Band 5+: The diagrams show the structure of a solar panel and its use. Write a report for a university, lecturer describing the information shown below. Summarize the information by selecting and reporting the main features, and make comparisons where relevant. You should write at least 150 words.

The process of electricity production with the help of sunlight has been shown by diagrams. Three stages are involved in the overall production of power.

In the first step, a square box is taken with one side completely open and two holes are provided on either ends of the box. One is at the left hand side, at the upper end and another is at the right hand side, at the lower end.Through this holes 2 pipes are inserted for inlet and outlet of some material. A transparent membrane is cut exactly of the same dimensions as the box and it is placed over it.

In the second step, the whole setup is placed under the sun and cool air is initiated to enter the box through the inlet and warm air out of the outlet. The trapped air gets heated by the sunlight.

In the third step, the same setup is repeated and a water pipe is added this time. It enters through the inlet and makes it exit through the outlet. Similarly in this case cool water gets in, absorbs the heat and gets out as warm water.