1. Solar power
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2. First … Do exercise 1 on the worksheet: label the diagram.
2. Talk in your group and discuss how solar power generates electricity.

3. Next
3. Look at the following picture slides and check your answers to exercise 1.

4. A solar panel is made of special cells, which have two layers.

5. One of these layers has far more electrons than the other.

6. When sunlight hits the cells the electrons become excited.

7. and start to jump over to the layer with more electrons

8. and it can be harnessed to power anything from calculators to cars.

9. Now … Do exercise 2 on the worksheet: complete the gaps.
5. Do exercise 3 on the worksheet: write the number of the correct sentence next to each picture.

10. Presentation (for classes working in groups only)
6. Give an oral commentary on the picture slides.