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Mr. Harpe

Earth Science

Elasitic Rebound Theory This theory, the rocks on each side of a fault move slowly
Seismic Waves When rocks along a fault release engery in form of vibrations
Aftershocks Smaller tremors
Focus Area along a fault where slippage first occurs
Epicenter Point on earth's surface directly above the focus
Pacific Ring of Fire This ring includes west coasts of North and South America, east coast of Asia, and the western Pacific islands of the Philipean, Indonesia, New Guinea, and New Zealand
Fault Zones Some plate boundaries there are groups of interconnected faults
Seismograph Seismic waves can be recorded by using this instrument
P Waves (Primary) These waves move the fastest and are the first waves to be recorded
S Waves (Secondary) These waves can only travel through solid material
L Waves (Long waves) These are the slowest moving waves and travel slowly over the earth's surface
Richter Scale Expresses the magnitude of an earthquake
Microquakes These type of quakes have a magnitude of less than 2.5
Mercalli Scale Expresses the intensity of an earthquake and amount of damage it causes
Tsunami A large earthquake with an epicenter on the ocean floor can sometimes cause a giant wave
Seismic Gaps A place where the fault is locked and unable to move
Created by: Kelly Eaton