Click on the link below for project ideas.
There are five types of Science Fair Projects. Below is a list from About.com
1.
Investigative
In this type of project you ask a question, construct a hypothesis, test your
hypothesis using an experiment and draw conclusions from your experiment.
2. Laboratory Demonstration
In this type of project you repeat an experiment and retest a hypothesis. These
experiments can be found in books, on the net or your science classroom.
3. Research and Poster
In this type of project you do extensive research on a topic, write a research
paper and do a visual of the main points of what you found in your research.
many times backboards are used to the visual part of this project.
4. Hobby or Collections
In this type of project you display a collection of objects or interesting
artifacts so that the viewer gets a sense of knowledge about your topic. It
involves library researcher but generally no hypothesis is formulated or tested.
Examples: Rock collections, Egyptian mummies.
5. Model Building
In this type of project you build a scaled model to illustrate a scientific
principle.
Examples: Shadow boxes of land formations, a model of the solar system.