JoinScience 101: What makes for a good science fair project?
One way to address this issue is to name a few questions that are not good for science fair projects. Why is the sky blue? Can plants survive without water? and What causes volcanoes? are examples of questions that aren’t so great. The reason they’re not so great is that scientists already know the answers to those questions. The purpose of a science fair, though, should be for students to answer a question, the answer to which cannot be found in a textbook.