(Parental supervision of students is essential for all sites.)
BBC - Science & Nature - Space
http://www.bbc.co.uk/science/space/
Comet Introduction
http://www.solarviews.com/eng/comet.htm
Meteoroids and Meteorites
http://www.solarviews.com/eng/meteor.htm
Exploring the Planets
http://www.nasm.si.edu/etp/
Solar System @ National Geographic
http://www.nationalgeographic.com/solarsystem/ax/low.html?2d
Views of the Solar System
http://www.solarviews.com/eng/homepage.htm
Planets - Zoom Astronomy
http://www.enchantedlearning.com/subjects/astronomy/planets/
The Planets
http://www.smplanet.com/planets/Planets10ua.html
Welcome to the Planets
http://pds.jpl.nasa.gov/planets/
The Nine Planets
http://www.exeter.ac.uk/Mirrors/nineplanets/
The Nine Planets Solar System Tour
http://www.nineplanets.org/
Earth Introduction
http://www.solarviews.com/eng/earth.htm
Jupiter Introduction
http://www.solarviews.com/eng/jupiter.htm
Mercury Introduction
http://www.solarviews.com/eng/mercury.htm
Neptune Introduction
http://www.solarviews.com/eng/neptune.htm
Pluto and Charon
http://www.solarviews.com/eng/pluto.htm
Saturn Introduction
http://www.solarviews.com/eng/saturn.htm
Uranus Introduction
http://www.solarviews.com/eng/uranus.htm
Venus Introduction
http://www.solarviews.com/eng/venus.htm
Sun
http://www.solarviews.com/eng/sun.htm
The Moon
http://www.solarviews.com/eng/moon.htm
Science information
http://www.sciencemaster.com
Jason Project
http://www.jason.org
Ranger Rick
http://www.nwf.org/kids/
Rainforest
Action Network for Kids
http://www.ran.org/kids_action/index.html
California
Earthquakes
http://www.exploratorium.edu/faultline/index.html
Volcanoes
http://www.learner.org/exhibits/volcanoes/
Volcano
Live - John Seach
http://www.volcanolive.com/contents.html
Dynamic Earth: Plate Tectonics and Volcanoes
http://www.mnh.si.edu/earth/text/4_0_0.html
Images of Volcanoes
http://volcano.und.edu/vwdocs/volc_images/volc_images.html
National Geographic - Volcanoes
http://www.nationalgeographic.com/eye/volcanoes/volintro.html