Good science fair ideas?

Question

ok im in 7th grade gifted classes and i need a good science fair idea so please help come up with some so i can get a good grade please! thank you all! =D

Answer 1

In China they are doing a lot of work to design wind powered generators. The key element in the new technology is 'mag-lev' bearings which support vertical turbine blades. They look sort of like a lamp shade made out of vertical blinds. The whole generator is suspended above a friction-free magnetic bearing. It makes electricity with a very small amount of wind. Have you noticed the solar panels which power some traffic lights? Those are pretty expensive. The new mag lev turbines are so efficient and cheap that they are thinking about putting small wind turbines along the highway to power a wide array of lights at night powered by the wind from cars going past.

So can you design a mag lev bearing and demonstrate a useful application? Ceramic magnets are strong, cheap and easy to get. Figuring out the self-balancing aspect will be a major accomplishment.

:-D Good luck!

Answer 2

Well for my PJAS (Pennsylvania Junior Academy of Science) project I tested the difference between 2% milk, skim milk, and 1% milk --- My hypothesis was that the milk that contains the most water will make cereal (regular corn flakes) soggy the fastest. It was easy & I got a first place.

Answer 3

Chromatography. I did this for my sixth grade science fair. I compared the pigments in permanent markers to see if any of them were the same. It is also an easy experiment to do. I conducted it within the time of about an hour. Also, I came in second place the chemistry category of the fair.  

Answer 4

last year i filled party ballonns ( one with plain water and one with water and ajax) to see which one would break first. i got 2nd place

Answer 5

you can test the effects of red LED light on the regeneration rate of planarian (or planaria?) worms. i was in gifted too and i got 1st place in my 8th grade science fair