Chapter 18

1. Chapter 18 Finish Monday, Test Tues/Wed

2. Section 1 Renewable Energy Today Chapter 18 Passive Solar Heating

3. Section 1 Renewable Energy Today Chapter 18 Active Solar Heating

5. Stirling Solar System25 Kilowatt generator$250,000world’s most efficientuses hydrogen to run a small turbine

6. Section 1 Renewable Energy Today Chapter 18 Photovoltaic Cells Sunlight falls on a semiconductor, causing it to release electrons. The electrons flow through a circuit that is complete when another semiconductor in the solar cell absorbs electrons and passes them on to the first semiconductor.

9. Section 1 Renewable Energy Today Chapter 18 Wind Farms • The cost of wind power has been steadily falling as wind turbines have become more efficient.

10. Section 1 Renewable Energy Today Chapter 18 Biomass—Power from Living Things

12. Bio-fuels • Methane (manure, land fills, etc) • Biodiesel • Alcohol from corn grain • Alcohol from sugar cane • Alcohol from cellulose (corn stover or switchgrass) • “Cellulosic ethanol”

13. Section 1 Renewable Energy Today Chapter 18 Hydroelectricity—Power from Moving Water

14. Hydropower Advances • In-stream • low pressure • micro-hydropower.

16. Section 1 Renewable Energy Today Chapter 18 Geothermal Energy—Power from the Earth

18. Section 1 Renewable Energy Today Chapter 18 Geothermal Heat Pumps: Energy for Homes

20. Section 2 Alternative Energy and Conservation Chapter 18 Tidal Power

21. Section 2 Alternative Energy and Conservation Chapter 18 Ocean Thermal Energy Conservation

22. Section 2 Alternative Energy and Conservation Chapter 18 Fuel Cells

23. Fuel Cells can run on natural gas • Or any other hydrogen rich fuel, including gasoline. • Bloom Box delivers electricity (60 Minutes) • A power plant converts chemical energy to thermal energy to mechanical energy to electrical energy. Then loses energy to scrubbers and transmission. • A fuel cell leaves out the middle two steps, no pollution and can be set up in your back yard.

24. Section 2 Alternative Energy and Conservation Chapter 18 Energy Efficiency • Most of our devices are fairly inefficient. More than 40 percent of all commercial energy used in the United States is wasted. • Increasing efficiency may involve sacrifices or investments in new technology.

25. Section 2 Alternative Energy and Conservation Chapter 18 Cogeneration • production of two useful forms of energy from the same fuel source. • For example, the waste heat from an industrial furnace can power a steam turbine that produces electricity. • Small cogeneration systems have been used for years to supply heat and electricity to multiple buildings at specific sites.

26. Section 2 Alternative Energy and Conservation Chapter 18 Hybrid Cars

27. Section 2 Alternative Energy and Conservation Chapter 18 Conservation Around the Home

28. Name______________hr___ 1. Concept Review 20 2. Concept Map 20 3. Video – Modern Marvels R.E. 15 4. Notes 15 5. Video – Nova, Saved by the Sun 10 6. Energy Problems 20 TOTAL 100 Chapter 18 Notebook

29. Name______________hr___ 1. Concept Review 20 2. Concept Map 20 3. Video – Modern Marvels R.E. 15 4. Notes 15 5. Video – Nova, Saved by the Sun 10 6. Energy Problems 20 TOTAL 100 Chapter 18 Notebook

30. Name______________hr___ 1. Concept Review 20 2. Concept Map 20 3. Video – Modern Marvels R.E. 15 4. Notes 15 5. Video – Nova, Saved by the Sun 10 6. Energy Problems 20 TOTAL 100 Chapter 18 Notebook

31. Name______________hr___ 1. Concept Review 20 2. Concept Map 20 3. Video – Modern Marvels R.E. 15 4. Notes 15 5. Video – Nova, Saved by the Sun 10 6. Energy Problems 20 TOTAL 100 Chapter 18 Notebook

32. Spring Science Nights • March 31st – Westwood View • April 14th – Fiske (KCK) • April 18th – Highlands