Earthquakes and the Composition of Earth:
KInds of Seismic Waves
Richter Scale
USGS simulations
Cool Simulation of waves
10 biggest Tsunami's
Great Alaska Earthquake
Sumatrin Tsunami 2004
Animation of Sumatrin Earthquake
Earthquake Magnitude Comparison
Where is Mount Saint Helens?
This brave student captured the eruption of Mount Saint Helens
Mount Saint Helens Eruption
Iceland Eruption Disrupts Travel
The Most Terrible Volcanoes In The History of The Earth Comparison
How Did Hawaii Form?