Science fair ideas?!

I need help picking a science project that I should do
im in the 8th gradee! and it has to be in one of these categories.

Motion
Force
Density and Buoyancy
Chemistry
Acid and Base
Astronomy

thank you

maybe something about wind...
I dont know!

I smell chicken. LOL

Set up a slideshow on your computer about Astronomy and stick it onto a USB to bring into school.

Hope this helps,

x

this might be a little advanced and dangerous, but it would probably net you a win or runner up- get some HCL (dilute, so you dont get seriously burned) and a piece of limestone. pour the hcl on the limestone and watch it dissolve. write the formula on a presentation board behind it 2HCL+CaCO3 -- H20 + CaCl2 + CO2 this means that the HCL (hydrochloric acid) dissolves the limestone into water, carbon dioxide and calcium chloride. you can get limestone from a local quarry or even from a landscaping service or maybe even off the ground. just make sure a responsible adult handles the acid, it will burn you

go to this website:
http://www.all-science-fair-projects.com/

hope I helped.