The earth is the only planet which has life. The surface of the earth is a complex zone where the three main components of the environment meet, overlap and interact. There are four major domains of the Earth, and they are lithosphere, atmosphere, hydrosphere and biosphere. The atmosphere is divided into four layers based on composition, temperature and other properties. The different layers of the atmosphere are the troposphere, stratosphere, mesosphere, thermosphere and exosphere.
NCERT Solutions for Class 6 Geography Chapter 4 Maps
NCERT Solutions for Class 6 Geography Chapter 5 – Major Domains of the Earth
1. Answer the following questions briefly.
(a) What are the four major domains of the earth?
(b) Name the major continents of the earth.
(c) Name the two continents that lie entirely in the Southern Hemisphere.
(d) Name the different layers of the atmosphere.
(e) Why is the earth called the ‘blue planet’?
(f) Why is the Northern Hemisphere called the Land Hemisphere?
(g) Why is the Biosphere important for living organisms?
Answer 1.
(a) The four major domains of the Earth are the Lithosphere, Atmosphere, Hydrosphere and Biosphere.
(b) There are 7 major continents of the earth. They are as follows:
- Asia
- Europe
- Africa
- North America
- South America
- Australia
- Antarctica
(c) Two continents that lie entirely in the southern hemisphere are Australia and Antarctica.
(d) The different layers of the atmosphere are listed below:
- Troposphere
- Stratosphere
- Mesosphere
- Thermosphere
- Exosphere
(e) The earth is called the blue planet because 71% of the earth is covered with water, and the remaining 29% makes up the land.
(f) The northern hemisphere is called the land hemisphere because a major part of the landmass lies in it.
(g) The Biosphere is important for living organisms because life exists here due to the presence of 3 major components, land, air and water.
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 per cent 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) the Lithosphere
(e) Which is the largest continent?
(i) Africa (ii) Asia (iii) Australia
Answer 2.
- (iii) the Urals
- (i) an Isthmus
- (i) Nitrogen
- (iii) the Lithosphere
- (ii) Asia
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3. Fill in the blanks.
(a) The deepest point on the earth is _____________ in the Pacific Ocean.
(b) The _____________ Ocean is named after a country.
(c) The _____________ is a narrow contact zone of land, water and air that supports life.
(d) The continents of Europe and Asia together are known as _____________.
(e) The highest mountain peak on the earth is _____________.
Answer 3.
(a) The deepest point on the earth is the Mariana Trench in the Pacific Ocean.
(b) The Indian Ocean is named after a country.
(c) The Biosphere is a narrow contact zone of land, water and air that supports life.
(d) The continents of Europe and Asia together are known as Eurasia.
(e) The highest mountain peak on the earth is Mount Everest.