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Science: Renewable Energy Sources
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Avg score: 64% • Most missed: “Between 1800 and 1970, the world shifted from dependence on _______ fuels to ___…”
Science: Renewable Energy Sources
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25 Questions

1. Advantage of hydropower: Dams have long __________, large untapped potential

2. Passive and active solar systems: Building ________ facing structures with energy efficient windows that allow sunlight to enter building- super _____________

3. Hydrogen Fuel Cell steps: 1) Takes in ___________ gas 2) Separates the hydrogen atoms' ________from their _________. 3) The ___________flow through wires to provide ______________. 4) __________ pass through a membrane combined with oxygen gas to form ___________.

4. Solar Updraft Tower: Greenhouse effects heat the air ________________, pushing it faster and faster toward the chimney (by ___________) where ____________ converted the air flow to _______________.

5. Worlds leading renewable energy source

6. Wind power: Worlds __________fastest growing energy industry

7. Disadvantage of wind power generation: 1) Need steady _______ 2) Need _________ power 3) Complaint- ______________________ 4) Impacts to _________________

8. _____% of us commercial energy production comes from non-renewables

9. Wind power supplies between ___ and ___% of worlds electricity needs- expanding rapidly

10. Disadvantages of hydrogen: 1) ______ net energy yield 2) High __________ 3) Extremely ________

11. Disadvantage of hydropower: Disruption of ____________ aquatic systems

12. Hydropower is inexpensive - Once Under Construction -Producing the dam is _______________

13. Solar Updraft Tower: -It is a ___,______ acre, transparent circular skirt. -As it rises, the air accelerates to ____km/h, driving _____ wind turbines inside the tower- generate electricity for ____,_______ homes.

14. Biomass fuels are a __________sources of energy, however they produce tremendous amounts of greenhouse gas __________ pollution

15. •The average energy density for hydrogen gas is ___x that of gasoline

16. First wind farm produced in:

17. Disadvantages of solar cells:

18. _____% of worlds commercially energy comes from renewable energy sources like hydropower, solar, wild, and biomass fuels (Only ___% in the US)

19. Hydrogen is an incredibly _________________ gas

20. Hydrogen gas is ______ molecules of __________________ connected together

21. When you burn hydrogen gas, it combines with ___________ gas in the atmosphere to produce _________________

22. Agua Caliente plant in Arizona: In operation since 2000 and is the world's _____________ solar-cell power plant. It produces enough electricity to power ___,________ homes.

23. Disadvantage of hydropower: Large land disturbance and ________of people -

24. _____% of world commercial energy production worldwide comes from mineral fuels

25. Micro-hydropower: Generate electricity for __________ consumption with mininmal impact to _________.

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