Social Science : Term 2 Unit 2 : Physical Features of Tamil Nadu
Unit 2
Physical Features of Tamil Nadu
Learning Objectives
Children will be able to:
•understand the physical features of Tamil Nadu.
•locate mountain, plateau, plain and coastal regions in Tamil Nadu.
•describe the features of mountains, plateaus, plains and coast.
•explain the types of forests found in Tamil Nadu.
Our state
Tamil Nadu is located in the South of India. It is the eleventh largest state in India.
Tamil Nadu and its neighbours
It shares boundaries with
• Andhra Pradesh on the North
• Karnataka on the North west
• Indian Ocean on the South
• Kerala on the West
• Bay of Bengal on the East
Tamil Nadu extends upto Kanniyakumari which forms the southern most tip of India. It is the meeting point of Arabian Sea, Indian Ocean and Bay of Bengal.
The Pulicat lake is situated at the northern end of Tamil Nadu.
DO YOU KNOW?
Tamil Nadu had 32 districts. Recently ,government announced 3 more districts namely Kallakurichi, Chengalpattu and Tenkasi. At present(2019) there are 35 districts.
Activity
1. On the political map of India shade any two neighbouring States of Tamil Nadu.
2. Mark the Indian Ocean, the Arabian Sea and the Bay of Bengal on the map.
Do You Know?
The Madras Presidency called as Tamil Nadu comprised of Andhra Pradesh, Karnataka, Kerala and Odisha. Later in 1953, Telugu speaking region of the state was split to form Andhra Pradesh. Similarly, in 1956, Malayalam and Kannada speaking regions of the state were split into Kerala and Mysore.
Landscape of Tamil Nadu
The landscape of Tamil Nadu can be divided into four categories namely:
1. Mountains
2. Plateaus
3. Plains
4. Coast
1. Mountains
Tamil Nadu is the only state in India which has both the Western ghats and Eastern ghats. They meet at the Nilgiri hills in Tamil Nadu. Doddabetta is the highest peak in Nilgiri hills. Tamil Nadu has various hill stations like Ooty, Kodaikkanal, Kolli hills, Kothagiri and Yercaud.
The Eastern ghats do not get enough rainfall unlike the Western ghats which receives lot of rainfall. The plantations grown in these ghats include tea, coffee and spices.
Tamil Nadu has rich flora and fauna. Mudumalai wildlife sanctuary, Indira Gandhi wildlife sanctuary and National park in Anaimalai are in the Western ghats of the state. There are a variety of plant species found in them. The Kurunji shrub is the most special of them all. Kurunji flowers blossom once in 12 years.
Try to Answer
1. Where do the Western ghats andEastern ghats meet ?
Answer: Nilgiri hills.
2. Name any two wildlife sanctuaries inthe Western ghats of Tamil Nadu.
Answer: Mudumalai wildlife sanctuary, Indira Gandhi wildlife
2. Plateaus
There are three plateaus in Tamil Nadu namely Bharamahal plateau, Coimbatore plateau and Madurai plateau. There are many small hills between these plateaus. Chennimalai is one among those hills in Erode.
3. Plains
Plains in Tamil Nadu can be divided into river plains and coastal plains.
a) River plains
Rivers Palar, Cheyyar, Pennar and Vellar form the Northern plains. The middle river plain is formed by Cauvery and its tributaries. River Vaigai and Thamirabarani form the Southern plains.
River Cheyyar is a tributary of River Palar. It is a seasonal river that flows through the district of Tiruvannamalai.
Rivers and waterfalls of Tamil Nadu
b) Coastal plains
Coastal plains of Tamil Nadu are also called Cholamandalam plains which extend from Chennai to Kanniyakumari.
4. Coasts
Tamil Nadu has the third longest coastline in India. The coastal region extends from Chennai to Kanniyakumari. Pamban island forms a part of Ramanathapuram. It separates Gulf of Mannar and Palk strait. 13 districts share the coastline.
The notable beaches of Tamil Nadu are:
a) Marina Beach, the second longest urban beach in the world.
b) Rameswaram beach is famous for its beautiful view.
c) Kanniyakumari beach is famous for its beautiful views of sunrise and sunset over the water.
Coastal areas of Tamil Nadu
DO YOU KNOW? Pamban bridge in Rameswaram is India‛s first sea bridge opened in the year 1914.
Activity
On the district map of Tamil Nadu shade any three coastal districts of Tamil Nadu.
Do You Know? Droogs are steep rocks. Rock fort is a famous droog in Tiruchirapalli (Tamil Nadu).
Waterfalls of Tamil Nadu
Waterfalls is an area where the river water flows down from a mountain. Tamil Nadu has several waterfalls. Some of them are:
a) Hogenakkal waterfalls is located in Dharmapuri on the River Cauvery. It is known for bathing areas, boat rides and attracts many tourists all round the year.
b) Courtallam waterfalls is located in Tenkasi. It is in the Western ghats on the river Chittar. There are a total of nine falls of which Peraruvi, Aintharuvi and Puli Aruvi are the most prominent.
c) Suruli waterfalls is located in Theni. Here the water falls from a series of rock steps.
d) Vattaparai waterfalls is located in Kanniyakumari. The falls is surrounded by forest on all sides. People are allowed to take a natural bath here.
Try to Answer
1. Name some important rivers inTamil Nadu.
Answer:Palar, Cheyyar, Pennar, Vellar, Cauvery, Vaigai and Thamirabarani.
2. Where is Courtallam waterfalls located?
Answer:Courtallam waterfalls is located in Tenkasi.
Climate of Tamil Nadu
Tamil Nadu experiences tropical climate and there is very little difference between summer and winter. The temperature during summer can rise up to 40°C (40 degree celsius). Due to its location, Tamil Nadu experiences hot and humid weather almost throughout the year with mild winter. Tamil Nadu is dependent on monsoon rains and often faces droughts if monsoon fails.
Seasons of Tamil Nadu:
1. Winter season (January – February)
2. Summer season (March – May)
3. South West monsoon (June – September)
4. North East monsoon (October – December)
Try to Answer
1. During which months does the State receive rain fall from South West monsoon?
Answer: June to September
2. Describe the weather of Tamil Naduin a sentence.
Answer: Tamil Nadu experiences hot and humid weather almost throughout the year with mild winter.
DO YOU KNOW?
Thiruthani recorded the all-time highest temperature of 48.6°C in May 2003.
Source: Indian Meteorological Department (IMD)
Forests
There are many types of forests across Tamil Nadu. Most of these forests are found in the areas near the ghats. These forests have so many types of trees. The topmost branches of the trees form a continuous chain such that little or no sunlight hits the ground, this is called canopy. The forests are divided based on the canopy cover:
Very Dense Forest:The Nilgiris, Coimbatore, Tirunelveli, Erode,
ModerateDense Forest:The Nilgiris, Coimbatore, Erode, Krishnagiri
Open Forest :Salem, Vellore, Dharmapuri
The forests can also be grouped as:
a) Evergreen forests:
The word evergreen means:
Ever (always) + green = Always green
The trees in these forests have leaves that are always green. In Tamil Nadu we find evergreen forests in the Western ghats of Tirunelveli, Kanniyakumari, The Nilgiris and Coimbatore.
b) Deciduous forests:
The trees in these forests shed their leaves during the dry season.
These forests are usually found near the evergreen forests. They generally grow in the lower regions of the hills.
c) Swamp (Mangrove) forests:
The word swamp means areas that are low where water gets collected easily. These forests are usually found near the beaches and river beds.
The Pichavaram mangrove forest is located near Chidambaram in Tamil Nadu.
Glossary
1. Flora and fauna – The plants and the animals of an environment.
2. Ghat – A mountain pass / mountain range.
3. Drought – A prolonged period of very low rainfall.
4. Weather – The daily state of the atmosphere, or air, in any given place.
5. Climate – The average of weather conditions in an area over a long period.
Recap
•Tamil Nadu is located in the South of India.
• Landscapes can be divided into four categories namely mountains, plateaus, plains and coasts.
• Plains are found along the rivers and the coasts.
• The coastline of Tamil Nadu is shared by 13 districts.
• Tamil Nadu has a tropical climate.
•Forests can be grouped as evergreen forests, deciduous forests and swamp forests.
Evaluation
I. Choose the correct answer.
1. Which wildlife sanctuary is located in Tamil Nadu?
a. Mudumalai wildlife sanctuary
b. Corbett national park
c. Sunderbans national park
d. Ranthambore national park
Answer: a) Mudumalai wildlife sanctuary
2. Western ghats and Eastern ghats meet at __________.
a. Aravalli range
b. Nilgiri hills
c. Himalayan range
d. Vidhyas range
Answer: b) Nilgiri hills
3. The topmost branches of trees form a chain called __________.
a. sunlight
b. canopy
c. forest
d. mangrove
Answer: b) canopy
4. Tamil Nadu experiences __________.
a. extreme winters
b. highest rainfall
c. tropical climate
d. snow fall
Answer: c) tropical climate
5.__________ are found in the places where there is heavy rainfall.
a. Deciduous forests
b. Swamp forests
c. Evergreen forests
d. None of them
Answer: d) None of them
II. Match the following.
1. Mountain ranges in Tamil Nadu – Pamban bridge
2. Suruli waterfall – Western and Eastern ghats
3. India‛s first sea bridge -Theni
4. Pichavaram – Third longest in India
5. Tamil Nadu‛s coastline – Mangrove forest
Answer:
1. Mountain ranges in Tamil Nadu – Western and Eastern ghats
2. Suruli waterfall – Theni
3. India‛s first sea bridge – Pamban bridge
4. Pichavaram – Mangrove forest
5. Tamil Nadu‛s coastline – Third longest in India
III. True or False.
1. Tamil Nadu is the eleventh largest state in India. (True)
2. Taml Nadu is located in the west of India.(False)
3. Kurunji flowers blossom once in 2 years.(False)
4. Tamil Nadu experiences hot and humid weather throughout the year.(True)
5. Deciduous forests do not shed leaves.(False)
IV. Answer in brief.
1. Name the states that Tamil Nadu shares boundary with.
• Andhra Pradesh on the North.
• Karanataka on the North west.
• Kerala on the west.
2. What are the different landscapes of Tamil Nadu?
The different landscapes of Tamil Nadu are 1. Mountains 2.Plateaus 3.Plains 4. Coast
3. What are the different plains in Tamil Nadu?
The different plains in Tamil Nadu are river plains and coastal plains
4. Name the waterfalls in Tamil Nadu.
Hogenakkal waterfalls, Courtallam waterfalls, Suruli waterfalls, Vattaparai waterfalls.
5. Describe the climate of Tamil Nadu.
Tamil Nadu experiences tropical climate, hot and humid weather almost throughout the year with mild winter.
6. Differentiate evergreen forests and deciduous forests.
Evergreen forests
1. Do not shed their leaves in any season.
2. They are rain forests.
3. They are sensitive to temperatue.
Deciduous forests
1. Shed their leaves during the dry season.
2. They are monsoon forests.
3. They are sensitive to rainfall.
Project
Mark the following features of Tamil Nadu on the map.
• Mountain
• Plateau
• Plain
• Coast
• Waterfall
Activity
1. On the political map of India shade any two neighbouring States of Tamil Nadu.
2. Mark the Indian Ocean, the Arabian Sea and the Bay of Bengal on the map.
Try to Answer
1. Where do the Western ghats andEastern ghats meet ?
Answer: Nilgiri hills.
2. Name any two wildlife sanctuaries inthe Western ghats of Tamil Nadu.
Answer: Mudumalai wildlife sanctuary, Indira Gandhi wildlife
Activity
On the district map of Tamil Nadu shade any three coastal districts of Tamil Nadu.
Try to Answer
1. Name some important rivers in Tamil Nadu.
Answer: Palar, Cheyyar, Pennar, Vellar, Cauvery, Vaigai and Thamirabarani.
2. Where is Courtallam waterfalls located?
Answer: Courtallam waterfalls is located in Tenkasi.
Try to Answer
1. During which months does the State receive rain fall from South West monsoon?
Answer: June to September
2. Describe the weather of Tamil Naduin a sentence.
Answer: Tamil Nadu experiences hot and humid weather almost throughout the year with mild winter.
