Something you're interested in and think other people would be interested in. Having judged science fairs, I know that I'm always more impressed by projects where it's clear the student actually studied something (particularly if it was really research, i.e. the results weren't necessarily a foregone conclusion) instead of just assembling a paint-by-numbers project from a book. Some general ideas: * Measure the level of X in different samples of Y * Build a working model of Q (NOT from a kit!) * See what effect various levels of W have on Z What do the letters stand for? Whatever you're interested in (and can find a method for; you might be interested in knowing how much Mercury is in tuna, but if you can't find a method you can actually perform for determining this, it wouldn't be a very good project).
One is which materials carry sound waves the best.
Your school website is a good website to find a science fair project. Science programs for kids typically have websites with projects listed. PBS has a website for kids that includes science projects.
google.com or science fair projects.com
Decomposition, energy, light, electricity, and photosynthesis are all good science fair topics
tomatoes and cucumbers
There are plenty of great 8th grade science fair projects. You could play with something like air concepts for example.
For a science fair project you can do estimating solar energy potential of a house using solar lights
go to the site Google.com and ask good science fair projects
A good and popular science project is nothing that yo ugly self can do !!
go on google and type in science fair projects its that simple
The grade is up to how diligent you are. Below are some sites that have lots of science fair projects.
Volcanos, and why coca cola explodes when you put mints in it
Science projects