Tiếng Anh 9 Right On Going Green 3

Tiếng Anh lớp 9 Going Green 3

VnDoc xin giới thiệu Soạn Tiếng Anh 9 Right On theo từng Unit các hướng dẫn giải chi tiết cho từng phần trong SGK Tiếng Anh lớp 9 mới, kèm với đó là file nghe giúp các em hiểu bài học dễ dàng hơn.

1. Think: Look at the pictures, the title and the headings in the text. Think of three questions you would like to ask about clean energy. Read the text quickly and see if you can answer them.

(Hãy suy nghĩ: Nhìn vào các hình ảnh, tiêu đề và các tiêu đề trong văn bản. Hãy nghĩ đến ba câu hỏi bạn muốn hỏi về năng lượng sạch. Đọc nhanh văn bản và xem liệu bạn có thể trả lời chúng không.)

Gợi ý đáp án

1. What is clean energy?

Clean energy is a type of energy that is renewable and doesn’t cause air pollution.

2. Why are the headings “Sun”, “Wind” and “Water” mentioned in the text?

These are three types of clean energy we can use.

3. What are the black things in the picture next to the heading “Sun”?

They are solar panels - special pieces of metal - than can change sunlight into electricity.

2. Read the text again. For question (1-4), choose the correct options (A, B, C or D). Listen and check.

(Đọc lại đoạn văn. Với các câu hỏi (1-4), chọn các đáp án đúng (A, B, C hoặc D). Nghe và kiểm tra)

Gợi ý đáp án

3. Read the text again and decide if the statements (1-4) are R (right), W (wrong) or DS (doesn’t say).

(Đọc lại văn bản và quyết định xem các câu (1-4) là R (đúng), W (sai) hay DS (không nói).)

Gợi ý đáp án

Project

4. Collect information about other types of clean energy. Present the information to the class.

(Thu thập thông tin về các loại năng lượng sạch khác. Trình bày thông tin trước lớp.)

Gợi ý đáp án

Let's explore some other types of clean and renewable energy beyond what we've discussed earlier:

1. Hydroelectric Energy:

- How It Works: Hydroelectric power is generated by harnessing the energy of flowing water, typically from rivers or dams. Water flows through turbines, which convert the kinetic energy into electricity.

- Benefits: It's a reliable and mature technology, producing large amounts of electricity. It's also emission-free and doesn't rely on fuel.

- Limitations: Requires specific geographical conditions (rivers, dams). Environmental impact on local ecosystems can be a concern.

2. Geothermal Energy:

- How It Works: Geothermal energy utilizes heat from the Earth's crust. Wells are drilled to access hot water or steam, which drives turbines to generate electricity.

- Benefits: It's a constant and reliable source of energy. Minimal environmental impact and low greenhouse gas emissions.

- Limitations: Limited to specific geothermal regions. Initial setup costs can be high.

3. Biomass Energy:

- How It Works: Biomass energy is derived from organic materials such as wood, agricultural residues, and waste. These materials are burned or converted into biofuels.

- Benefits: Utilizes waste products, reduces landfill waste, and provides an alternative to fossil fuels.

- Limitations: Emissions during combustion can contribute to air pollution. Sustainable sourcing is crucial.

4. Ocean Energy:

- How It Works: Ocean energy includes tidal power (using tides), wave energy (capturing wave motion), and ocean thermal energy (exploiting temperature differences).

- Benefits: Abundant and predictable energy source. Minimal environmental impact.

- Limitations: Developing efficient technologies is still a challenge.

5. Hydrogen Fuel Cells:

- How It Works: Hydrogen fuel cells combine hydrogen and oxygen to produce electricity, emitting only water vapor.

- Benefits: Zero emissions, high energy density, and versatile applications (transport, industry, and power generation).

- Limitations: Production from clean sources is essential. Infrastructure for hydrogen distribution is limited.

Remember, each type of clean energy has its unique advantages and challenges. By diversifying our energy sources, we can create a more sustainable and environmentally friendly future.

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