see how string length affects overall spin time
you can show how static electricity can move a tin can like a Pepsi can
forgin
For a science fair project you can do estimating solar energy potential of a house using solar lights
I was searching for the same thing and came accross this along with this page and I thought I'd answer: http://www.super-science-fair-projects.com/science-fair-projects-with-signal-lights.html I hope it is helpful.
Relate it to physics or science.
egg expiriment
One great science fair project involving chemistry for 8th grade is how to create salt flats.
One cool project is what chemical reaction does mentos and coke make after mixing them!
you can show how static electricity can move a tin can like a Pepsi can
test plants with different light sources
go on google and type in science fair projects its that simple
Science projects
science buddies,free science fair projects, or just google it
Nose it all.
=== ===
A fair with the emphasis on scientific projects.
There are many science ideas to be found online. Sites such as Science Buddies, Kidz World, Cool Science Projects, and even Brown University feature dozens of science fair ideas for multiple abilities and grade levels.