DESCRIBING MOVEMENT
A java applet called The Moving Man looks at distance, velocity and acceleration time graphs.
ELECTROMAGNETIC SPECTRUM
OSCILLATIONS AND WAVES
Try the virtual ripple tank on this site.
EVOLUTION OF THE UNIVERSE
Wikipaedia, as always, contains lots of information. Try Big Bang.
IDEAL GAS MOLECULES
An excellent applet showing how moving molecules lead to the gas laws.
COMMUNICATION SYSTEMS
EARTH'S LAYERED STRUCTURE
An excellent simulation showing seismic waves passing through the Earth.
REVISION GUIDE FOR SUMMER EXAMINATIONS
See attachment at the bottom of the page.