Some cool pages to check out! These may help you with your research :)
http://www.youtube.com/spacelab?feature=etp-gs-space(cool space experiments kids have done)
http://kids.nineplanets.org/title.htm explore the planets
http://kids.yahoo.com/directory/Science-and-Nature
http://htwins.net/scale2/ (What's the smallest/biggest thing in the universe? zoom in and out to see- Thanks Mr Young! This website is sooo cool!)
http://www.madsci.org/
http://quest.nasa.gov/
http://www.newscientist.com/section/space
http://www.pbs.org/wgbh/nova/sciencenow/
http://www.omsi.edu/for-kids
http://www.soest.hawaii.edu/GG/ASK/askanerd.html -geology
http://kids.yahoo.com/science
http://science.pppst.com/space.html
http://www.bbc.co.uk/schools/ks2bitesize/science/
http://www.neok12.com/
http://www.kidsastronomy.com/
If you want to watch documentaries on your topic- ask your parents first- these links below have really amazing documentaries- but might be too difficult for some of you to understand.
Astronomy: http://topdocumentaryfilms.com/search/?results=astronomy
Entomology: http://topdocumentaryfilms.com/search/?results=bugs
Geology: http://topdocumentaryfilms.com/search/?results=geology