Page 119 - SST Class 08

7. _____________ is not a method of conservation of water resource.
(a) multipurpose projects (b) judicious use of water (c) pollution of water bodies

8. _____________ is a multipurpose project.
(a) Koyna (b) Kosi (c) Hirakud

B. Match the following :
1. Parent rock u u 2%

2. Shelter belts u u Layer of soil below the topsoil
3. Subsoil u u Original rock from which soil is formed
4. Soil formation u u Longest dam
5. Hirakud u u Soil conservation

6. Freshwater u u Weathering

C. Fill in the blanks :
1. Use of excessive fertilizers is _____________ for the land.
2. Topsoil refers to the _____________ layer of the earth.

3. The best soil to grow cotton is _____________ .
4. We find _____________ soil in the river valleys.
5. The red colour of the red soil is due to the presence of _____________ .

6. Protecting the soil from various agents of erosion is called _____________ .
D. Write T for true and F for false statements :

1. Shelter belts check the force of wind and water.
2. The mountain soil is rich in humus.

3. Use of excessive fertilizers is good for soils and crops.
4. Black soil is very good to grow cotton and sugar cane.
5. The Ganga, Yamuna and Brahmaputra are the perennial rivers of India.
6. The treated water can be used for domestic purpose.

E. Answer in one word or phrase :

1. How much land is not suitable for living?
2. What is land use pattern?
3. Which factors affect soil formation?

4. What is strip cropping?
5. How much area of earth’s surface is covered with water?
6. What do you mean by conservation of water?

F. Answer the questions in brief :
1. Why land is the most important resource for humans?

2. What are the main types of soils found in India?
3. What do you mean by contour ploughing?
Land, Soil and Water Resources
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