You may use source material from the web (including Wikipedia), however you must write in your own words. Short quotes of less than 10 words must be in quotation marks and properly cited. Longer quotes (if necessary) must be indented as a separate paragraph with offset margins wider than your normal text. Such quotes must also be properly cited. Any idea not your own must be cited as well, even if it is not a direct quote. Including figures and/or diagrams is a good idea, but they must be explained in the text. Include a summary-critique of your sources at the end. Was the physics presented correct and understandable?