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The diagrams show a structure that is used to generate electricity from wave power.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
Generating electricity from sea waves

ESSAY:
The two diagrams illutrate the process that turns wave power into electricity.
Overall, there are two main stages of creating electricity from sea waves, using a machine set up on a cliff.
The process involves a structure which is located on the side of a cliff or a sea wall. The machine is constructed with a large chamber which plunges one end into the ocean, the other tip leads to a vertical column opening to the atmosphere. In the first stage, rising waves are forced into the chamber, pushes the air into the column. While the air is flown into the atmosphere, a turbine inside the column is operated and directly creates electricty.
When the waves change their direction, the chamber runs out of ocean water, which generates energy to absorb air back into the machine. The turbine rotates again in the same direction as when the air goes out of the column. Electricity is also generated during this flow.

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Grammar: https://IELTSPLANET.INFO/COURSE/IVY-GRAMMAR/
Writing: https://IELTSPLANET.INFO/COURSE/PHUONG-PHAP-DON-GIAN-VIET-BAI-IELTS-WRITING-8-0/

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