TN Board Class 6 Geography Unit 2 Lands and Oceans

If you are looking for Tamil Nadu Board Class 6 Geography Unit 2 Lands and Oceans then you are at the right place. Here we are providing solutions as well as additional QA / Important Notes.

 

Choose the correct answer

1. Which of the following is the smallest ocean on Earth?

• The Pacific Ocean
• The Indian Ocean
• The Atlantic Ocean
• The Arctic Ocean

 

2. The Malacca Strait connects

• The Pacific and Atlantic Oceans
• The Pacific and Southern Oceans
• The Pacific and Indian Oceans
• The Pacific and Arctic Oceans

 

3. Which of the following oceans is the busiest ocean?

• The Pacific Ocean
• The Atlantic Ocean
• The Indian Ocean
• The Arctic Ocean

 

4. The frozen continent is

• North America
• Australia
• Antarctica
• Asia

 

5. A narrow strip of water that connects two large water bodies

• A Strait
• An Isthmus
• An Island
• A Trench

 

 

Fill in the blanks

1. The world’s largest continent is ………….[Asia]
2. ………..is the mineral rich plateau in India.[Chotanagpur]
3. The largest ocean is …………[Pacific Ocean]
4. Deltas are ………..order landforms.[Third]
5. The Island continent is ……..[Australia]

 

 

Circle the odd one out

1. Africa, Europe, Australia, Sri Lanka (Sri Lanka is a country, others are continents)
2. The Arctic Ocean, the Mediterranean Sea, the Indian Ocean, the Atlantic Ocean (the Mediterranean Sea is a sea, others are oceans)
3. Plateau, Valley, Plain, Mountain (Valley is typically a third order landform, others are second order)
4. The Bay of Bengal, the Bering Sea, the China Sea, the Tasman Sea (The Bay of Bengal is a bay, others are seas)
5. The Andes, the Rockies, the Everest, the Himalayas (Everest is a peak, others are mountain ranges)

 

Match the following

1. The South Sandwich Trench – a) The Atlantic Ocean
2. The Milwaukee Trench – b) The Southern Ocean
3. The Mariana Trench – c) The Indian Ocean
4. The Eurasian basin – d) The Pacific Ocean
5. The Java Trench – e) The Arctic Ocean

 

Answers:

• The South Sandwich Trench – b) The Southern Ocean
• The Milwaukee Trench – a) The Atlantic Ocean
• The Mariana Trench – d) The Pacific Ocean
• The Eurasian basin – e) The Arctic Ocean
• The Java Trench – c) The Indian Ocean

 

i) Consider the following statements

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.

1. 1 and 3
2. 2 and 3
3. 1, 2 and 3
4. 2 only

 

1. ii) Which of the following statement (s) is/are true?

Statement I: Mountains are second order landforms.

Statement II: The Mariana Trench is the deepest trench in the world.

1. I is true; II is wrong
2. I is wrong; II is true
3. Both the statements are true
4. Statements I and II are wrong.

 

Answer in a word

 

Which is the highest plateau in the world?

Tibetan Plateau

 

Name a second order landform.

Mountain

 

Which ocean is named after a country?

Indian Ocean

 

Name the island located in the Arabian Sea.

Lakshadweep

 

What is the deepest part of the ocean called as?

Trench

 

Answer in brief

 

What is a continent?

A continent is one of the Earth’s large continuous landmasses. There are seven continents on Earth: Asia, Africa, North America, South America, Antarctica, Europe, and Australia.

 

Name the continents which surround the Atlantic Ocean.

The continents that surround the Atlantic Ocean are North America, South America, Europe, and Africa.

 

What are oceans?

Oceans are vast and continuous bodies of saltwater that cover about 71% of the Earth’s surface. There are five main oceans: the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Southern Ocean, and the Arctic Ocean.

 

List out the names of continents according to their size.

The continents in order of size from largest to smallest are:

• Asia
• Africa
• North America
• South America
• Antarctica
• Europe
• Australia

 

Name the oceans which surround North America and South America.

The oceans that surround North America are the Atlantic Ocean, the Pacific Ocean, and the Arctic Ocean.

The oceans that surround South America are the Atlantic Ocean and the Pacific Ocean.

 

Distinguish Between

A Mountain and a Plateau:

Mountain	Plateau
Rises 600 meters or more above surroundings	Elevated flat area, can be a few hundred to several thousand meters above surroundings
Steep slopes	Generally bounded by steep slopes
Has a distinct peak	Generally flat-topped, known as tableland
Often formed by tectonic forces such as volcanic activity or the collision of tectonic plates	Formed by various geological processes, including volcanic activity, uplift, and erosion
Himalayas, Rocky Mountains, Andes	Tibetan Plateau, Deccan Plateau, Chotanagpur Plateau

 

An Ocean and a Sea:

Ocean	Sea
Vast and extensive, covering large areas	Smaller compared to oceans, often partially enclosed by land
Generally deeper than seas	Shallower compared to oceans
Open and continuous body of salt water	Often located where the land and ocean meet, may be fully or partially enclosed by land
Pacific Ocean, Atlantic Ocean, Indian Ocean	Mediterranean Sea, Caribbean Sea, South China Sea
Supports diverse and vast ecosystems	Supports diverse ecosystems but on a smaller scale compared to oceans
Major global navigation routes	Important for regional navigation and trade

Answer the following questions

 

Mention the classification of landforms.

Landforms are classified into three orders based on their size and formation processes:

First order landforms: These include the largest features on Earth, such as continents and oceans.

Second order landforms: These are large but smaller than first-order landforms, including mountains, plateaus, and plains.

Third order landforms: These are smaller features formed mainly by erosional and depositional activities, such as valleys, beaches, and sand dunes.

 

Write a note on plateaus.

Plateaus are elevated flat areas that have a relatively level surface bounded by steep slopes. They can be a few hundred to several thousand meters above sea level. Plateaus are formed by various geological processes, including volcanic activity, uplift, and erosion. They often have rich mineral deposits, making them significant for mining activities. The Tibetan Plateau, known as the ‘Roof of the World,’ is the highest plateau globally.

 

Plains are highly populated. Give reasons.

Plains are highly populated due to their flat and fertile land, which is ideal for agriculture. The availability of water from rivers and their tributaries makes them suitable for irrigation and farming. Additionally, plains have good transportation networks and infrastructure, making them convenient for habitation and trade. The favorable living conditions and economic opportunities attract large populations to these areas.

 

Give the important features of the Pacific Ocean.

The Pacific Ocean is the largest and deepest ocean on Earth, covering about one-third of the Earth’s total surface area. It is bounded by Asia and Australia to the west and North and South America to the east. The ocean contains the Mariana Trench, the deepest point on Earth at 10,994 meters. It also features the Pacific Ring of Fire, a major area of volcanic activity. The Pacific Ocean has numerous marginal seas and islands, including the Philippines, Japan, and Indonesia.

 

Write about the importance of oceans.

Oceans play a crucial role in regulating the Earth’s climate by absorbing solar radiation and distributing heat around the globe. They are vital for the global water cycle, providing the majority of the planet’s precipitation through evaporation. Oceans support a vast diversity of marine life, which is essential for global biodiversity. They are also a major source of food, energy, and minerals, and facilitate international trade and transportation. Additionally, oceans offer recreational opportunities and contribute to the cultural and economic well-being of coastal communities.