What is a winning 7th grade Science fair project?

Question

science fair is april 18th and i need help finding a topic... it needs to be smart and middle-high school level...

Answer 1

You don't have much time but if you live in an area that has greenhouse plants available, you could buy several 4 packs or 6packs and test variable conditions: full sun, partial sun, no sun; Miracle Gro, some, lots, none; transplanting in backyard soil, potting mix or, if available, various soils: sand, clay, etc. Just make sure all the plants look the same when you buy them and take lots of pictures at one week intervals. You could also try various waters. High mineral content tap water, artesian water, filtered water.
In fact, why don't you just do a chemical analysis of your local water supply? There are labs that do this and, if you asked, I'm sure they would be very helpful.