Bên cạnh Bài sửa đề thi 22/8"Many companies nowadays sponsor sport as a way of advertising themselves. Some people think that it is good for the world of sport. Others say there are disadvantages. Discuss both view and give opinion"HS đi thi đạt 7.0 IELTS WRITING, IELTS TUTOR cũng cung cấp luyện đề: Marine renewable energy (ocean energy) IELTS LISTENING SECTION 4.
I. Kiến thức liên quan
II. Đề bài & Audio Luyện đề: Marine renewable energy (ocean energy) IELTS LISTENING SECTION 4
Questions 31-40
Complete the notes below. Write ONE WORD ONLY for each answer.
Marine renewable energy (ocean energy)
Introduction
More energy required because of growth in population and 31…………………..
What’s needed:
- renewable energy sources
- methods that won’t create pollution
Wave energy
Advantage: waves provide a 32………………… source of renewable energy
Electricity can be generated using offshore or onshore systems
Onshore systems may use a reservoir
Problems:
- waves can move in any 33…………………..
- movement of sand, etc. on the 34…………………… of the ocean may be affected
Tidal energy
Tides are more 35…………………. than waves
Planned tidal lagoon in Wales:
- will be created in a 36…………………. at Swansea
- breakwater (dam) containing 16 turbines
- rising tide forces water through turbines, generating electricity
- stored water is released through 37………………….., driving the turbines in the reverse direction
Advantages:
- not dependent on weather
- no 38…………………… is required to make it work
- likely to create a number of 39…………………..
Problem:
- may ham fish and birds, e.g. by affecting 40…………………. and building up silt
Ocean thermal energy conversion
Uses a difference in temperature between the surface and lower levels
Water brought to the surface in a pipe
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