5.2 Text Questions :
Answer the following questions briefly :
1. What are the four major domains of the earth?
Ans: The four major domains of the earth are Lithosphere, Atmosphere, Hydrosphere and Biosphere.
2. Name the major continents of the earth.
Ans: 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
Ans: Australia and Antarctica are the two continents that lie entirely in the Southern Hemisphere.
4. Name the different layers of atmosphere.
Ans: Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere.
5. Why is the earth called the ‘blue planet’?
Ans: 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’?
Ans: 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.
