RBSE Class 6 Social Science Important Questions Geography Chapter 5 Major Domains of the Earth

Rajasthan Board RBSE Class 6 Social Science Important Questions Geography Chapter 5 Major Domains of the Earth  Important Questions and Answers. 

RBSE Class 6 Social Science Important Questions Geography Chapter 5 Major Domains of the Earth

Multiple Choice Questions

Question 1. 
In which continent is the world’s largest river located?
(a) North America 
(b) South America
(c) Africa 
(d) Europe.
Answer: 
(c) Africa 

 

Question 2. 
Bering Strait joins the Arctic Ocean to
(a) the Pacific Ocean 
(b) the Atlantic Ocean 
(c) the Indian Ocean 
(d) None of these.
Answer: 
(a) Pacific Ocean 

Question 3. 
The height of Mount Everest is
(a) 8,842 m 
(b) 8,846 m
(c) 8,848 m 
(d) 8,849 m. 
Answer: 
(c) 8,848 m 

Question 4. 
The domain of water is known as
(a) Lithosphere 
(b) Hydrosphere 
(c) Atmosphere 
(d) All of these.
Answer: 
(b) Hydrosphere 

Question 5. 
The largest continent of the world is
(a) Europe 
(b) Asia
(c) Africa 
(d) North America
Answer: 
(b) Asia

Fill in the blanks

Question 1. 
Ninety percent of air is found within ................ km from earth’s surface.
Answer: 
30

Question 2 
 ................ is the largest continent while is ................  the smallest continent.
Answer: 
Asia, Australia

Question 3. 
Moving air is called  ................ 
Answer: 
wind

Question 4. 
Atmospheric layer keep the Earth ................ during night.
Answer: 
warm

Question 5. 
The Hydrosphere covers nearly ................ per cent of the earth’s surface.
Answer: 
71.

True/False

Question 1. 
The African continent is the third-largest after Asia.
Answer: 
False

Question 2. 
The solid sphere of rocks is called the lithosphere. 
Answer: 
True

Question 3. 
The domain of life is called the hydrosphere.
Answer: 
False

Question 4. 
The sphere of air that surrounds the Earth is known as the atmosphere.
Answer: 
True

Question 5.
The shape of the Pacific Ocean is almost triangular.
Answer: 
False

 

Match the columns 

Column A	Column B
1. Air	(a) Lithosphere
2. Water	(b) Biosphere
3. Rocks	(c) Atmosphere
4. Life	(d) Hydrosphere
5. The icy continent is	(e) Antarctica

Answer:

Column A	Column B
1. Air	(c) Atmosphere
2. Water	(d) Hydrosphere
3. Rocks	(a) Lithosphere
4. Life	(b) Biosphere
5. The icy continent is	(e) Antarctica

Very Short Answer Type Questions

Question 1.
In which hemisphere does Asia lie?
Answer: 
Asia lies in the Eastern Hemisphere.

Question 2. 
Name the domain of the Earth which consists of solid rocks.
Answer: 
The lithosphere consists of solid rocks.

Question 3. 
Name the domain which consists of plant and animal kingdoms.
Answer: 
The biosphere consists of plant and animal kingdoms.

Question 4. 
Mention the different forms in which we find water on the Earth.
Answer: 
Water is found in three forms running water (oceans, seas, lakes, rivers, and ponds), solid form (ice and snow), and gaseous form (water vapor).

Question 5. 
Which two gases are found in abundance in the atmosphere?
Answer: 
Nitrogen and oxygen are found in abundance.

Question 6. 
Which is the busiest ocean from the commercial point of view?
Answer: 
The Atlantic Ocean is the busiest ocean from a commercial point of view.

Question 7. 
What are the three movements of the ocean water?
Answer: 
The three movements of ocean water are waves, tides, and ocean currents.

Question 8. 
Name the two oceans that are connected by the Bering Strait.
Answer: 
The Arctic Ocean and the Pacific Ocean are connected by the Bering Strait.

Question 9. 
Which ocean is called as the ‘S-shaped ocean?
Answer: 
The Atlantic Ocean is called as the ‘S-shaped ocean.

Question 10.
Which is the smallest continent? Why it is called as the island continent?
Answer: 
Australia is the smallest continent in the world. It is also called as the ‘Island continent’ because it is surrounded by water on all sides.

Question 11. 
Which is the largest river in the world? 
Answer: 
Amazon is the largest river in the world. 

Question 12. 
Name the Indian research stations located in Antarctica.
Answer: 
Maitri and Dakshin Gangotri are two Indian research stations located in Antarctica. .

Question 13. 
What do you understand by the term ‘Eurasia’?
Answer: 
The continents of Europe and Asia considered as a whole and together they are called as ‘Eurasia’.

Question 14. 
Why Mariana trench is famous for?
Answer: 
It is famous for being the deepest point of the Earth in the Pacific Ocean.

 

Question 15. 
Why is life possible on Earth?
Answer: 
Life is possible on the Earth because the life-sustaining elements of land, water and air are present on the Earth.

Question 16. 
How high is Mt. Everest, the World's highest peak above sea level?
Answer: 
The World's highest mountain peak Mt. Everest is 8,848 meters above sea level.

Question 17. 
Which is the longest river in the world?
Answer: 
Nile River.

Question 18. 
Define wind.
Answer: 
Meaning air is known as wind.

Short Answer Type Questions

Question 1. 
What is meant by Lithosphere? How is it divided?
Answer: 
The solid portion of the Earth’s surface is called as Lithosphere, where ‘litho’ in Greek means ‘rock’. Rocks form the solid crust of the Earth and the thin layer of soil that contains nutrient elements which sustain organisms. It is divided into two main divisions continents and oceans

Question 2. 
Why is the atmosphere called as ‘a Blanket of air’?
Answer: 
The atmosphere is called as a ‘blanket of air’ because it surrounds the Earth. Living beings breathe in oxygen from the atmosphere. It also maintains even temperature both diming day and night. It shields the earth from the strong ultraviolet rays of the Sun due to the presence of ozone gas.

Question 3. 
Give an account of the composition of the atmosphere.
Answer: 
The atmosphere is composed mainly of nitrogen and oxygen. Nitrogen (78%), Oxygen (21%) and Argon, Carbon dioxide and others comprise 1% by volume. At lower levels water vapor and dust particles are also present in air.

Question 4. 
What is a plateau? Name the two important plateaus of the world.
Answer: 
A plateau is a large area of land rising much above the surrounding areas. A plateau may have steep slopes on one or more sides. Uie hight of the plateau may range from 400 meters to several thousand meters above sea level. Deccan Plateau of India and the plaleau of Africa arc two important examples.

Question 5. 
Write a short note on Antarctica.
Answer: 
Antarctica lies completed in the southern hemisphere is a huge continent. The south pole lies almost at the centre of this continent. N early 95 percent of the continent is covered by ice and snow throughout the year. Because of this, it is also called as the ‘White Continent. There are no permanent human settlements here.'Many countries have set up their research station here.

Question 6. 
Differentiate between an Isthmus and a Strait. 
Answer:

An Isthmus	A Strait
A narrow strip of land joining two landmasses is an Isthmus.	A narrow passage of water connecting two large water bodies like seas and oceans is a strait.
E.g. Isthmus of Panama joining continents, North and South America.	E.g. Palk Strait joining, India and Sri Lanka.

Question 7.
Define global warming. State the factors responsible for it.
Answer: 
Increasing levels of carbon dioxide cause an increase in the temperature. This is called as Global Warming. The following are few major factors responsible for it:
(1) The burning of fossil fuels in cars, factories and electricity production. They produce carbon dioxide, which is the most common gas responsible for global warming.

1. Methane gas is released from landfills and fertilizers.
2. Gases are released from refrigeration and industrial processes.
3. Deforestation also increases the level of C02 in the atmosphere.

Question 8. 
Write any four characteristics of the continent of Africa.
Answer: 
Africa

• Africa is the second-largest continent after Asia.
• Africa is the only continent through which the Tropic of Cancer, the Equator and the Tropic of Capricorn pass.
• The Sahara Desert, the World’s largest hot desert, is located in Africa.
• The World’s longest river the Nile, flowers through Africa.

Long Answer Type Questions

Question 1. 
Write short notes on the following:
Answer: 
(a) Asia, (b) Hydrosphere.
(a) Asia: 
It is the largest continent in the world. It covers one-third of the earth’s total land surface and is surrounded by the Arctic Ocean in the north, the Indian Ocean in the south and the Pacific Ocean in the east. It has the highest and the lowest points in the World. Asia is separated from Europe by the Ural Mountains on the west. The combined landmark of Euopre and Asia is called the Eurasia.

(b) Hydrosphere:
71% of the earth is covered with water and this area of the Earth is called as Hydrosphere. Because of it our Earth is also known as the blue planet. 97.2% of the total water is unfit.for human consumption as it is salty. 2.8% of the remaining water is in the form of ice sheets and glaciers or under the ground. A very small percentage around 1% is available as fresh water for human use. Ocean form a major part of hydrosphere. There are five major oceans Pacific, Atlantic, Indian, Arctic and Southern Ocean.

 

Question 2. 
Discuss the importance of biosphere with the help of a diagram.
Answer: 
Life is possible where all the three zones the lithosphere, the hydrosphere and the atmosphere come in contact. This narrow contact zone consist of living organisms is called Biosphere. Biosphere supports about 5-30 million species of plants, animals and other small organisms. All the living organisms including human beings are dependent on this sphere for survival.

Question 3. 
What is atmosphere? Show layers of the atmosphere with a picture. What is the importance of atmosphere?
Answer: 
The Earth is surrounded by a layer of gas called the atmosphere. Layers of the atmosphere is shows in the given picture

1. Atmosphere plays an important role in supporting life system.
2. It provides oxyen for breathing.
3. It acts like a blanket around the Earth.
4. The presence of the atmosphere around the Earth keeps temperature fairly even on Earth.
5. In the absence of atmosphere, days will be extremely hot and nights will be extremely cold.
6. It has nitrogen gas which is essential for plant growth.
7. C02 is used by plants for photosynthesis and this gas also absorbs the heat radiated by earth, thus keeping it warm.

Question 4. 
State three activities of human that are creating intervention in biosphere.
Answer: 
The major three activities of human, creating intervention in biosphere are:

1. Cutting of forests for our need of wood, or clearing land for agriculture may lead to fast removal of soil from slopes leading to soil erosion.
2. The discharge of waste material into lakes and rivers makes the water unsuitable for human use. It also damages other forms of life.
3. Emission from industries, thermal power plants, and automobile vehicles give out carbon dioxide (CO₂) in air. It increases the proportion of this gas in air which has been considered as the chief factor responsible for increase in global temperature called global warming.

Question 5. 
Describe the major domain of the earth, ‘Lithosphere’.
Answer: 
Lithosphere
(1) The solid portion of the earth is called the Lithosphere.
(2) It comprises the rocks of the'Earth’s crust and the thin layers of soil that contain nutrient elements which sustain organisms.
(3) There are two main divisions of the Earth’s surface

• Continents, 
• Ocean basins. The large landmasses are known as the continents and the huge water bodies are called the ocean basins.

(4) The level of seawater remains the same everywhere. The elevation of land is measured from the level of the seas, which is taken as zero. The highest mountain peak Mt. Everest is 8,848 meters above sea level. 
(5) There are seven major continents

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

 

Question 6. 
On the outline map of the world, mark the following:
Europe, Asia, Antarctica, South America, Australia, Indian Ocean, Pacific Ocean, Atlantic Ocean, Ural Mountains and Isthmus of Panama.
Or
Show the major continents and oceans in the outline map of the World.
Or
On the World map, mark the following
(a) Mountain ranges: Himalays, Rocky and Andes Mountains.
(b) Plateau: Tibet
Answer: