Miscellaneous
What scale is used to determine the energy of a seismic event?
Richter Scale
Hanging Wall
What are the three distinct types of plate boundaries?
-- Divergent -- Convergent -- Transform
What do you get from seismographs?
Seismograms
What does seismic wave data tell us?
Distance to the earthquake
hours, days, or years
Foot Wall
What way does transform plate boundaries go?
Towards each other
Seismographs
instruments that detect and record earthquakes
Travels through the Earth's interior and provide useful information about the earthquake
Body Wave
An earthquake is related to the amount of energy released during a seismic event
magnitude
Strike
What is a Fault Creep?
Structures that straddle a fault such as buildings and bridges that can be sheared by these forces
What do three seismic recording stations triangulate to?
Epicenter
S-Wave
Move the material in a direction that is normal to the direction of wave travel
The vibration of the earth produced by an abrupt release of energy
Earthquake
Dip
The angle of inclination of the surface of the fault measured from a horizontal plane
Define the difference between foreshocks and aftershocks?
May precede a major earthquake by hours, days, or years. These foreshocks are actively investigated as a means of predicting major earthquakes Aftershocks are generally weaker but may destroy buildings damaged during the main shock
What does the seismographs look like after movement of the earth?
ZigZag
Surface Waves
Move along the surface of the Earth; Most destructive
The location and name of where there is are tectonic plates and volcanos
The Ring of Fire; Pacific Ocean
Fracture in the crust on which there has been appreciable displacement
Fault
Where is one of the largest faults in the United States?
San Andres: Strike-Slip Faults
The study of earthquakes
Seismology
Compress and extend material in the direction of wave travel
P-Wave