P1A 14 Multipurpose dams

What are the reasons behind the need for more dams in drainage basins?

• Decreasing global population

• Urban lifestyle preferences

• Reduced water demand

• Climate change mitigation efforts

What are the purposes of multipurpose water schemes?

• Hydroelectric power generation only

• Preventing flooding downstream

• Storing water for irrigation and domestic use

• All of the above

Which dam is considered the largest in the world?

• Three Gorges Dam

• Gezhouba Dam

• Hoover Dam

• Itaipu Dam

What percentage of China's electricity demands was the Three Gorges Dam projected to supply?

• 5%

• 10%

• 15%

• 20%

What potential risk does the Three Gorges Dam face due to its location?

• Earthquakes

• Volcanic eruptions

• Tsunamis

• Hurricanes

How does the Three Gorges Dam impact the river ecosystem downstream?

• Increases water temperature

• Decreases water oxygen levels

• Enhances biodiversity

• Has no effect

What negative consequence resulted from the creation of the reservoir behind the Three Gorges Dam?

• Increased water supply for downstream communities

• Relocation of towns and communities

• Enhanced agricultural productivity

• Reduced tourism opportunities

How does the Three Gorges Dam contribute to reducing air pollution?

• By storing water for irrigation

• By preventing flooding downstream

• By generating hydroelectric power

• By facilitating navigation for ships

Approximately how many people downstream does the Three Gorges Dam protect from flooding?

• 1 million

• 5 million

• 10 million

• 15 million

What potential issue may affect the capacity of the reservoir behind the Three Gorges Dam over time?

• Excessive rainfall

• Land erosion

• Silt accumulation

• Water pollution