PBS
Pbs Teachers: Hot Air Balloon Experiment
Explore how heat affects the density of air by building and flying a hot air balloon using large plastic bags and the hot air from an electric hairdryer.
University of Oregon
Welcome to the Pressure Chamber
This site has an online experiment for testing the ideal gas law.
Energy4Me
Energy4me: Exploring Oil Seeps
How does oil seep naturally from beneath layers of rock to the surface of the ocean?