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 how a

wave-energy

machine

works and where it can be located at an optional cost. It can be seen in the first diagram that the process of a

wave-energy

machine

generates electricity. In the first stage, the wave must have a direction towards the bottom of the device so it causes the level of the water to rise and the air in the bottom chamber could be pushed into the second floor of the

machine

. The airflow from the first stage lets the turbine spin and half of the air is pushed into the top chamber

while

the rest is back to the bottom one. In the following stage , the airflow from the previous process lets the windmill in the top chamber rotate and a new airflow will pull into the top area because of the changes in air pressure. In the end, the wind power is converted into electricity. Admittedly, the outputs of the

wave-energy

device

according to

the size of the wave that related to its location in the sea. And of course, the

wave-energy

machine

near the coast requires a low installation cost

while

that deep into the sea requires higher costs.