Hydropower Concepts and Applications

The video explores five fascinating facts about hydropower, detailing its historical use, the role of gravity, various sources, Norway's reliance on it, and its environmental impact. Hydropower has been utilized for over 5,000 years, initially for machinery and later for electricity. Gravity aids in energy generation by moving water through turbines. Not all hydropower comes from large dams; rivers and small turbines also contribute. Norway is a leading hydropower producer, storing water to ensure consistent energy supply. While environmentally friendly, hydropower can affect aquatic life, necessitating fish ladders and elevators.

How long have humans been utilizing hydropower?

• Over 5,000 years

• Over 2,000 years

• Over 1,000 years

• Over 3,000 years

What was the primary use of hydropower before 1880?

• Generating electricity

• Powering machinery

• Heating homes

• Irrigating fields

What role does gravity play in hydropower generation?

• It stores energy in batteries

• It evaporates water

• It helps water flow through turbines

• It slows down the water flow

Why are hydroelectric dams often built in mountainous areas?

• To attract tourists

• To avoid flooding

• To reduce construction costs

• To increase water speed and energy

Besides large dams, where else can hydropower be generated?

• Deserts

• Urban areas

• Rivers and small turbines

• Forests

What percentage of Norway's power comes from hydropower?

• 99%

• 75%

• 50%

• 100%

Why is Norway an ideal location for hydropower?

• It has many deserts

• It has numerous valleys and rivers

• It has a large population

• It has a warm climate

What environmental benefit does hydropower offer?

• It uses non-renewable fuels

• It increases air pollution

• It releases carbon dioxide

• It reduces climate change effects

How do hydroelectric dams assist migrating fish?

• By blocking their path

• By providing food

• By offering ladders and elevators

• By changing water temperature

What is a potential environmental challenge of hydroelectric dams?

• They increase fossil fuel use

• They disrupt fish migration

• They cause air pollution

• They deplete water resources