# Marine Renewable Energy (Ocean Energy)

IELTS Academic Listening - 10 questions - 10 minutes - Note completion

Source: Recording, questions and answer key from Cambridge IELTS 14, Test 1, Listening Part 4. © Cambridge University Press & Assessment. Used for educational practice. Explanations and evidence notes are written by Testmigo.

## The recording

8 minutes of audio. Practice it with the player on the page; the transcript is on the answers page.

## Questions

### Questions 31-40: Note completion

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 harm 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

[Practice online with a timer and instant marking](https://testmigo.com/ielts/listening/marine-renewable-energy-ocean-energy) - [Answers and explanations](https://testmigo.com/ielts/listening/marine-renewable-energy-ocean-energy/answers)