A good first step to read. This set of recommendations or advice comes from the California State Science Fair Committee. Read carefully the first three paragraphs and the "Students are advised" paragraph.

Here is a monumental list of ideas for science fair projects and experiments, organized alphabetically. Every one of them is a link to a full page, with pictures, of information about the idea. This site is a goldmine.

What does it take to launch a satellite to explore Mars, or a mission to the moon? This project has several possible variations for exploring the physics of rockets. This is rocket science.

Examples of the effect of bending stresses on flexible rods could include a large tree bending over to the ground, or a fishing pole bending till it snaps. Scientists actually study this phenomenon and discover ways to prevent breakage,...

Here's a fun project that combines baseball and math. Major League baseball is played in ballparks that have their own individual quirks when it comes to the exact layout of the field. Fenway Park in Boston has the famous "Green Monster"...

Describes what is involved in holding an invention convention, a type of science fair, at school.

Your questions answered about environmental restoration after chemical accidents. A large section is dedicated to oil spills and how they contaminate the earth. Great information.

Following the title, "Unwrapping the Pillars" this site examines the image containing the pillars of the Eagle Nebula and the reason for their existence. The text is fairly brief but it does provide a basis for understanding the pillars...

In the midst of the Great Depression, Chicago managed to put on an incredible World's Fair, complete with Hall of Science, Transportation Building, and Enchanted Island.

Essay on the shifting tide and changing attitudes brought about by social science during the Progressive Era with an increased emphasis on social welfare, race relations, and fair labor practices in an industrial age.