IELTS-G 14 Listening test 1 section 4

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 m 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, 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

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 m 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, 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

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 m 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, 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

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 m 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, 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