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e-Journal

Energy From the Sea (p. 413)


Step 1. Questions

You've heard of energy from coal, oil, natural gas, and even from the Sun through solar energy. But did you know that we can get energy from the ocean, too?

Write a report about ocean energy and how it is harnessed. To do so, you will research tidal and wave energy. Here are some questions to guide your research:
  • What is the difference between tidal energy and wave energy?
  • How is ocean energy harnessed?
  • What are some advantages and disadvantages of ocean energy?
  • How do "tidal barrages" work?
Are you ready? Begin by visiting the Web sites listed in Step 2. Look for answers to the questions above, and write down what you learn in the note-taking boxes.

You may use search engines to research other Web sites. Or research ocean energy at the library. When you are ready, follow Steps 3 and 4 to write your report.


Step 2. Research

Research answers for the questions you were asked in Step 1. Visit these Web sites. Take notes about them on this page, too!


Toolbox Tip: Click here to learn how to print a Web page.


Ocean Energy
Learn all about tidal and wave energy, and the differences between them, at this Web site hosted by the U.S. Government's Energy Information Administration. You'll read about tidal barrages, fences, and turbines, which are all devices used to harness the power of the ocean.
Take Notes:



Tidal Power
Read all about tidal barrages, which are huge dams that harness the energy of ocean water. Be sure to take a look at the section on advantages and disadvantages of tidal power. This Web site was created by a science teacher in England.
Take Notes:



Wave Energy Systems
This Web page has some great photos of devices used to convert ocean wave power into usable energy. Look at the photos and try to figure out how the devices work. This Web page comes from the Research Institute for Sustainable Energy in Australia.
Take Notes:



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