15. Using the internet 16. Flexible working 17. Booking holidays 18. Working overtime 19. Wearing trainers 20. Bringing food to work
Question 5 of 11
5. Question
Question 6 of 11
6. Question
Question 7 of 11
7. Question
Question 8 of 11
8. Question
Question 9 of 11
9. Question
Question 10 of 11
10. Question
Parts of the presentation
26. Historical background 27. Geographical factors 28. Past mistakes 29. Future risks 30. International implications
Question 11 of 11
11. Question
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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