activity
amplitude
cloud
concept
crack
crust
damage
depth
disaster
displacement
earth
earthquake
energy
epicenter
fault
focus
geological
hypocenter
illustration
magnitude
mantle
mercalli
nature
observatory
plates
quake
richter
risk
rupture
scale
seismic
seismicity
seismism
seismometer
shaking
shifting
tag
tectonic
temblor
tremble
tremor
tsunami
violent
wave
wavelength
word