4. IELTS process diagram. Generating electricity from wave.

The diagrams below 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.

Model answer by Lifestyle Training Centre – Band 9

The provided process diagram meticulously illustrates the complex mechanisms, components, and steps that are involved in harnessing tidal wave energy, for the production of clean electricity.

As a whole, the process encompasses tidal waves, a conduit chamber, a column, and a turbine that rotates and produces electricity. While the first image showcases how electricity is produced using flood tide, the second, ebb tide.

The Flood tide, channelled through the chamber, as it moves toward the shore, pushes out the trapped air in the connected column, which is built on a cliff or sea wall. Consequently, a turbine located in the middle of the column rotates clockwise, inducing the production of electricity.  

In contrast, during ebb tide, the receding tidal waves create a vacuum within the chamber. As a result, the air inside moves downward, driving the turbine clockwise and generating electricity. The generated electricity can then be harvested and used.

(Word count: 150)

List of vocabulary used:

1. Diagram – a visual representation of information.
2. Meticulously – with great attention to detail.
3. Illustrates – explains or shows by example.
4. Complex – consisting of many different and connected parts; complicated.
5. Mechanisms – the processes or systems that perform a function.
6. Components – parts or elements that make up a whole.
7. Harnessing – capturing and using a resource.
8. Tidal wave – a large sea wave caused by the gravitational pull of the moon and sun.
9. Energy – the capacity to do work or produce change.
10. Production – the process of creating something.
11. Electricity – a form of energy resulting from the flow of electric charge.
12. Conduit – a channel for conveying water or other fluids.
13. Chamber – an enclosed space or compartment.
14. Column – a vertical structure that supports weight.
15. Turbine – a machine that converts fluid energy into mechanical energy.
16. Rotates – turns around an axis or center.
17. Clockwise – in the direction of the hands of a clock.
18. Inducing – causing or bringing about.
19. Ebb tide – the period when the tide is receding or falling.
20. Receding – moving back or away.
21. Vacuum – a space devoid of matter.
22. Driving – causing or forcing something to move.
23. Harvested – collected for use or consumption.
24. Generated – produced or created.

Do you need printed IELTS/ OET practice material? Place your order today. Available now for just Rs: 1,100 (including shipping all across India) Contact us at our WhatsApp number: +91 9886926773 to place your order. (Free for LTC students)