Samacheer Kalvi 6th Social Science Geography Solutions Term 1 Chapter 2 Land And Oceans

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Tamilnadu Samacheer Kalvi 6th Social Science Geography Solutions Term 1 Chapter 2 Land And Oceans

Samacheer Kalvi 6th Social Science Land And Oceans Textual Evaluation

A. Choose the correct answer

Question 1.
Which of the following is the smallest ocean on Earth?
(a) The Pacific Ocean
(b) The Indian Ocean
(c) The Atlantic Ocean
(d) The Arctic Ocean
Answer:
(d) The Arctic Oceans

Question 2.
The Malacca Strait connects
(a) The Pacific and Atlantic Oceans
(b) The Pacific and Southern Oceans
(c) The Pacific and Indian Oceans
(d) The Pacific and Arctic Oceans
Answer:
(c) The Pacific and Indian Oceans

Question 3.
A Which of the following oceans is the busiest ocean?
(a) The Pacific Ocean
(b) The Atlantic Ocean
(c) The Indian Ocean
(d) The Arctic Ocean
Answer:
(b) The Atlantic Ocean

Question 4.
The frozen continent is ……………
(a) North America
(b) Australia
(c)Antarctica
(d) Asia
Answer:
(c) Antarctica

Question 5.
A narrow strip of water that connects two large water bodies
(a) A Strait
(b) An Isthmus
(c) An Island
(d) A Trench
Answer:
(a) A Strait

B. Fill in the blanks :

1. The world’s largest continent is ___________.
2.  ___________ is the mineral rich plateau in India
3. The largest ocean is ___________.
4. Deltas are ___________ order landforms.
5. The Island continent is ___________.

Answer:

1. Asia
2. Chotanagpur Pkateau
3. The Pacific Ocean
4. third
5. Australia

C. Circle the odd one out

1. Africa, Europe, Australia, Sri Lanka.
2. The Arctic Ocean, the Mediterranean Sea, the Indian Ocean, the Atlantic Ocean
3. Plateau, Valley, Plain, Mountain
4. The Bay of Bengal, the Bering Sea, the China Sea, the Tasman Sea.
5. The Andes, the Rockies, the Everest, the Himalayas

Answer:

1. Sri Lanka
2. the Mediterranean Sea
3. Valley
4. The Bay of Bengal
5. the Everest

D. Match the following

Answer:

1. – b
2. – a
3. – d
4. – e
5. – c

E.

I. Consider the following statements.

Question 1.
1. Plains are formed by rivers.
2. The ‘South Sandwich Trench’ is found in the Indian Ocean.
3. Plateaus have steep slopes.
Choose the correct answer using the codes given below.
(a) 1 and 3 (b) 2 and 3
(c) 1,2 and 3 (d) 2 only
Answer:
(a) 1 and 3

II. Consider the following statements.

Question 1.
Statement I : Mountains are second order land forms.
Statement II : The Mariana Trench is the deepest trench in the world.
Which of the statement(s) is/are true?
(a) I is true; II is wrong (b) I is wrong; II is true
(c) Both the statements are true (d) Statements I and II are wrong.
Answer:
(c) Both the statements are true

F. Answer in a word

Question 1.
Which is the highest plateau in the world?
Answer:
Tibetan Plateau

Question 2.
Name a second-order landform.
Answer:
Mountains, plateaus and plains

Question 3.
Which ocean is named after a country?
Answer:
Indian Ocean

Question 4.
Name the islands located in the Arabian Sea.
Answer:
Lakshadweep islands and Minicoy islands

Question 5.
What is the deepest part of the ocean called as?
Answer:
Trench

G. Answer in brief.

Question 1.
What is a continent?
Answer:
The vast landmasses on Earth are called Continents.

Question 2.
Name the continents which surround the Atlantic Ocean.
Answer:

1. North America and South America in the west.
2. Europe and Africa in the east.

Question 3.
What are the oceans?
Answer:

1. An ocean is a vast expanse of water.
2. Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, and the Arctic Ocean are major oceans of the world.

Question 4.
List out the names of continents according to their size
Answer:

1. Asia
2. Africa
3. North America
4. South America
5. Antarctica
6. Europe and Australia.

Question 5.
Name the oceans which surround North America and South America.
Answer:
North America: On the west by the Pacific Ocean, on the east by Atlantic ocean and on the north by Arctic ocean
South America: On the west by the Pacific Ocean, on the east by Atlantic ocean.

H. Distinguish between.

Question 1.
A Mountain and a Plateau
Answer:
Mountain:

• A landform that rises 600 meters above its surroundings and has steep slopes is called a mountain.
• Mountains are found in isolation or in groups.
• The highest point of a mountain is known as a peak.
• The Andes mountain in South America is the longest mountain range in the world.

Plateau:

• Plateaus are the elevated portions of the Earth that have flat surfaces bounded by steep slopes.
• The elevation of plateaus maybe a few hundred meters or several thousand metre.
• The flat-topped part of the plateau is called Tableland.
• Tibetan Plateau is the highest plateau in the world.

Question 2.
An ocean and a sea?
Answer:

1. Plateaus are the elevated portions of the Earth that have flat surfaces bounded by steep slopes.
2. The elevation of plateaus maybe a few hundred meters or several thousand metre,
3. Tibetan plateau is the highest plateau in the world. So it is called the “Roof of the world”
4. The Chotanagpur plateau is one of the mineral-rich plateaus in India.
5. The Deccan plateau in peninsular India is of volcanic origin.

I. Answer the following questions in detail.

Question 1.
Mention the classification of landforms.
Answer:
First-order Landforms:

(i) Continents and oceans are grouped as first order and forms. the vast landmasses on Earth are called Continents and huge water bodies are called Oceans.

(ii) Asia is the largest continent, whereas Australia is the smallest one.

Second-order and forms:
The second-order and forms are categorised as mountains, plateaus, and plains.

Third-order and forms:
Third-order and forms are formed on mountains, plateaus and plains mainly by erosional and depositional activities of rivers, glaciers, winds and waves. Valleys, beaches, and sand dunes are some examples of third-order and forms.

Question 2.
Write a note on plateaus
Answer:

1. Plateaus are the elevated portions of the Earth that have flat surfaces bounded by steep slopes.
2. The elevation of plateaus maybe a few hundred metres or several thousand metre.
3. Tibetan Plateau is the highest plateau in the world.
4. Generally, plateaus are rich in minerals.
5. Chotanagpur Plateau is one of the mineral-rich plateaus in India.
6. Deccan Plateau in peninsular India is of volcanic origin.

Question 3.
Plains are highly populated. Give reasons
Answer:

1. Plains are flat and relatively low-lying lands. Plains are usually less than 200 meters above sea level.
2. Most plains are formed by rivers, their tributaries, and distributaries.
3. These plains are used extensively for agriculture due to the availability of water and fertile soil
4. They are most suitable for human habitation.
5. Hence, they are the highly populated regions of the world.

Question 4.
Give the important features of the Pacific Ocean.
Answer:

1. The Pacific Ocean is the largest and deepest ocean on Earth.
2. It is bounded by Asia and Australia in its west and North America and South America in its east.
3. It stretches from the Arctic Ocean in the North to the Southern Ocean around in the south.
4. The deepest point Mariana Trench is 10,994 m and is located in the Pacific Ocean.
5. A chain of volcanoes is also present around the Pacific Ocean. They are called the Pacific Ring of Fire.

Question 5.
Write down the importance of oceans.
Answer:

1. Oceans are the lifeblood of planet Earth and humankind.
2. They flow over nearly three-quarters of our planet.
3. They hold 97% of the planet’s water.
4. They produce more than half of the oxygen in the atmosphere.
5. Absorb the most carbon from it.
   1. The oceans along with the atmosphere, keep temperatures fairly constant worldwide.

J. Picture Study.

Question 1.

1. Name the landform.
2. What order of a landform is this?
3. By which activity of river is this landform formed?

Answer:

1. Valley
2. Third Order
3. Erosion

K. (ii) ACTIVITY

Question 1.
Give examples for the following using an Atlas.

a. Bay:_______,________,_______
Answer:
Bay of Bengal, Tokyo Bay, Korea Bay

b. Gulf:_______,________,_______
Answer:
Gulf of Kutch, Gulf of Mannar, Gulf of Aden

c. Island:_______,________,_______
Answer:
Sri Lanka, Maldives, Japan

d. Strait:_______,________,_______
Answer:
Strait of Gibraltar, Strait of Magellan, Palk strait

Question 2.
Map reading (with the help of atlas)

a. A sea in the east of India
b. Continents in the west of Atlantic Ocean
c. Continents in the south of Arctic Ocean
d. A strait between India and Sri Lanka
e. Oceans which surround Australia if.
f. Find out the Isthumusses
(Create more questions)
Answer:
a. Bay of Bengal
b. North America and South America
c. Almost completely surrounded by Eurasia and North America.
d. Palk Strait.
e. Indian Ocean to the west, the South Pacific Ocean to the East, and the Southern Ocean to the South.
f. Isthumusses – A Narrow piece of land connecting two larger areas across an expanse of water. Isthmus of Panama – Central America.

Question 3.
On the given outline map of the world, label the continents and mountain ranges.
Answer:

Question 4.
On the given outline map of the world, label oceans, seas, isthmus and straits.
Answer:

Samacheer Kalvi 6th Social Science Land And Oceans Intext Question

HOTS

Question 1.
December 11 International Mountain Day.
Prepare slogans, posters, and placards to celebrate International Mountain Day.
Answer:

1. “Mountains are among the most beautiful landmasses in the world.”
2. “Mountains are beautiful as they rise up above the clouds and show just how grand the world can be.”
3. “Great things are done when men and mountains meet. ”
4. “How glorious a greeting the sun gives the mountains.”
5. “Mountains are earth’s undecaying monuments.”
6. ‘The mountains, forests, and seas render men savage, they develop fiercely, but yet do not destroy the human.”
7. “Men stumble over pebbles, never over mountains.”
8. “Each fresh peak ascended teaches something.”
9. “Mountains are the beginning and end of the all-natural scenery.”
10. “He who climbs upon the highest mountains laughs at all tragedies, real or imaginary.”

Question 2.
You know the importance of the conservation of forests. Do you think the conservation of mountains is also equally important?
Answer:

1. Mountains make up more than a quarter of the planet’s landmass. These surfaces provide resources for nearly 700 million people throughout the world.
2. Mountains provide energy resources, food, and water to people all around the world.
3. But climate change could cause mountains to shrink.
4. Deforestation has also been a threat while natural disasters often damage many mountains.
5. Mountains are among the most beautiful landmasses in the world. So like conservation of forests, conservation of mountains also equally important

Question 3.
When you are walking on the Marina beach in Chennai, which order of landform are you on?
Answer:
Third-order of landform.

Question 4.
Why are the Red Sea, Dead Sea, and the Black Sea named so?
Answer:
(i) Red Sea – It is named Red sea because it contains Cyanobacteria which turns the normally blue-green water into a reddish one. It gets connected to the ocean without even one river meeting the sea.

(ii) Black Sea – The Black Sea was first named by the ancient Greeks as an inhospitable sea. The sea got this reputation because it was different to navigate and hostile tribes inhabited its shores. After the successful development of the coast by the Greek colonists, the sea was named a hospitable sea.

(iii) Dead Sea – The Dead Sea is roughly 8.6 times saltier than the ocean. This salinity makes for a harsh environment in which animals cannot flourish.

Question 5.
When you travel from Japan to California, which ocean would you travel across?
Answer:
The Pacific Ocean.

Question 6.
When you arrange the continents in ascending order according to their size, which ranks third?
Answer:
Antarctica.

Samacheer Kalvi 6th Social Science Land And Oceans Intext Activities

Question 1.
Complete the given table with the help of an atlas. Follow the example

Answer:

Question 2.

Answer:

Question 3.

Answer:

Samacheer Kalvi 6th Social Science Land And Oceans Additional Questions

A. Choose the correct answer

Question 1.
The largest continent is
(a) Europe
(b) Australia
(c) North America
(d) Asia
Answer:
(d) Asia

Question 2.
Mount Everest is located in …………….
(a) India
(b) Nepal
(c) Bhutan
(d) Pakistan
Answer:
(b) Nepal

Question 3.
The longest mountain range in the world is
(a) the Himalayas
(b) Rocky
(c) the Andes
(d) Alps
Answer:
(c) the Andes

Question 4.
Which of the following is not grouped under second-order landform?
(a) Plains
(b) Plateaus
(c) Valleys
(d) Mountains
Answer:
(c) Valleys

Question 5.
‘Roof of the world’ denotes to
(a) Tibetan Plateau
(b) Chotanagpur Plateau
(c) Deccan Plateau
(d) Malwa Plateau
Answer:
(a) Tibetan Plaleauj

Question 6.
The Bering Sea is the marginal sea of the Ocean.
(a) Pacific
(b) Indian
(c) Atlantic
(d) the Arctic
Answer:
(a) Pacific

Question 7.
The Reunion islands are present in Ocean.
(a) the Arctic
(b) Antarctic
(c) Indian
(d) Pacific
Answer:
(c) Indian

Question 8.
The land surrounded by water on three sides is called
(a) Bay
(b) Strait
(c) Peninsula
(d) Trench
Answer:
(c) Peninsula

B. Fill in the blanks:

1. The highest peak in the world is ___________.
2. In Sangam period, Mountain and its environs are classified as ___________ land.
3. The flat topped part of the plateau is called ___________.
4. The plains have been the ___________ from the earliest times.
5. Plain in North India is one of the ___________largest plains in the world.
6.  Sand dunes form the ___________ order landforms.
7. The process of removal of surface material from the Earth’s crust is called ___________.
8. The chain of volcanoes present around the Pacific Ocean is called the Pacific ___________.
9. The shape of the atlantic ocean resembles the letter ___________.
10. Bay of Bengal and Palk Bay are connected by ___________.

Answer:

1. Mt.Aeresti
2. Kurinji
3. Tableland
4. cradle of civilisations
5. Indo-Gangetic
6. Third
7. Erosion
8. Ring of fire
9. S
10. Palk Strait

C. Circle the odd one out

1. Rivers, Glaciers, Winds, Plains
2. Mariana Trench, Tasman Sea, Philippine Sea, Strait of Gibraltar
3. The Ross Sea, The Weddell Sea, The Davis Sea, The Red Sea
4. Palk Strait, The Arctic Ocean, Greenland, Eurasian Basin
5. Dharmapuri Plateau, Coimbatore Plateau, Madurai Plateau, Malwa Plateau

Answer:

1. Plains
2. Strait of Gibraltar
3. The Red Sea
4. Palk strait
5. Malwa plateau

D. Match the following

1. Kurinji – (a) Forest
2. Mullai – (b) Coastal Region
3. Marutham – (c) Deserts
4. Neithal – (d) Agricultural land
5. Palai – (e) Mountains

Answer:

1. – e
2. – a
3. – d
4. – b
5. – c

E. Consider the following statements.

Question 1.
1.Andes mountains are the longest mountain range in the world.
2.Mountains come under the second-order landforms.
3.The highest point of the mountain is known as the peak.
Choose the correct answer using the codes given below.
(a) land 2
(b) 1,2 and 3
(c) 2 and 3
(d) 1 and 3
Answer:
(b) 1, 2 and 3

Question 2.
Consider the following statements.
Statement I: Ferdinand Magellan named the ocean Pacific, meaning calm.
Statement II: Ferdinand Magellan was a Spanish navigator.
Which of the statement(s) is/are true?
(a) I is true; II is wrong
(b) I is wrong; II is true
(c) Both the statements are true
(d) Statements I and II are wrong.
Answer:
(c) Both the statements are true

F. Answer in a word

Question 1.
A broad inlet of the sea where the land curves inwards.
Answer:
Bay

Question 2.
A relatively levelled area of the earth’s surface with a gentle slope.
Answer:
plain

Question 3.
The Plains of river Cauvery and Vaigai are found in the State of
Answer:
Tamil Nadu

Question 4.
The eroded materials getting deposited on the low-lying areas.
Answer:
Deposition

Question 5.
The Strait which connects the Atlantic ocean to the Mediterranean Sea
Answer:
Strait of Gibraltar

G. Answer in brief.

Question 1.
Why do we see the most part of the globe in blue colour?
Answer:
We see the most part of the globe in blue colour is because of a large part of the Earth is covered by water which occupies 71 percent and land which occupies only 29 percent of the Earth’s surface.

Question 2.
Mention some of the hill stations in Tamil Nadu.
Answer:

1. Udhagamandalam
2. Kodaikanal
3. Kolli hills
4. Yercaud and Yelagiri

Question 3.
Mention some of the hill stations found in Tamil Nadu.
Answer:
Udaga mangalam, Kodaikanal, Kolli hills, Yercard and Yelagiri are some of the hill stations found in Tamil Nadu.

Question 4.
Write a short note on Third-order landforms.
Answer:

1. Third-order landforms are formed on mountains, plateaus, and plains by erosional and depositional activities of rivers, glaciers, winds, and waves.
2. Valleys, beaches, and sand dunes are examples of third-order landforms.

Question 5.
What is Oceanography?
Answer:
The study of oceans is called Oceanography.

Question 6.
Mention the islands located in the Pacific Ocean?
Answer:
Indonesia, the Philippines, Japan, Hawaii, New Zealand, are some of the islands located in the Pacific Ocean.

H. Distinguish between.

Question 1.
A continent and ocean
Answer:
Continent

1. The vast land masses are called continents.
2. Example: Asia, Africa, Europe.

Ocean

1. Oceans are a vast expanse of water.
2. Example: Pacific Ocean, Atlantic Ocean.

Question 2.
The Pacific Ocean and an Atlantic Ocean Ans
Answer:

Pacific

1. The largest and deepest ocean.
2. It spreads out 168.72 million sq. km
3. The Bering Sea, The China sea, the Sea of Japan, the Tasman Sea, Philippines Sea are some of the marginal seas.

Atlantic

1. Second largest ocean
2. It spreads about 85.13 million sq. km
3. Mediterranean Sea, The Caribbean Sea, the Gulf of Mexico, the North Sea, the Gulf of Guinea are important marginal seas.

I. Answer the following questions in detail.

Question 1.
Write a note on the Third order of landforms.
Answer:

1. The Third order landforms are formed on the mountains, plateaus and plains mainly by erosional and depositional activities of rivers, glaciers, winds and waves.
2. Valleys, beaches, and sand dimes are some examples of Third-order landforms.
3. Erosion is the process of removal of surface material from the Earth’s crust.
4. The eroded materials are transported and deposited in the low lying areas.
5. This process is called a deposition.

Question 2.
Bring out the features of the Indian Ocean.
Answer:

1. The Indian Ocean is the third-largest ocean on the Earth’s surface.
2. It covers an area of 70.56 million sq. km.
3. It is triangular in shape.
4. It is bounded by Africa in the west, Asia in the North and Australia in the East.
5. The Andaman and Nicobar Islands, Lakshadweep, Maldives, Sri Lanka, Mauritius and the Reunion Islands are some of the islands present in the Indian Ocean.
6. The Java trench is the deepest point in the Indian Ocean