5.2   Text Questions :

Answer the following questions briefly :

1. What are the four major domains of the earth?
The four major domains of the earth are Lithosphere, Atmosphere, Hydrosphere and Biosphere.

2. Name the major continents of the earth.
The major continents of the earth are Asia, Europe, Africa, North America, South America, Australia and Antarctica.

3. Name the two continents that lie entirely in the Southern Hemisphere
Australia and Antarctica are the two continents that lie entirely in the Southern Hemisphere.

4. Name the different layers of atmosphere.
Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere.

5. Why is the earth called the ‘blue planet’?
The earth is called the ‘blue planet’ because more than 75% of the earth is covered with water.

6. Why is the Northern Hemisphere called the ‘Land Hemisphere’?
The Northern Hemisphere is called the Land Hemisphere because the greater part of the landmass lies in the Northern Hemisphere.

7. Why is the Biosphere important for living organisms?
Ans: The Biosphere is important for living organisms because life exists here due to the presence of 3 major components (land, air and water) that is required for life to exist .

Tick the correct answers :

1. The mountain ranges that separates Europe from Asia is _________ .
i) The Andes                  ii) The Himalayas                    iii)  The Urals  √

2. The continents of North America is linked to South America by _________ .
i) Isthmus √                    ii) Strait                                       iii) Canal

3. The major constituents of atmosphere by percent is _________ .
i) Nitrogen √                  ii) Oxygen                                   iii) Carbon dioxide

4. The domain of the earth consisting of solid rocks is ________ .
i) The Atmosphere          ii) The Hydrosphere           iii) The Lithosphere √

5. Which is the largest continent?
i) Africa                          ii) Asia √                                iii) Australia

Answers :
1. The Urals           2. Isthmus              3. Nitrogen             4. The Lithosphere            5. Asia

Fill in the blanks :

1.  The deepest point on the earth is_______.

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 _____________.

Answers :
1.  Mariana Trench           2.  Indian              3.  Biosphere              4.  Eurasia                 5.  Everest

Map Skills        (MAP OF INDIA)

1.  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.