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Earthquakes - Coggle Diagram
Earthquakes
Faults
Fracture between 2 plates
Where the earthquake usually occurs
Types of faults
Normal fault
Hanging wall moves down relative to the foot wall
Results to extension
Reverse fault
Hanging wall moves up relative to the foot wall
Results to shortening
Strike-slip fault
vertical fracture
Left strike-slip fault and right strike slip fault
Line where plates touch
Types of earthquakes
Volcanic
Earthquakes caused by magma beneath volcanoes
Tectonic
Earthquakes caused by the sudden movement of rocks from faults and edges of the plates
Anatomy of an earthquake
Focus/hypocenter
The exact location of where the earthquake
starts
Epicenter
Directly above the focus
Where the earthquake is best felt
Magnitude
measures earthquakes using instruments
Richter Scale
Created by Charles Richter
Seismograph/Seismometer
Detects seismic waves
Moment Magnitude Scale
Measure size of faults that break
Created in 1979
Intensity
Measures earthquakes based on the people that are affected and damages in the area
PEIS
PHIVOLCS Earthquake Intensity Scale
Shaking of the ground caused by the sudden movement of rocks from below
