Ever wonder whether a “green” refrigerator could be built to run on internal electromagnetism instead of electric current from an external source? Or whether Twitter feeds can be used to track the spread of disease? How about whether silicone can be used to visualize Young’s famous double-slit experiment? You can explore these ideas and much more in the Cedarcrest High School commons area Saturday, Feb. 25, when the science faculty presents its fifth annual Science and Engineering Fair.

The fair marks the culmination of a five-month process during which students gained first-hand experience in applying the scientific method to an area of interest. Students selected topics in mid-September, and after conducting thorough literature reviews, they presented research or project proposals to their peers and science instructors in early November. Proposals for inquiry projects consisted of a research question and rationale, a testable hypothesis, and a clear methodology for testing it. Proposals for non-inquiry projects consisted of an engineering, mathematical, or other goal and a method to reach it. Upon receiving approval, students were free to begin collecting data or otherwise develop their projects.

Completed projects consist of a paper in which the entire research and/or development process is documented, a detailed and dated record of everything that was done for the project, and an eye-catching display.

Students will set up their projects Friday afternoon, and judging will be done Saturday morning. Judges will review the projects alone at 8 a.m., and begin interviews with the students at 11 a.m. The public can view the projects at 2 p.m., and awards will be presented at about 2:45 p.m.

Selected projects may advance to the Central Sound Regional Science and Engineering Fair on March 10 at Bellevue College, and to the Washington State Science and Engineering Fair in Bremerton March 30 to 31.