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Cyber-chess a chess instruction site

Geophysics Index

Plate Tectonics - history

Plate Tectonics - the cause of Earthquakes

Richter Scale

Sea-floor Spreading

Seismic waves

Structure of the Earth

Wegener

This is a link to an excellent site for budding geologists:

FEMA LOGO This is a link to an excellent US Government site that gives good advice on preparing and coping with Earthquakes.