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Read the passage and choose the best option to answer each of the following questions.
Wind is a form of solar energy. Winds are caused by the uneven heating of the atmosphere by the sun. Wind flow patterns are changed by the earth’s terrain, bodies of water, and vegetative cover. This wind flow, or motion energy, when “harvested” by modern wind turbines, can be used to generate electricity. Wind turbines are available in a variety of sizes, and therefore power ratings. The largest machine has blades that span more than the length of a football field, stands 20 building stories high, and produces enough electricity to power 1,400 homes. A small home-sized wind machine has rotors between 8 and 25 feet in diameter and stands upwards of 30 feet and can supply the power needs of an all-electric home or small business, utility scale turbines range in size from 50 to 750 kilowatts. Single small turbines, below 50 kilowatts, are used for homes, telecommunications dishes, or water pumping.
Câu hỏi:What is the reason for the existence of wind?
- A. atmosphere heated unevenly
- B. wind flow
- C. motion energy
- D. wind turbines
Lời giải tham khảo:
Đáp án đúng: A
Nguyên nhân tồn tại của gió là gì?
A. khí quyển nóng lên không đều
B. luồng gió
C. năng lượng chuyển động
D. tua-bin gió
Thông tin: Winds are caused by the uneven heating of the atmosphere by the sun.
(Gió được gây ra bởi sự nóng lên không đều của bầu khí quyển bởi mặt trời.)
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- What is the reason for the existence of wind?
- Which of the following is NOT mentioned as a factor affecting the wind direction?
- What is the height of the largest wind turbines?
- A small home-sized wind machine can produce enough power for_________.
- How much power do single small turbines generate?
