Water Resources of India class 4 Questions and Answers

The Water Resources of India Class 4 (SST)


Introduction:
India is home to diverse water resources, including rivers, lakes, ponds, and groundwater.
Rainwater - India's primary source of freshwater:
Rain is the main source of freshwater in India, and the country receives an average annual rainfall of 1170mm. It is essential for agriculture, drinking water, and industrial use.
India's freshwater resources:
India has 17% of the world's population but has only 1% of the world's usable freshwater resources in the form of rivers, lakes, and ponds. The major rivers in India, such as Ganges, Brahmaputra, and Indus, are the primary source of water for agriculture, drinking, and industrial use.
Initiatives to conserve and manage water resources:
The government of India has implemented several initiatives to conserve and manage water resources, including rainwater harvesting, watershed development, etc. These initiatives aim to promote sustainable management of water resources and ensure access to safe and affordable drinking water for all.
Conclusion:
India's water resources face significant challenges, including water scarcity, pollution, and depletion of groundwater resources. . The government, civil society organizations, and individuals must work together to conserve, manage and sustainably use the country's water resources for the benefit of all.
Remember The Points
+ Water is essential for all living beings.
+ Rain is the main source of fresh water.
+ There is only 3% fresh water on the earth. Rest is salty.
+ 2% of the fresh water is in the form of ice and snow.
+ The 1% usable fresh water is in the form of rivers, lakes and ponds.
+ We get underground fresh water from wells, tube wells, bore wells and hand pumps.

A. Tick[tikbox] the correct answer.

1. What percentage of the earth's surface is covered with water?
a. 90% [box] b. 80% [box] c. 75% [tikbox]
2. Our main source of fresh water is-
a. sea [box] b. Well [box] c. rain [tikbox]
3. Our government has set up canals for-
a. Fishing[box] b. Irrigation [tikbox] c. producing electricity [box]
4. The rivers that flow throughout the year are called-
a. Perennial [tikbox] b. Non-perennial [box] c. none of these [box]

Fill in the blanks.

1. Two percent of fresh water is in the form of snow and ice.
2. Only 1 percent of fresh water is available for our use.
3. Chilika Lake is the largest lake of Odisha. dam
4. The wall that holds back the flow of water is called dam.
5. The rainy season in India lasts for 3 or 4 months.

Short answer questions.

Where do the villagers get drinking water from?
Villagers get drinking water from wells, tanks. and handpumps.
What is sluice gate?
Sluice gates are special gates in a dam generally used to control the flow of water.
Name two government provided ways of irrigation.
Dams and Canals are two government provided ways of irrigation.
Give two uses of dams.
Dams are used for many purposes. Two of them are i) to produce electricity. - and fish breeding.
What percentage of the water available on the earth is salty?
97% of the water available on the Earth is salty.

Answer the following Questions

What is an underground water reservoir ?

Underground water reservoir is the inside part of Earth where a large quantity of rain water gets collected by trees and plants.

Why is tank or pond irrigation popular in South India?

Tank or Pond irrigation is popular in South India because the ground is hard there and therefore it is difficult to dig wells.

What is a canal? Name the canal that brings Sutlej water to Rajasthan..

Canals are small channels which are dug to divert water from the rivers to the fields.
Indira Gandhi Canal or Rajasthan Canal is the canal that brings the Sutlej water to
Rajasthan.

What is a dam? Why are dams also called multipurpose project?

A dam is a wall built across a river to hold back the flow of water.
Dams are not only used to hold back the flow of water but they are also used for many other important purposes too such as production of electricity, fish breeding etc. that is why dams are also called multi purpose projects

What is rainwater harvesting? How can we easily save rain water at home ?

Rainwater harvesting is a good method of saving rainwater.
We can easily save rain water in big tanks and buckets at our home.