Water Resources: Distribution, Types, and Environmental Impact

The video discusses the distribution, types, and usage of water resources, highlighting the scarcity of freshwater. It explains the classification of water resources into surface, groundwater, and saltwater, and details the global and Indian usage patterns, emphasizing irrigation. The video also addresses the overexploitation of water resources, leading to issues like land subsidence, lowering of water tables, and pollution, exacerbated by climate change and population growth.

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

• 71%

• 50%

• 90%

• 85%

Which type of water resource is primarily found in glaciers and ice caps?

• Groundwater

• Surface water

• Saltwater

• Freshwater

What is the term used for the body of porous rock filled with groundwater?

• Well

• Basin

• Aquifer

• Reservoir

Which ecosystem is characterized by still or stagnant water?

• Wetlands

• Estuarine

• Lentic

• Lotic

What is the primary use of freshwater globally?

• Industrial use

• Irrigation

• Domestic use

• Recreation

Which country has the highest volume of freshwater resources?

• India

• Russia

• Canada

• Brazil

What is a major threat to water resources caused by human activity?

• Water scarcity

• Natural disasters

• Abundant rainfall

• Increased biodiversity

What environmental issue is caused by excessive groundwater extraction?

• Land subsidence

• Flooding

• Soil erosion

• Increased rainfall

What happens to the water table when groundwater is over-exploited?

• It disappears

• It lowers

• It remains stable

• It rises

What is a consequence of reduced surface water supplies?

• Increased biodiversity

• Improved water quality

• Diminished water levels

• Enhanced irrigation