Tidal
Tidal
Background information and initial pro/cons:
1. From the article ”Alternative Energy Sources” from the U*X*L Encyclopedia of Science accessed on Gale Student Resources In Context on the CY Library homepage:
The rise and fall of ocean tides contain enormous amounts of energy that can be captured to produce electricity. In order for tidal power to be effective, however, the difference in height between low and high tides needs to be at least 20 feet (6 meters), and there are only a few places in the world where this situation exists. A tidal station works like a hydropower dam, with its turbines spinning as the tide flows through them in the mouths of bays or estuaries (an arm of the sea at the lower end of a river), generating electricity. By the end of the twentieth century, tidal power plants were in operation in France, Russia, Canada, and China.
Ocean thermal energy uses the temperature difference between the warmer surface waters and the colder depths to produce electrical power.
2. Watch this video about wind energy from Learn360:
Waves of Discovery – Harnessing the Ocean’s Power
http://www.learn360.com/ShowVideo.aspx?ID=879449
3. Watch this video, South Korea Turns Green with Tidal Power Plant, from Worldfocus, 2010, accessed through Opposing Viewpoints on the CY Library Homepage.
Viewpoint Articles
Two articles from Wave and Tidal Power (2011),accessed on Opposing Viewpoints on the CY Library homepage:
Wave and Tidal Power Must Overcome Significant Challenges to Be Useful (password: oslis)
Wave Energy Is a Sound Alternative to Fossil Fuels (password: oslis)