science fair help!?

Question

my brother is in desperate need of a science fair topic...
its more like a research topic and not one of those "build a volcano or rocket" type of thing...
its a sophomore level project so any idea will be fine (complex ones involving the use of labs and such is fine too)

Answer 1

ok... here is a good one.

Some cereals promote the fact that they have more iron.

Use a Null-hypothesis "different brands of cereal will not have differing levels of iron"

Now, prove it wrong.

Remember, it is easier to prove a hypothesis wrong then it is to prove it right.
That's why i prefer working with null hypothesis.

You will need:

different brands of crushed up cereal (special k, total, etc...), strong magnet, some zip lock bags and a digital balance.

place the magnet in zip-lock bag and seal. Take 100 grams of 1 of the crushed cereals, place in another zip lock bag. place the sealed bag with magnet into bag with cereal and seal the cereal bag. (note, you may want to remove all air from magnet bag before sealing).
Crush the cereal even further for about 5 min (do not destroy the bag).
open bag and carefully pull out the magnet bag. Stuff will be stuck to it. position the bag over the scale and carefully open the bag and remove the magnet.
If you do this right. The iron (stuck to the side of the bag) will fall off and you can measure the amount of iron that was in 100 g of cereal.

Repeat with other brands of cereals.

Answer 2

i am also a sophomore student that will going to the science fair i will fight in the science quiz bee my only advise on your brother just review specially the genes,traits,chromosomes,and also the other topics about technology in the phil. and in other countries!!!!!just be confidence,relax,and trust on yourself!!!!!GOOD LUCK!!!

Answer 3

You might consider a weather-related topic.

http://www.stuffintheair.com/kids-science-projects.html

Here are a few suggestions.