WRITING TASK 1 You should spend about 20 minutes on this task. 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. You should write at least 150 words.

The two diagrams illustrate the instructions for a wave energy machine and its placement options near the sea.

Overall

, the diagrams describe the ways natural resources

such

as

air

and

water

can be converted into electricity and the possible installation options. There are two chambers in the machine; one stores

water

while

the other functions with

air

. At

first,

water

is collected from

waves

causing the

water

level inside that chamber to increase and releasing

air

flow

as a result

. Simultaneously,

air

also

travels inside the other chamber. Together, flows from both

air

and

water

force the turbine to spin and generate energy through the electricity generator.

Moreover

, the second diagram depicts the suitable area for the machines to be installed. There are two possible options; large output and low output. When the

waves

are larger, the machine should

also

produce a higher output of power in comparison to low

waves

.

However

, with more power comes more installation costs.

Therefore

,

although

low

waves

create less power, it is less expensive to install.