NCERT Solutions for Class-6 Geography Chapter-5 Major Domains of the Earth

NCERT TEXTBOOK EXERCISES

Question 1. Answer the following questions briefly:
1. What are the four major domains of the earth?
2. Name the major continents of the earth.
3. Name the two continents that lie entirely in the Southern Hemisphere.
4. Name the different layers of the atmosphere.
5. Why is the earth called the ‘blue planet’?
6. Why is the Northern Hemisphere called the Land Hemisphere?
7. Why is the Biosphere important for living organisms?
Answer:
1. The four major domains of the earth are—Lithosphere, Atmosphere, Hydrosphere, and Biosphere.
2. Asia, Europe, Africa, North America, South America, Australia, and Antarctica.
3. Australia and Antarctica.
4. Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.
5. More than 71% of the earth is covered with water. Hence, it is known as the ‘blue planet’.
6. The greater part of the landmass lies in the Northern Hemisphere. Hence, it is called the land Hemisphere.
7. The biosphere is important for living organisms because it is here that three essential elements of life (land, water, and air) are found.

Question 2. Tick the correct answers.
(a) The mountain range that separates Europe from Asia is
(i) the Andes
(ii) the Himalayas
(iii) the Urals

(b) The continent of North America is linked to South America by
(i) an Isthmus
(ii) a Strait
(iii) a Canal

(c) The major constituent of the atmosphere by percent is
(i) Nitrogen
(ii) Oxygen
(iii) Carbon dioxide

(d) The domain of the earth consisting of solid rocks is
(i) the Atmosphere
(ii) the Hydrosphere
(iii) Lithosphere

(e) Which is the largest continent?
(i) Africa
(ii) Asia
(iii) Australia

Answer:
(a) → (iii) the Urals
(b) → (i) Isthmus
(c) → (i) Nitrogen
(d) → (iii) Lithosphere
(e) → (ii) Asia.

Question 3. Fill in the blanks:
1. The deepest point on the earth is ………. in the Pacific Ocean.
2. The ……….. ocean is named after a country.
3. The …………. is a narrow contact zone of land, water, and air that supports life.
4. The continents of Europe and Asia together are known as ……..
5. The highest mountain peak on the earth is ………..
Answer:
1. Mariana Trench
2. Indian
3. Biosphere
4. Eurasia
5. Mt. Everest.

INTEXT QUESTIONS

Question 1. Count the squares given in Figure 5.3 below and answer the following:
(a) Name the largest continent.
(b) Which is larger-Europe or Australia?

Answer:
(a) Largest: Asia
(b) Larger: Europe.
Different continents according to their size:
1. Asia
2. Africa
3. North America
4. South America
5. Europe
6. Australia

Question 2. Look at the map of the world (Figure 5.1) of the Textbook. Are all the landmasses connected with one another?
Answer: No, with the following exceptions,
1. Europe, Asia, and Africa are connected with one another.
2. North America and South America are connected with each other.
3. Australia and Antarctica are not connected either with each other or with other landmasses.

Question 3. Could you imagine that the depth of the sea is much more than the highest point?
Answer:
1. The highest point (Height): Mount Everest, 8848 m.
2. The deepest depth of the sea (depth): Mariana Trench, 11022 m. If Mount Everest is put into the Mariana Trench the depth of water on the summit of Mt. Everest will be 2174 m.

Question 4. Three oceans surround this continent (North America). Can you name these oceans?
Answer: Yes.
These oceans are,
1. The Arctic Ocean in the north.
2. The Pacific Ocean in the west.
3. The Atlantic Ocean in the east.

Question 5. Study Figure 5.2 of your Textbook and name the strait between India and Sri Lanka.
Answer: Palk Strait.