Renewable Energy Sources and Challenges

The video tutorial explores renewable energy sources, including solar, tidal, geothermal, hydropower, and wind energy. It discusses the benefits and drawbacks of each source, emphasizing the need for sustainable and affordable energy solutions. The tutorial also poses questions to encourage discussion on the importance of renewable energy and its impact on the environment.

What percentage of the world's energy is currently powered by fossil fuels?

• 80%

• 60%

• 50%

• 70%

Which of the following is a drawback of solar energy?

• High maintenance cost

• Limited sunlight availability

• Harmful emissions

• Complex installation

Why is solar energy considered renewable?

• It is derived from wind

• It is derived from water

• It is derived from the earth's core

• It is derived from the sun

What is a major benefit of tidal energy?

• No environmental impact

• Unlimited resource availability

• Easy to install

• Low initial cost

What is a significant cost factor for tidal energy?

• Maintenance

• Labor

• Initial setup

• Fuel

What is the primary source of geothermal energy?

• Sun

• Wind

• Earth's core

• Water

Which of the following is a potential drawback of hydropower?

• Ecosystem disruption

• High fuel cost

• Resource depletion

• High emissions

Which energy source uses the heat from the Earth's core?

• Hydropower

• Wind

• Solar

• Geothermal

What is a common issue associated with wind turbines?

• High fuel consumption

• Bird fatalities

• Water pollution

• Excessive noise

What is a visual drawback of wind energy?

• It causes air pollution

• It is visually unappealing

• It is noisy

• It requires a lot of space