Page 62 - Social Science 2_flatten

3. Wells are used to pull out underground water.

4. Dams are responsible for causing floods.
5. It rains heavily in the hilly areas.

D. Match the following.
1. When water changes into vapour a. Collection

and goes into the air :

2. Water drops fall from the sky : b. Condensation

3. Water rejoins the sea : c. Precipitation

4. Vapour becomes drops : d. Evaporation

E. Answer the following ques ons.

1. Why do we need water?
2. Name some natural and man-made sources of water.

3. Where do most of the rivers of our country originate from?

4. What are dams and why they are also called multipurpose projects?

5. Where can we find tanks for irrigation in India?

6. Why do people build tanks?
7. Why should we drink clean water?

Activity Hub Art and Cra Integra on

1. On an outline map of India, show any five states with highest rainfall.

2. Draw pictures of a canal, a well, a tube well and a tank. Also label them properly.

Life Skills Cri cal Thinking

1. Water treatment using photocatalysis has gained prominence in recent years due
to its efficiency in trea ng contaminated water. The technology u lises

photocatalyst and ultraviolet (UV) rays to remove toxic substances from water.

2. Find out more about the given Government schemes for Water Management
1. Jal Shak Abhiyan

2. The Atal Bhujal Yojana

3. Sahi Fasal
4. Pradhan Mantri Krishi Sinchayee Yojana

5. The Model Building Bye-Laws (MBBL) 2016

62 SST-4