Hydroelectric Dams

The video discusses the various uses of water, focusing on hydroelectric power as a clean, renewable energy source. It explains how hydroelectric power plants work, particularly the role of dams and turbines in generating electricity. The video also highlights the environmental drawbacks of dams, such as habitat disruption and the impact on species like the Chinook salmon. Solutions like fish ladders and hatcheries are presented to mitigate these effects. The video concludes by stressing the importance of planning hydroelectric projects responsibly to protect ecosystems.

What is one of the main advantages of hydroelectric power compared to fossil fuels?

• It requires less water.

• It is a renewable source of energy.

• It produces more energy.

• It is cheaper to produce.

What is the primary function of a dam in a hydroelectric power plant?

• To store water for irrigation.

• To control flooding.

• To generate electricity by turning turbines.

• To provide a habitat for fish.

Which dam is mentioned as generating enough electricity to power approximately 750,000 homes?

• Three Gorges Dam

• Hoover Dam

• Itaipu Dam

• Aswan High Dam

What is one of the negative impacts of building dams on local ecosystems?

• They can displace people and animals.

• They reduce water availability.

• They increase air pollution.

• They cause earthquakes.

How do fish ladders help salmon affected by dams?

• They prevent salmon from being caught by fishermen.

• They help salmon grow faster.

• They provide food for the salmon.

• They allow salmon to bypass the dam and continue upstream.