A topic that you do not understand. Or an uncomfortable topic that your judges wouldn't want to here.
structures
Decomposition, energy, light, electricity, and photosynthesis are all good science fair topics
Evolutionary Psychology
electricity, chemical compounds and acid
there are lots of topics! you can find a few at science buddies.com there are lots more websites where you can find out!
how many drops of water can a penny hold? topic: crazy penny........
There are many great science fair topics for someone in high school. Many would consider physics to be the most fascinating of the sciences, and it has generated a lot of interest in recent years due to the Large Hadron Collider and the Higgs Boson, both of which would make excellent topics.
Basic peg board circuitry; baking soda volcanoes.
no their isn't so stop looking trust me ive triedd
science project tools
a volcano<3
In the library (there are books that cover these), online, or at stores that specialize in educational materials. Don't forget teachers!!!