Lesson 15.
Renewable Energy Sources (再生可能エネルギー源)
▮ Explanatory Text:
Renewable energy sources, such as solar, wind, hydro, and geothermal power, are essential for sustainable development and combating climate change. Unlike fossil fuels, renewable energies provide a clean, inexhaustible, and increasingly cost-effective way to generate electricity and power our lives. Transitioning to renewable energy sources not only helps reduce global greenhouse gas emissions but also enhances energy security, creates jobs, and supports economic growth. This topic explores the different types of renewable energy, their benefits, challenges to widespread adoption, and the role of technology and policy in facilitating the energy transition.
▮ Common Phrases:
1. Solar power harnesses…
2. Wind energy is beneficial because…
3. Hydroelectric power generates electricity by…
4. Geothermal energy relies on…
5. To increase the adoption of renewable energy, we need…
▮ Example Sentences:
1. Solar power harnesses the sun’s energy to produce electricity, making it a clean and abundant energy source.
2. Wind energy is beneficial because it produces no emissions and can significantly reduce reliance on fossil fuels.
3. Hydroelectric power generates electricity by capturing the energy of flowing water, which is renewable and low in greenhouse gas emissions.
4. Geothermal energy relies on the Earth’s internal heat to produce electricity and heating, offering a stable and sustainable energy source.
5. To increase the adoption of renewable energy, we need supportive policies, investments in technology, and public awareness of its benefits.
▮ Questions:
1. What are the main advantages of transitioning to renewable energy sources over traditional fossil fuels?
This question encourages learners to discuss the environmental, economic, and social benefits of renewable energy compared to fossil fuels.
2. What challenges do renewable energy technologies face in terms of scalability and integration into existing energy systems?
Participants explore the technical and economic obstacles to scaling up renewable energy and integrating it with the current energy infrastructure.
3. How can governments and the private sector collaborate to accelerate the adoption of renewable energy?
This prompts a discussion on the roles of policy, funding, and innovation in expanding renewable energy use.
4. What is the potential of emerging renewable energy technologies, such as ocean energy or advanced biofuels?
Learners examine the prospects for less common renewable energy sources and their potential impact on the energy landscape.
5. How does the adoption of renewable energy sources affect energy security and independence for countries?
This question invites discussion on how renewables can enhance national energy security and reduce dependence on imported fossil fuels.
▮ Discussion Instructions:
Select a renewable energy source that interests you or that you believe has significant potential. Discuss its current state, including technological advancements, challenges, and the outlook for its future development. Reflect on how this energy source can contribute to a sustainable and secure energy future.
