This document provides an overview of the physical features of India. It discusses how the Indian subcontinent was formed from the breakup of Gondwana land and the subsequent collision with the Eurasian plate. This led to the formation of key landforms like the Himalayas and the peninsular plateau. It then describes the major physical divisions of India including the Himalayan mountains, northern plains, peninsular plateau, Indian desert, coastal plains, and islands. It provides details about the characteristics of each region and how they were formed.
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This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
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3. INTRODUCTION
• India is a vast country with varied landforms.
Our country has practically all major physical
features of the earth i.e. mountains, plains,
deserts, plateaus and islands. India is a large
landmass formed during different geological
periods which has influenced her relief. Besides
geological formations, a number of processes
such as weathering, erosion and deposition have
created and modified the relief its present form.
4. CAUSES OF PLATE
MOVEMENT
• The movement of the plates results
in the building up of stresses within
the plates and the continental rocks
above, leading to folding, faulting
and volcanic activity.
5. • Basically there are three types of plate
boundaries:
1. Transform Boundary-In the event of two
plates coming together they may either collide
and crumble, or one may slide under the
other. At times, they may also move
horizontally past each other and form
transform boundary.
8. PLATE MOVEMENT
• The movement of these plates have
changed the position and size of the
continents over millions of years. Such
movements have also influenced the
evolution of the present landform features
relief of India
9. • The oldest landmass, (the Peninsula part), was a part of the
Gondwana land. The Gondwanaland included India,
Australia, South Africa and South America as one single land
mass. The convectional currents split the crust into a number
of pieces, thus leading to the drifting of the Indo-Australian
plate after being separated from the Gondwana land, towards
north. The northward drift resulted in the collision of the
plate with the much larger Eurasian Plate. Due to this
collision, the sedimentary rocks which were accumulated in
the geosynclines known as the Tethys were folded to form the
mountain system of western Asia and Himalaya. The
Himalayan uplift out of the Tethys sea and subsidence of the
northern flank of the peninsular plateau resulted in the
formation of a large basin. In due course of time this
depression, gradually got filled with deposition of sediments
by the rivers flowing from the mountains in the north and the
peninsular plateau in the south
11. The Himalayan Mountains
• The Himalayas, geologically young and
structurally fold mountains stretch over the
northern borders of India. These mountain
ranges run in a west-east direction from the
Indus to the Brahmaputra. The Himalayas
represent the loftiest and one of the most rugged
mountain barriers of the world. They form an
arc, which covers a distance of about 2,400 Km.
Their width varies from 400 Km in Kashmir to
150 Km in Arunachal Pradesh. The altitudinal
variations are greater in the eastern half than
those in the western half.
14. THE GREATER OR INNER
HIMALAYA
It is the most continuous range consisting of the loftiest
peaks with an average height of 6,000 metres.
It contains all the prominent Himalayan peaks like –
Mt. Everest (8,848m) in Nepal and Kanchenjunga(8,598)
Sikkim in India.
The folds of Great Himalayas are asymmetrical in
nature.
The core of this part of Himalayas is composed of
granite.
It is perennially snow bound, and a number of glaciers
descend from this range.
15. Himachal or lesser Himalaya
The ranges are mainly composed of highly
compressed and altered rocks.
The altitude varies between 3,700 and 4,500 metres
and the average width is of 50 Km.
While the Pir Panjal range forms the longest and the
most important range, the Dhaula Dhar and the
Mahabharata ranges are also prominent ones.
This range consists of the famous valley of Kashmir,
the Kangra and Kullu Valley in Himachal Pradesh.
This region is well known for its hill stations
16. THE SHIWALIKS
They extend over a width of 10-50 Km and have an
altitude varying between 900 and 1100 metres.
These ranges are composed of unconsolidated
material such as mud, silt and soft rocks and is
prone to earthquakes and Landslides.
Some narrow valleys are found between Shiwaliks
and Himachal. They are called duns. For example
Dehradun.
18. The Northern Plain
• The northern plain has been formed by the interplay of
the three major river systems, namely– the Indus, the
Ganga and the Brahmaputra along with their tributaries.
This plain is formed of alluvial soil. The deposition of
alluvium in a vast basin lying at the foothills of the
Himalaya over millions of years, formed this fertile
plain. It spreads over an area of 7 lakh sq. km. The plain
being about 2400 Km long and 240 to 320 Km broad, is a
densely populated physiographic division. With a rich
soil cover combined with adequate water supply and
favourable climate it is agriculturally a very productive
part of India
19. The northern plains
broadly is divided into 3
sections
• THE PUNJAB PLAIN
• THE GANGA PLAIN
• THE BRAHMAPUTRA PLAIN
20. • The Western Part of the northern plain is
called the Punjab Plain.
• It is formed by Indus and its tributaries. The
large part of this plain lies in Pakistan.
• The Indus and its tributaries :-the Ravi, the
Chenab ,etc.
• The section of the plain is dominated by
Doabs.
22. • It spreads over the states of North
India , Haryana, Delhi , Bihar, U.P. ,
Jharkhand ,and West Bengal,
particularly in Assam lies the
Brahmaputra
23. The Northern Plains can be divided
into 4 regions
• The narrow belt of about 8 to 16 km in width lying
parallel to the slopes of shiwalik are called bhabar.
• The streams and rivers re-emerge and create a wet
,swampy and marshy region known as terai.
• The flood plains of the rivers and present a terrace
like feature is known as bhangar.
• The soil in this region contains calcareous deposits
known as kankar.
25. The Peninsular plateau is a tableland composed
of the old crystalline, igneous and metamorphic
rocks. It was formed due to the breaking and
drifting of the Gondwana land. The plateau has
broad and shallow valleys and rounded hills.
26. This plateau consists of two
broad divisions are:
Central highlands
Deccan plateau
28. The Central Highlands
The part of peninsular plateau lying to
the north of the narmada river covering
a major area of the malwa plateau is
known as the central highlands.
The extend of central highlands is from
vindhya to aravalli hills.
The slope of central highlands is from
south-west to north-east
29. The rivers chambal,sind,betwa and ken
flow are according to the slope of the
plateau.
The central highlands are wider in the
west and are narrower in the east.
The chotanagpur plateau is the eastward
extension of central highlands.
The chotanagpur plateau is drained from
damodar river.
30. Deccan Plateau
The deccan plateau is a triangular
landmass that lies to the south of the
river narmada.
The deccan plateau is higher in the west
and slopes gently eastwards.
It is separated by fault from the
chotanagpur plateau.
31. The Western Ghats
Western Ghats lie parallel to the western
coast. They are continuous and can be crossed
through passes only. The Western Ghats are
higher than the Eastern Ghats. Their average
elevation is 900– 1600 metres
32. The Eastern Ghats
• The Eastern Ghats stretch from the
Mahanadi Valley to the Nigiris in the south.
The Eastern Ghats are discontinuous and
irregular and dissected by rivers draining
into he Bay of Bengal. Their average
elevation is 600 metres
34. The Indian desert lies towards the western
margins of the Aravali Hills.
It is an undulating sandy plain covered with
sand dunes.
This region receives very low rainfall below
150 mm per year.
It has arid climate with low vegetation cover.
Streams appear during the rainy season.
35.
36.
37. The largest hot desert in the world, northern Africa's Sahara, reaches
temperatures of up to 122 degrees Fahrenheit (50 degrees Celsius) during
the day. covering 9 million square kilometers and 12 countries.
Hot deserts usually have a large diurnal and seasonal temperature range,
with high daytime temperatures, and low nighttime temperatures (due to
extremely low humidity).
In hot deserts the temperature in the daytime can reach 45 °C/113 °F or
higher in the summer, and dip to 0 °C/32 °F or lower at nighttime in the
winter.
Urban areas in deserts lack large (more than 14 °C/25 °F) daily
temperature variations, partially due to the urban heat island effect.
Many deserts are formed by rain shadows; mountains blocking the path of
precipitation to the desert (on the lee side of the mountain).
39. • The common conceptions of deserts as dry and hot, there are
cold deserts as well.
• Desert animals have adapted ways to help them keep cool
and use less water.
• FOR EXAMPLE, camel can go for days without food and
water. Many desert animals are nocturnal, coming out only
when the brutal sun has descended to hunt. Some animals,
like the desert tortoise in the southwestern United States,
spend much of their time underground. Most desert birds are
nomadic, crisscrossing the skies in search of food. Because of
their very special adaptations, desert animals are extremely
vulnerable to introduced predators and changes to their
habitat.
41. The Coastal Plains
• The northern part of
the coast is called the
Konkan (Mumbai –
Goa), the central
stretch is called the
Kannad Plain while
the southern stretch
is referred to as the
Malabar coast The
plain along the Bay of
Bengal are wide and
level
• In the northern part, it is
referred to as the Northern
Circar, while the southern
part is known as the
Coromandal Coast. Large
rivers such as the
Mahanadi, the Godavari,
the Krishna and the Kaveri
have formed extensive
delta on this coast. Lake
Chilika is an important
feature along the eastern
coast
42. THE ISLAND
• An island is any piece of sub-continental land that is
surrounded by water. Very small islands such as
emergent land features on atolls can be
called islets, cays or keys. An island in a river or lake may
be called an eyot , or holm. A grouping of geographically
or geologically related islands is called an archipelago.
• An island may still be described as such despite the
presence of an artificial land bridge, for
example Singapore and its causeway, or the
various Dutch delta islands, such as Ijssel monde. Some
places may even retain "island" in their names for
historical reasons after being connected to a larger
landmass by a wide land bridge, such as Coney Island.
Conversely, when a piece of land is separated from the
mainland by a man-made canal, for example the
Peloponnese by the Corinth Canal, it is generally not
considered an island.
43. Lakshadweep Islands
Lakshadweep Islands group are lying close to the
Malabar coast of Kerala.
This group of islands is composed of small coral islands.
Earlier they were known as Laccadive, Minicoy and
Amindive. In 1973 these were named as Lakshadweep.
It covers small area of 32 sq km. Kavaratti island is the
administrative headquarters of Lakshadweep.
This island group has great diversity of flora and fauna.
The Pitli island, which is uninhabited, has a bird
sanctuary.
44. Andaman and Nicobar Islands
They are bigger in size and are more
numerous and scattered.
The entire group of islands is divided into two
broad categories – The Andaman in the north
and the Nicobar in the south.
It is believed that these islands are an
elevated portion of submarine mountains.
These island groups are of great strategic
importance for the country.
45. DO YOU KNOW?
• Most volcanoes and earthquakes in the world
are located at plate margins, but some do occur
within the plates.
• Majuli, in the Brahmaputra River is the largest
inhabited riverine island in the world.
• ‘Doab’ is made up of two words- ‘do’ meaning
two and ‘ab’ meaning water. Similarly
‘Punjab’ is also made up two words- ‘Punj’
meaning five and ‘ab’ meaning water.
46. • The Chilika Lake is the largest salt water lake
in India. It lies in the state of Orissa, to the
south of the Mahanadi delta.
• India’s only active volcano is found on Barren
island in Andaman and Nicobar group of
Islands.