It depends on what you want to do. but i think it could be a good project just depend on what you are doing and see if you could do it or not.
TheAtomic bom, the stages it goes through
Using seed plants will be fine for my child.And she went to the science fair and won the prize.So it will be good if you use my idea.
A good science project for a 6th grader would be about magntism, like does the bigger the magnet mean the gravitational pull will increase if you try to pick up bigger things than that.
One great science fair project involving chemistry for 8th grade is how to create salt flats.
There are so many interesting ideas a 9th grader can do for a science fair project. One can do a project on whether gum helps you to concentrate, how carnivorous plants digest insects, or the effect of the overpopulation of guppies.
It depends on what the project is on.
What is the project on
For good ideas, i would suggest to browse the net for sites with such content. I have provided a link in the related links. It is from a e-newsletter subscribed to www.about.com.
this is a very good science project
Bubble gum science, project names
A good science project includes a well designed experiment or investigation, good data collection, clear analysis, and a well written conclusion. Take some time to plan what model you will build. Is it realistic you can build it in the time you have to complete the project? What will you measure and how will you measure it? Can you measure the watts the generator creates and how the power output changes if the water flow changes? What kind of graph will you use to visualize the data? Think through these questions before starting any science project, and you will be successful.
A project about what is the healthies drink in the world