The diagrams below show the design for a wave-energy machine and its location. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The two pictures illustrate the design

for

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of

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a wave-energy device and its position.

Overall

, the machine includes three main parts which are an electricity generator, turbines and chambers. Whether its location on the ocean may depend on the budget of manufacturers. As can be seen in the sketch, there are two chambers. The one in the air has two turbines that spin when there is

airstream

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an airstream

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going in and out. The other has an entrance for

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the wave

a wave

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wave

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waves

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to go inside. When the water level in the lower chamber changes

according to

wave direction, it can create

air

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an air

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current in the upper chamber that makes turbines spin and generates energy. If the machine is placed near the coast, there are normally small waves that mostly provide low output.

In contrast

, high output tends to be available offshore. The farther from

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the land

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land

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,land

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the device is set, the higher the installation expenditure is.