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Questions 31-40
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 energyElectricity can be generated using offshore or onshore systemsOnshore 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 conversionUses a difference in temperature between the surface and lower levels
Water brought to the surface in a pipe
Notes
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