Phases of the moon

http://www.harcourtschool.com/activity/moon_phases/

Lunar cycle challenge-calendar

http://www.sciencenetlinks.com/interactives/moon/moon_challenge/moon_challenge.html

 Astronomy

http://ology.amnh.org/astronomy/index.htm

Earth

http://ology.amnh.org/earth/index.html

Earthquakes

http://news.bbc.co.uk/1/hi/sci/tech/4126809.stm

 http://www.thetech.org/exhibits/online/quakes/

Hurricanes

http://news.bbc.co.uk/2/hi/science/nature/4588149.stm

 Volcanoes

http://www.scholastic.com/play/prevolcano.htm

 Weather Whiz Kids

http://www.weatherwizkids.com/

Weather

http://www.edheads.org/activities/weather/index.htm

 Water Cycle

http://www.epa.gov/safewater/kids/flash/flash_watercycle.html

 Earth Interactives

http://www.tki.org.nz/r/wick_ed/science/interactives.php

 Planet Pop up

http://www.scholastic.com/play/prePlanet.htm

Outer Space quiz Game

http://www.prongo.com/space/index.html

 Rivers

http://www.urbanext.uiuc.edu/rivers/index.html

 Earth Quiz Game

http://www.prongo.com/quizgame/index.html

 Biomes of the world

http://mbgnet.mobot.org/sets/index.htm