I need some suggestions for a science fair project. My son is in the fifth grade, so I need to keep it on that level. I'm not into science that much, so I would appreciate any help.
I did one that I hought was cool when I was young.
The smokeing machineWhat you need
1. a round clear plastic shampoo bottle
2. the cap to a bic pen
3. cotton balls
4. cigarrettes
It shows the effects of smoling on the lings and what all gets deposited in the body. The cotton balls act as the lungs inside the shampoo bottle and turn a nasty shade of brown due to the tar and nicotine that comes out of the cigarrette.
If you want to know how to build the machine just pm me and I will walk you thrpugh how it works. It's really easy.