The shaking that follows an earthquake
Aftershocks
The point underground where the earthquake originates
Focus
This allows buildings to move independantly from the ground during an earthquake.
Base isolation
a long crack in the surface of the earth where earthquakes usually occur.
Fault Line
foreshock
The point directly ABOVE where an earthquake originiates
Focus
When the building sways, this type of earthquake proofing swings in the opposite direction to stabilize it.
Pendulum
The tool used to measure earthquakes.
Siesmograph
The biggest shock in an earthquake.
the mainquake
Divergent
This material should not be used for earthquake resistant buildings because it is not flexibly.
Stone
The scale used to measure earthquakes
Ritcher Scale
Before an earthquake, this is building up between tectonic plates
Pressure
shallow focus
this reinforces building structures in which diagonal supports intersect.
Cross bracing