates opportunities and challenges, but people’s knowledge, technology and choices also shape how they live.
Your turn
Question
Why might a mountain village and a coastal village need different kinds of transport?
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02 / EXPLORE & UNDERSTAND
A slow collision built the Himalayas
Two large pieces of Earth’s outer shell pushed together. The land between them rose.
The rocks show the folding
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1. Two large plates slowly came together
About 50 million years ago, the Indian plate collided with the Eurasian plate. The rocks between them were compressed, folded and pushed upward. Think of a carpet wrinkling when pushed—but rock changes happen over a much longer time.
2. A mountain belt, not one sudden mountain
This helped form the Himalayas, a range about 2,500 km long. Plate movement continues slowly. The photograph shows real folded layers; it captures their shape today, not the movement that formed them.
A little deeper: Before the collision
The chapter explains that India was once part of Gondwana, near Africa. It separated and slowly moved north. The collision did not create all of India; it helped build the Himalayan mountain belt.
Your turn
Question
What can bent rock layers help us understand about mountain formation?
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03 / EXPLORE & UNDERSTAND
Three broad Himalayan belts
Moving from the high interior towards the plains, the mountains generally become lower.
From the high ranges towards the plains
The high inner belt includes the highest peaks and much permanent snow. It contains many ridges and valleys, not one peak.
1. Read from the high ranges towards the plains
Himadri, or Greater Himalayas, has the highest peaks and much permanent snow. Himachal, or Lesser Himalayas, includes middle ranges and many hill towns. Shivalik is the outer, lower foothill belt.
2. Think of belts containing many mountains
These names do not mean three individual peaks. Each belt includes many ridges and valleys. The sketch compares their general height; use a physical map to find their locations.
A little deeper: Examples help you locate the belts
Everest and Kanchenjunga are examples of high Himalayan peaks. The middle belt includes hill towns such as Shimla, Nainital, Mussoorie and Darjeeling. Use an atlas to locate examples; a height sketch does not tell you their exact positions.
Your turn
Question
Which belt would you associate with the lower outer foothills?
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04 / EXPLORE & UNDERSTAND
Snow and ice help feed rivers
Meltwater can flow from a glacier into a stream and then a river.
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1. Find the ice opening and the water
The photograph shows Gaumukh, the lower end of Gangotri Glacier. The labelled opening is in the glacier front. Below it, the visible stream carries water away from the ice.
2. Follow the river downstream
The Bhagirathi emerges from this area. Farther downstream, it joins the Alaknanda to form the Ganga. Snow and ice melt help supply water, and rainfall contributes too. Not every river starts at a glacier.
A little deeper: Why mountain water matters downstream
Many Himalayan rivers continue into the plains. Water supports farming and daily needs far from the ice. Changes upstream can therefore affect communities downstream.
Your turn
Question
Would it be correct to say that all Ganga water comes only from glacier ice?
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05 / EXPLORE & UNDERSTAND
Living with mountain slopes and forests
People adapt buildings, farming and travel to steep land and changing weather.
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1. See how materials are used together
In this kath-kuni house, timber forms the balcony and framing, while masonry is visible on the lower wall. Local building knowledge uses available materials. A photograph alone cannot prove that a building is safe in every earthquake.
2. Homes belong to a wider living landscape
Himalayan forests support many plants and animals. Communities have knowledge about local forests and weather. Caring for forests protects habitats and helps reduce soil loss; conservation needs both local participation and wider support.
A little deeper: Protecting a whole habitat
The book gives the Great Himalayan National Park as an example of biodiversity conservation. Government action and village communities both matter. Protecting animals also means protecting their forests, water and food sources.
Your turn
Question
How can conserving a mountain forest help both wildlife and people?
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06 / EXPLORE & UNDERSTAND
A desert can be hot or cold
Low rainfall is the key idea. “Desert” does not always mean hot sand.
Ladakh · a cold desert
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Thar · a hot desert
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1. Dry does not always mean hot
A desert receives very little rainfall. Ladakh is a cold desert with rocky valleys and very cold winters. The Thar is a hot desert with sandy areas and wind-shaped dunes. Little rain is what they share.
2. Look for different ways of living
People adapt to each environment. In Ladakh, yaks support transport and livelihoods. Pangong Tso is a salty lake; a salty lake need not be connected to the sea. Avoid treating every desert as the same landscape.
A little deeper: Resources and adaptations in Ladakh
The yak supports mountain livelihoods through products such as milk and wool, and as a transport animal. Pangong Tso’s water contains dissolved minerals from its surroundings. A salty lake is not necessarily connected to the sea.
Your turn
Question
A place is very cold and receives very little rain. Can it be a desert? Why?
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07 / EXPLORE & UNDERSTAND
Rivers build fertile plains
Rivers carry small pieces of rock and soil. They can leave this material on the land.
Look at the level fields
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1. Rivers move more than water
Rivers carry small pieces of rock and soil called sediment. Where the flow slows, some material settles. The Indus, Ganga, Brahmaputra and their tributaries helped build the northern plains through repeated deposits.
2. Benefits come with challenges
Alluvial soil and water support farming. Flat ground helps roads and railways. But floods can damage crops and homes, so water management and safe planning matter too.
Your turn
Question
Name two reasons why many people can farm in the northern plains.
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08 / EXPLORE & UNDERSTAND
In the Thar, saving water matters
People use local knowledge to manage scarce rainwater.
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1. Notice the cover and storage body
The photograph shows a covered water-storage structure in the Thar. The labels point to its visible cover and outside wall. We cannot see the stored water or the full underground structure in this photograph.
2. Collect scarce rain, then use it carefully
Structures such as kunds and taankas help communities store rainwater. Storage is useful where rain is limited. Clothing, travel and work also adapt to local conditions. Collected water is not automatically safe to drink; safe handling and treatment matter.
Your turn
Question
Why could covering a water-storage structure help?
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09 / EXPLORE & UNDERSTAND
Old mountains still matter
The Aravalli range is old and worn down, but supports habitats and people.
See the Aravalli landscape
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1. Old hills still support life
The Aravalli extends through parts of Gujarat, Rajasthan, Haryana and Delhi. Its hills contain habitats and mineral resources. Vegetation helps hold soil and supports living things.
2. Consider the whole connection
Mining can provide materials and work, but poorly managed extraction and forest loss can damage land and habitats. A good decision considers water, soil, wildlife and people together.
A little deeper: Geography links work and history
The chapter connects Aravalli minerals such as marble, zinc and copper with construction and mining. It also shows forts among the hills, including Kumbhalgarh. Minerals create opportunities; extraction still needs care for the landscape and people.
Your turn
Question
Why is “the mountains are old, so they are not useful” a poor conclusion?
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10 / EXPLORE & UNDERSTAND
A plateau is high land with a broad top
Much of peninsular India is old rocky upland. It is not one perfectly flat table.
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1. Recognise the high edge
A plateau is raised land with a broad top. At Jog Falls, water flows from the high edge into a lower valley. The labels mark the edge and falling water; they do not measure the height.
2. Connect land with resources and people
The peninsular plateau includes forests, rivers, minerals and many communities. The Western and Eastern Ghats form important edges. Where suitable systems are built, moving water can drive turbines to generate electricity.
A little deeper: Remember these regional names
The Deccan Plateau lies between the Western and Eastern Ghats. The northern part of the Western Ghats is also called the Sahyadri. Forest communities have distinct languages and traditions; they should not be described as one identical group.
Your turn
Question
How does the waterfall photo help you recognise a plateau edge?
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11 / EXPLORE & UNDERSTAND
Ghats and the direction of rivers
Most major peninsular rivers flow east, but there are important exceptions.
1. Compare the two sides
The Western Ghats are generally higher and more continuous. The Eastern Ghats are lower and broken by rivers. Much of the plateau slopes gently eastward.
2. Remember the west-flowing exceptions
Godavari, Krishna, Kaveri and Mahanadi flow towards the Bay of Bengal. Narmada and Tapti flow west towards the Arabian Sea. A broad slope helps explain a pattern, but local valleys determine individual river routes.
A little deeper: Why the general direction makes sense
Much of the plateau has a gentle eastward slope. This helps explain why many major rivers flow towards the Bay of Bengal. Local valleys and land structures matter too, so the broad slope does not erase west-flowing exceptions.
Your turn
Question
Why should you avoid the rule “every peninsular river flows east”?
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12 / EXPLORE & UNDERSTAND
Rivers and the sea shape coasts
A coast is where land meets the sea. River mouths and shallow coastal waters can take different forms.
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Three different shapes where land meets water
Delta
Sediment builds land; river channels branch.
Estuary
The river meets the sea in an open mouth.
Lagoon
A barrier separates shallow water from the open sea.
1. Separate three coastal features
At an estuary, river water meets the sea. A delta is land built from river sediment near a river mouth. A lagoon is shallow water separated from the open sea by a natural barrier.
2. Connect the names to examples
The western coastal plain is generally narrow and has many estuaries. The eastern plain is generally wider and has large deltas. Chilika and Pulicat are lagoons. Coasts support fishing, farming, ports and trade in different places.
A little deeper: Coasts support travel and trade
The west coast runs through Gujarat, Maharashtra, Goa, Karnataka and Kerala. Ports connect coastal towns with sea routes. On the east coast, broad river deltas also support farming. A coast can support more than one kind of work.
Your turn
Question
What makes a delta more than just water at a river mouth?
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13 / EXPLORE & UNDERSTAND
India’s two major island groups
An island is surrounded by water. An archipelago is a group of islands.
A reef in the Andaman Islands
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See the habitat beneath the water
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1. Use the surrounding sea to locate them
Lakshadweep lies in the Arabian Sea and is known for coral islands and reefs. The Andaman and Nicobar Islands lie in the Bay of Bengal and have rich forest and marine habitats.
2. Do not give every island the same origin
Barren Island has India’s only active volcano. That does not make every island in the group volcanic. Coral reefs are living habitats. The Andaman Islands also connect to history through the Cellular Jail.
A little deeper: Islands connect nature and history
Coral reefs are living marine habitats, not just coloured underwater rocks. The Andaman Islands also have a historical link: many freedom fighters were imprisoned in the Cellular Jail. The book connects the islands with both biodiversity and history.
Your turn
Question
Which sea would you look in to find Lakshadweep?
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14 / EXPLORE & UNDERSTAND
Mangroves live where land and tide meet
The Sundarbans is a large mangrove area in the Ganga–Brahmaputra delta, shared by India and Bangladesh.
A forest at the water’s edge
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1. A forest shaped by tides
The Sundarbans lie in the Ganga–Brahmaputra delta across India and Bangladesh. Tides bring water in and out. Mangroves can live in wet, salty conditions that many other plants cannot tolerate.
2. Roots help the habitat
Mangrove roots help trap sediment and protect shorelines. The forest supports many species, including the Bengal tiger. Mangroves reduce some coastal risks, but they cannot stop every storm or flood.
Your turn
Question
Why should a mangrove be studied together with water and wildlife?
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15 / EXPLORE & UNDERSTAND
People work with a rainy landscape
The Northeast has hills, forests, rivers and many communities. Meghalaya is known for very heavy rainfall.
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1. Find the crossing above the stream
In the photograph, roots form a crossing over the stream. Some Khasi and Jaintia communities in Meghalaya guide growing tree roots into living bridges. The bridge is made through knowledge and care, not overnight.
2. Climate is only part of the explanation
Meghalaya includes the Garo, Khasi and Jaintia hills and receives heavy rainfall in some areas. Rain helps explain the wet environment, but community history, skill and continued maintenance explain how a living bridge is made and used.
Your turn
Question
Why is a living root bridge an example of both nature and human skill?
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16 / EXPLORE & UNDERSTAND
Geography gives opportunities—and responsibilities
No region is just a list of features. Ask how water, habitats and people depend on one another.
A human activity changes the landscape
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1. Trace one effect beyond its starting place
Imagine forest cover is removed from a slope. Rain can wash more exposed soil downhill. This may affect streams and communities farther away. A change in one place can affect another.
2. Explain a choice, not just a list of features
When planning roads, farming, tourism or mining, ask: who benefits, what might be harmed, and how can harm be reduced? Geography helps us connect land, water and people when making decisions.
A little deeper: One feature, several effects
A mountain range can affect rain, rivers, travel and livelihoods at the same time. Explain one connection fully before adding the next. Avoid saying that geography decides everyone’s life: technology, choices and public policy matter too.
Your turn
Question
A hillside forest is removed. Explain one possible effect on people further down the slope.
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Take these ideas with you
- Compare landscapes through land, water, climate and people.
- Notice connections: glaciers and rivers, sediment and plains, roots and coasts.
- Explain both opportunities and challenges; avoid “one rule for every place”.
Use your understanding in a new situation
Question
A visitor sees very cold weather and says, “This cannot be a desert.” How would you explain Ladakh?
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A new road is planned through a forested slope. Name one benefit and one possible concern that planners should examine.
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Sign inNew here? Sign up freeNCERT · Chapter source PDF, pages 2, 7, 15, 18, 21, 22, 24, 25 · Original Learnijoy explanations and practice.