2. Team ATeam B Final round (1 point for each correct answer) Question 1Question 2Question 3Question 4Question 5 Question 6Question 7Question 8Question 9Question 10 Question 11Question 12Question 13Question 14Question 15 Question 16Question 17Question 18Question 19Question 20

3. Question 1 What orbiting, man-made objects in space are powered with solar energy? A. Shuttle B. Satellites C. Space station D. Comets

4. Question 2 What is main advantage of fossil fuels over solar power right now? A. It's cheaper B. It's cleaner C. It's renewable D. None of the above

5. Question 3 Photovoltaics convert solar energy into thermal energy True or False?False

6. Question 4 The photovoltaic array includes some hundreds of photovoltaic cells True or False?False

7. Question 5 Which outer space object will ruin solar energy use and will die eventually? A. Mars B. Sun C. Black hole D. Meteor

8. Question 6 Fossil fuel is sunlight stored millions and millions of years ago. True or False?False

9. Question 7 A solar panel produces DC power — an inverter converts it to AC. True or False?False

10. Question 8 Most solar cells are about 60 percent efficient at converting sunlight into electricity. True or False?False

11. Question 9 What is one of the disadvantages of the use of solar energy? A. It cannot work on a sunny day B. It is a non-renewable resource C. It doesn't work at night/cloudy day D. It doesn't work at all

12. Question 10 Net-metering laws and feed-in tariffs are both policies that help homeowners get paid more for the electricity their solar panels produce. True or False?False

13. Question 11 Solar PV panels produce: A. Heat B. Water C. Electricity D. Photo Voltage

14. (Q12) A standalone system A standalone system is designed to be independent of the gird. The surplus electricity generated during the day is fed into storage batteries. The system should be designed so that enough energy is collected during the day to supply the energy needed for the evening. A backup generator is an extremely good idea for such a system, to supply power in periods of very high demand or extended cloudy weather/winter months. Where overall performance is the focus of a grid connect system, in a standalone system daily energy generation to meet your needs is critical.

15. Question 12 A backup generator is needed for a standalone system: True or False?False

16. Question 13 Solar thermal panels can heat: A. Swimming pools B. Hot water for indoor plumbing C. Hot tubs D. All of the above

17. Question 14 A typical size for a residential solar- electric system is between 2,000 and 5,000 watts. True or False?False

18. The new breed of solar technology is thin-film solar panels. Thin film is less bulky than crystalline silicon, and increasingly cheaper to produce. Thin-film solar energy systems currently have a lower photovoltaic efficiency than crystalline silicon – converting around 8% of radiation exposure – however the conductibility is expected to sharply rise as current research improves the method. Thin-film solar panels work in the same photovoltaic manner as crystalline silicon modules, without the bulky wafers and glass paneling. Amorphous silicon is a material used in some thin-film flexible solar panels, which can be mounded to essentially any surface such as roofs or walls. (Q15) Thin film solar panels

19. Question 15 What are the main advantages of thin-film solar panels nowadays? A. they are very efficient B. they are less bulky than crystalline silicon C. they are flexible and cheap D. both b and c

20. Question 16 Solar cells can be made from plastic. True or False?False

21. Question 17 Scientists discovered “the photovoltaic effect”— the concept that light could produce electric current — in 1939. True or False?False

22. A solar cell, or photovoltaic cell (PV), is a device that converts light into electric current using the photoelectric effect. Solar cells produce direct current (DC) power which fluctuates with the sunlight's intensity. For practical use this usually requires conversion to certain desired voltages or alternating current (AC), through the use of inverters. Multiple solar cells are connected inside modules. Modules are wired together to form arrays, then tied to an inverter, which produces power at the desired voltage, and for AC, the desired frequency/phase. (Q18) SOLAR CELLS

23. Question 18 Multiple solar cells are connected inside: A. arrays B. modules C. inverters D. none of the above

24. (Q19) Grid connect system A grid connect system works like this- during the day, solar panels produce electricity, supplying all of your energy needs. All surplus energy is fed back into the grid, for which your energy provider pays you. This is commonly known as a Feed in Tariff. During the evening, the grid supplies your household’s energy needs. In this manner households can greatly reduce their energy bills, sometimes even turning a profit when the energy they feed to the grid exceeds the energy they take from it.

25. Question 19 A grid connect system can help households reduce their energy bills: True or False?False

26. (Q20) SOLAR PANELS A solar panel is a packaged, connected assembly of photovoltaic cells. The solar panel can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. A solar panel is a packaged, connected assembly of photovoltaic cells. The solar panel can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. Because a single solar panel can produce only a limited amount of power, most installations contain multiple panels.

27. Question 20 A single solar panel is contained in most installations: True or False?False

29. Wrong answer !!!

30. Right answer !!!