The Last Word - New Scientist offers simple answers to everyday physics questions such as why tin foil hurts teeth and why remote control locks won't work in some parking lots. - http://www.newscientist.com/lastword.ns
Ask a Student Scientist - Interactive question posting with answers from a student scientist. - http://www.omsi.edu/teachers/intelisef/QandA/index.cfm
Science Quiz Activities and Games - Collection of interactive quizzes for students in grades 5-9. - http://www.syvum.com/squizzes/science/
BJ Pinchbeck Offers Science Homework Help - Organized collection of links to help students find the information they need. - http://school.discovery.com/homeworkhelp/bjpinchbeck/bjscience.html
ScienceBob.com - Enter the world of Science Bob to try home experiments, visit his online lab, and get answers to general science questions. - http://www.sciencebob.com/
8th Grade Integrated Science Sci-Ber Text - Offers tutorials that allow children to explore topics such as matter, energy, forces, machines, and the Earth. Includes pictures, fun activities, experiments, and movies. - http://www.usoe.k12.ut.us/curr/science/sciber00/8th/8thintro.htm
Basic Science for Kids - Contains science projects and experiments for kids, along with detailed answers to science questions and unit conversions. - http://www.sciencemadesimple.com/