Water Resources and Management

The video discusses the critical role of water on Earth, highlighting its distribution, types, and sources. It covers natural and man-made water sources, including oceans, rivers, lakes, ponds, wells, and irrigation systems. The importance of water conservation is emphasized, along with methods like rainwater harvesting. The video also touches on the global significance of water, marked by World Water Day.

What percentage of the Earth's surface is covered by water?

• 71%

• 50%

• 90%

• 85%

Which of the following is NOT a natural source of water?

• Rivers

• Lakes

• Tube wells

• Oceans

What is the primary use of tube wells?

• Navigation

• Recreation

• Fishing

• Irrigation

Which animal is commonly used with the Persian wheel to lift water?

• Elephants

• Camels

• Dogs

• Horses

What is the main purpose of a dam?

• To generate wind energy

• To store rainwater

• To provide drinking water

• To hold back river water

Which of the following is a major dam project in India?

• Three Gorges Dam

• Hoover Dam

• Bhakra Nangal Dam

• Aswan Dam

What is rainwater harvesting?

• A process to collect and store rainwater

• A technique to purify river water

• A method to desalinate ocean water

• A way to increase rainfall

What percentage of water on Earth is fresh and suitable for drinking?

• 5%

• 1%

• 10%

• 3%

When is World Water Day celebrated?

• March 22

• April 22

• June 5

• September 16

What was the theme of World Water Day 2021?

• Water and Climate Change

• Water for All

• Valuing Water

• Clean Water and Sanitation