Science Grade 8

Geology

Plate Tectonics - From Windows to the Universe. Contains several levels as well as Spanish.
Crustal Deformation Processes: Folding and Faulting
Earthforce -  From the Franklin Institute.
Earthquakes - You can view the plates as well as the different type of boundaries.
Fault Motion Animations from IRIS.
Animals and Earthquakes - Plus contains various other links.
Faults - types of faults 
How Stuff Works - Faults with some animation.
Siemens Science - Learning by doing
 
 
Marine Photobank  - The Marine Photobank, a program of SeaWeb, provides beautiful and powerful images of many things marine.  All of the imagery is available for free for non-commercial purposes and for media use.